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ICS281PG - 200 MHz Triple-PLL Clock Synthesizer | Renesas
ICS281PG

ICS281PG - 200 MHz Triple-PLL Clock Synthesizer | Renesas

Renesas Electronics ICS281PG is a field-programmable triple-PLL spread-spectrum clock synthesizer with a maximum output frequency of 200 MHz, one synthesizer circuit, CMOS outputs, and a 16-pin TSSOP package measuring 4.40 mm in width. It accepts either a clock or crystal reference input and provides a programmable input-to-output ratio of 1:3. A clock synthesizer generates stable timing signals from a lower-frequency reference and, in this case, uses three phase-locked loops to produce multiple high-frequency outputs. The PLL-based approach belongs to the clock and timing IC hierarchy, where frequency synthesis supports processor clocks, communications infrastructure, storage interfaces, and other digital systems requiring controlled clock distribution. The principal feature is the combination of triple-PLL architecture, field programmability, and spread-spectrum clock generation. Bypass operation gives the design team a way to move between the synthesized and reference-clock paths, while CMOS output signaling supports integration with compatible digital logic. The 200 MHz maximum frequency makes the device suitable for clock trees operating below that limit. The ICS281 family provides up to three clock outputs, including multiple reference clocks according to the manufacturer documentation. The 1:3 ratio identifies a supported clock-generation relationship, while field programming allows configuration through the device's programming interface. These features make the ICS281PG more versatile than a fixed-frequency oscillator for systems that require programmable timing and controlled spectral spreading. Typical applications include communications equipment, network interface clock trees, high-speed digital processing systems, storage controllers, and clock-generation blocks in industrial equipment. Spread-spectrum operation can reduce narrowband emissions, making the device useful when electromagnetic compatibility is important. Designers must still verify each output's frequency, jitter, duty-cycle, and modulation limits against the target system requirements. The principal design consideration is preserving clean, low-jitter reference distribution to every PLL. Use the recommended reference and loop-filter network from the manufacturer datasheet, keep clock traces short, and provide solid return paths beneath high-speed signals. Decoupling should be placed close to supply pins, while output buffering or additional clock drivers may be needed for fanout beyond the device's intended loading. This page consolidates the documented 200 MHz frequency capability, triple-PLL architecture, programming features, package data, sourcing guidance, and practical clock-tree considerations. It also distinguishes confirmed drop-in candidates from lower-confidence engineering options so that schematic and PCB decisions can be checked before production release.

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ICS290PG - 200MHz Triple PLL Clock Synthesizer | Renesas
ICS290PG

ICS290PG - 200MHz Triple PLL Clock Synthesizer | Renesas

Renesas Electronics ICS290PG is a field-programmable, triple-PLL spread-spectrum clock synthesizer with a maximum frequency of 200 MHz, CMOS outputs, and support for clock or crystal inputs. The device generates up to eight high-quality high-frequency clock outputs, including multiple reference clocks, and is packaged in a 20-pin TSSOP package identified as PGG20. Its programmable architecture makes it suitable for systems that require controlled clock generation, frequency synthesis, or spread-spectrum operation. A clock synthesizer is an integrated circuit that derives one or more stable timing signals from a reference clock or crystal. Clock and timing ICs sit within the broader timing-control hierarchy used by processors, communications equipment, storage systems, and test instrumentation. A PLL-based synthesizer can multiply, divide, or otherwise derive clock frequencies while providing programmable output arrangements and phase-related reference signals. The ICS290PG uses three PLL sections to produce multiple related outputs from a common reference source. Its operating input types are clock or crystal, while its output logic is CMOS. The stated input-to-output ratio reaches 1:8, and the maximum generated frequency is 200 MHz. Spread-spectrum capability can help redistribute clock energy across a frequency band, which is useful where controlled spectral spreading is desirable for system timing, interface, or electromagnetic-interference considerations. The PGG20 package offers 20 pins and an operating temperature range from -40 °C to +85 °C. The device is identified as lead-free and is supplied in a tube for the cataloged ordering configuration. Pin functions, programmable register details, reference-frequency limits, output configurations, jitter characteristics, supply-voltage range, and package dimensions must be confirmed in the manufacturer datasheet before a new board layout is released. Typical clock-tree applications include processor and controller timing, communications equipment, data-converter systems, storage controllers, and instrumentation. In a communications design, the ICS290PG can create a system clock and reference outputs from one source. In processor-based equipment, it can provide programmable frequencies while reducing the number of independent oscillators and associated distribution components. The main design consideration is validating the complete clock architecture. The reference input, PLL programming values, output enable sequence, trace topology, and downstream jitter requirements must be evaluated together. Short, controlled clock routes and proper return paths help preserve signal quality, while an output-termination strategy should follow the impedance of the PCB and the receiving device. This page combines verified device characteristics, application guidance, pin and package constraints, comparison fields, and replacement guidance. It is structured to help engineers identify whether the ICS290PG meets the required frequency, output-count, logic, temperature, and package conditions before committing a PCB footprint or production BOM.

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ICS291PG - 200MHz Triple-PLL Spread-Spectrum Clock | Renesas
ICS291PG

ICS291PG - 200MHz Triple-PLL Spread-Spectrum Clock | Renesas

The Renesas Electronics ICS291PG is a triple-PLL field-programmable spread-spectrum clock synthesizer with a maximum output frequency of 200 MHz, CMOS outputs, clock or crystal input, and PLL bypass capability. It is packaged in a 20-pin TSSOP package measuring 0.173 inches, or 4.40 mm, in width. The device generates up to six high-quality, high-frequency clock outputs and includes multiple reference-clock functions for clock-tree and interface designs. A spread-spectrum clock synthesizer is a clock-generation IC that varies clock timing over a programmed range to reduce peak electromagnetic emissions. This technique is useful in systems where reducing concentrated electromagnetic interference helps improve signal integrity and regulatory compliance. The ICS291PG is a clock/frequency synthesizer IC with one clock-generation circuit, PLL functionality with bypass, and an input that can be a clock or crystal. The ICS291PG is associated with clock generation, frequency synthesis, triple-PLL architecture, programmable spread spectrum, multiple output clocks, reference outputs, and CMOS interface support. Its maximum frequency is 200 MHz, and its listed output ratio range is 1 to 6. These characteristics make it relevant to communication equipment, storage systems, computing platforms, and other systems requiring multiple synchronized clocks from a common reference. The device uses a field-programmable configuration approach, allowing clock multiplication, division, spread-spectrum modulation, and output routing to be configured for a particular board requirement. The PLL-bypass path is important when a system needs to preserve a reference clock during startup, test, or mode transitions. Multiple outputs can reduce the need for separate clock-generation components while supporting reference and forwarded clock requirements. Typical implementation involves supplying a stable reference clock or crystal, configuring the internal PLL and output dividers, and routing each CMOS clock output to the relevant subsystem. Board-level design should account for trace impedance, return paths, clock jitter, output loading, and decoupling. Keep clock traces short where practical, provide continuous reference planes, and maintain a solid ground return beneath high-frequency clock routing. The ICS291PG is best suited to designs needing multiple clocks, programmable frequency relationships, or spread-spectrum clock generation within a compact surface-mount package. For a new design, verify the complete electrical limits, configuration method, pin-level signal names, and timing specifications in the current manufacturer datasheet before releasing production layouts.

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ICS308R - 200 MHz Quad PLL VersaClock | Integrated Device Technology
ICS308R

ICS308R - 200 MHz Quad PLL VersaClock | Integrated Device Technology

The Renesas Electronics ICS308R is a serially programmable quad-PLL VersaClock synthesizer with a 250 kHz to 200 MHz output-frequency range and support for up to six simultaneous output frequencies. It is packaged in a 20-pin SSOP surface-mount package and operates from a 3 V to 3.6 V supply. A PLL clock synthesizer, also called a frequency synthesizer, generates or distributes multiple clock signals from one or more reference inputs. The ICS308R belongs to the clock-generator and timing-control hierarchy, where accurate frequency generation is used to synchronize digital processors, communications links, converters, and test equipment. The principal verified features are four PLL functions, serial programmability, on-the-fly output reprogramming, and as many as six independent output frequencies. These characteristics make the device useful when a system needs flexible clock-tree generation rather than one fixed oscillator. The 200 MHz maximum output makes it suitable for high-speed digital timing domains, while the 250 kHz lower limit supports slower control and interface clocks. The ICS308R is identified as a clock or frequency synthesizer IC with one input-side reference arrangement and multiple programmable outputs. Its frequency generation is controlled through a serial programming interface, allowing the system to adjust operating frequencies as operating modes change. The exact output count, programming levels, reference frequency, jitter, and propagation characteristics are not present in the supplied search data and should be confirmed from the manufacturer datasheet before final design release. Typical applications include communications infrastructure, networking equipment, industrial automation, test and measurement systems, embedded processors, and mixed-signal products requiring several related clock domains. The SSOP-20 package supports conventional surface-mount assembly, but its narrow pitch requires careful PCB layout and reliable land-pattern construction. When designing around the ICS308R, preserve the specified power-supply range, connect decoupling capacitors near the supply pins, and validate every programming sequence against the manufacturer timing requirements. Output frequency accuracy and clock-jitter performance depend on the reference source, loop configuration, output loading, and board implementation; these values are not stated in the supplied excerpts and are marked for verification.

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ICS308RI - 200MHz Quad-PLL Clock Synthesizer | Renesas
ICS308RI

ICS308RI - 200MHz Quad-PLL Clock Synthesizer | Renesas

The Renesas Electronics ICS308RI is a serial-programmable quad-PLL VersaClock synthesizer with an output frequency range from 250 kHz to 200 MHz. It can generate six different output frequencies simultaneously and is housed in a 20-pin SSOP package measuring 3.90 mm wide. The device combines four phase-locked loops with serial configuration, allowing a host processor to program multiple related clocks within one integrated circuit. A PLL clock synthesizer is a clock-and-timing semiconductor that generates, divides, multiplies, and phases a reference clock to produce one or more stable output frequencies. The quad-PLL architecture expands this role into a multi-output clock-generation hub. In system terms, the ICS308RI belongs to the PLL synthesizer family, clock-generation ICs, clock-and-timing ICs, and the broader integrated-circuit and semiconductor hierarchy. The principal feature is simultaneous generation of up to six output frequencies across a 250 kHz to 200 MHz range. Serial programmability allows system designers to configure divider ratios and output relationships instead of relying on a fixed-frequency oscillator. This makes the ICS308RI useful when several clock domains require independent or related rates while sharing one reference source. Its four internal PLL channels provide more configuration flexibility than a basic single-output clock generator. The ICS308RI is specified as a clock/frequency synthesizer IC with a maximum frequency of 200 MHz. The manufacturer documentation identifies the device as a serial-programmable quad-PLL VersaClock synthesizer, which describes both its programming interface and its four-PLL architecture. Its 20-pin SSOP package supports surface-mount PCB assembly and preserves a relatively compact board footprint for multi-clock systems. Typical applications include communications equipment, networking infrastructure, industrial control systems, data-conversion equipment, and embedded systems that need several internally related clock outputs. A single reference clock can be multiplied and divided to support multiple converters, processors, or interface blocks. The ability to produce six frequencies simultaneously can simplify clock-tree design and reduce the number of separate synthesis devices required on a board. When integrating the ICS308RI, verify the reference-clock range, supply requirements, programming interface, output-drive characteristics, and output-frequency limits against the manufacturer datasheet before finalizing the PCB. Preserve short, controlled traces around the clock inputs and outputs, provide the required bypass capacitors, and account for output jitter when routing sensitive clock signals. This page organizes the ICS308RI core specifications, application guidance, pin-package information, and drop-in replacement information into a design-focused resource for engineers evaluating programmable clock-generation architectures.

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ICS308RT - 200MHz Quad PLL Clock Synthesizer | Renesas
ICS308RT

ICS308RT - 200MHz Quad PLL Clock Synthesizer | Renesas

Renesas Electronics ICS308RT is a serial-programmable quad-PLL VersaClock synthesizer capable of generating output frequencies from 250 kHz to 200 MHz and providing six different output frequencies simultaneously. The device combines four phase-locked loops with a serial programming interface, allowing a host controller to configure multiple clock outputs for a complex electronic system. It is positioned as a clock and timing IC within the broader clock-generator, frequency-synthesizer, PLL, and semiconductor hierarchy. A phase-locked loop, or PLL, is a feedback-controlled clock-generation circuit that compares an output signal with a reference and adjusts a controlled oscillator until the phase and frequency relationship is maintained. A multi-PLL clock synthesizer extends this principle by deriving several related or independent clock outputs from one programmed device. The ICS308RT therefore serves as a central timing component for systems requiring more clock domains than a single-output oscillator can economically provide. The principal feature of the ICS308RT is its six simultaneous outputs, each of which can be assigned a different frequency within the stated 250 kHz to 200 MHz operating range. This output count allows one synthesizer to support multiple domains such as processor clocks, communication interfaces, memory timing, converters, or signal-processing chains. Serial programmability also simplifies configuration by allowing the system controller to set the clock plan instead of relying on a large collection of discrete oscillators. The quad-PLL architecture provides the timing foundation for six independently usable output frequencies, while the wide 200 MHz upper limit accommodates high-speed digital, communications, and control systems. Its 250 kHz lower range supports low-frequency timing and divided-clock requirements. Because all outputs are derived from one programmable package, the synthesizer can simplify clock-tree organization compared with multiple discrete crystal oscillators and dividers. Typical applications include FPGA and processor clock trees, industrial control systems, communications equipment, audio and video processing, instrumentation, and multi-clock test systems. It is particularly useful when several buses or subsystems require synchronized clocks with different output rates. The six-output architecture can reduce component count and centralize clock configuration, although the final design must account for output jitter, reference quality, supply requirements, and channel-specific frequency limits. When laying out a circuit using the ICS308RT, begin with the manufacturer pin-description and layout guidance in the datasheet. Preserve short, controlled-length clock routes, provide the required reference and decoupling connections, and validate every output frequency against the relevant PLL and output limits. Configuration should be tested with the intended reference clock because programming values, loop behavior, and board-level clock integrity determine the final frequency accuracy and phase-noise performance. This page combines the device architecture, frequency capability, application guidance, package considerations, and verified cross-reference information in a form that supports component selection and engineering review. It also distinguishes documented operating facts from parameters that require confirmation from the full manufacturer datasheet before a production layout or replacement is approved.

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ICS309R - 200MHz Triple-PLL Clock Synthesizer | Renesas
ICS309R

ICS309R - 200MHz Triple-PLL Clock Synthesizer | Renesas

The Renesas Electronics ICS309R is a serially programmable triple-PLL spread-spectrum VersaClock synthesizer with a maximum output frequency of 200 MHz, supplied in a 20-pin SSOP package. Its verified electrical attributes include LVCMOS outputs, clock or crystal inputs, PLL bypass capability, a 1:9 input-to-output ratio, and a 3.0 V to 3.6 V supply range. A clock synthesizer generates or distributes one or more related clock signals for digital systems. This ICS309R belongs to the PLL-based clock generator hierarchy: it compares a reference clock with an internal phase-locked loop and then divides or multiplies that reference to produce programmable outputs. Spread-spectrum clocking reduces the concentration of clock energy at one frequency, while serial programming permits controlled configuration by an embedded controller. The strongest verified features of ICS309R are its triple-PLL architecture, serial programmability, spread-spectrum operation, 200 MHz maximum frequency, LVCMOS output type, and support for both clock and crystal reference sources. The bypass function can be useful when a system must pass through or test a clock source without normal PLL operation. The 20-pin surface-mount SSOP supports compact clock-generation layouts. The supplied snippets do not disclose the complete PLL configuration ranges, individual output-channel assignments, jitter specifications, serial interface levels, or output-drive details. Engineers should therefore treat ICS309R as a 200 MHz-class, 3.3 V clock synthesizer and verify every timing and signal-integrity requirement against the manufacturer datasheet before releasing a new design. Some retrieved summaries appear to mix ICS309R with the closely related ICS308, so this distinction is important. Typical uses include processor and controller clock generation, communications equipment, storage systems, test and measurement instruments, and embedded systems that require programmable frequency generation or spread-spectrum clocking. In each case, the reference clock, target output frequency, loop filter, serial programming sequence, and downstream load must be validated together. PCB implementation should preserve short, controlled-impedance clock paths and provide clean return paths beneath the device. Keep programming signals away from sensitive clock nets, observe all bypass-capacitor recommendations in the datasheet, and confirm output rise and fall times at the actual receiver. Do not infer pin function or output assignment from the family-level product description alone. This page consolidates the verified distributor and datasheet-index information available for ICS309R, separates confirmed facts from missing data, and provides replacement, selection, and design guidance that is not presented as a manufacturer datasheet replacement.

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ICS309RI - 200 MHz Triple-PLL Spread-Spectrum Clock | Renesas
ICS309RI

ICS309RI - 200 MHz Triple-PLL Spread-Spectrum Clock | Renesas

The Renesas ICS309RI is a serial-programmable triple-PLL spread-spectrum clock synthesizer with a maximum operating frequency of 200 MHz, LVCMOS outputs, and clock or crystal input support. It is packaged in a QSOP-20 package and is designed for systems that require programmable frequency generation, clock distribution, and spread-spectrum clocking. The ICS309RI includes PLL bypass functionality and supports input-to-output multiplication ratios described in the device documentation. A programmable clock synthesizer is used to generate one or more stable digital clock outputs from a reference clock or crystal. By dividing or multiplying the reference frequency through internal phase-locked loops, the circuit allows system designers to reconcile multiple clock domains and reduce clock-related electromagnetic interference. Spread-spectrum operation further changes the emitted clock frequency over time, reducing narrowband emissions and improving compatibility with sensitive downstream equipment. The ICS309RI uses serial programming to configure its clock-generation functions, allowing a host controller to set operating parameters during initialization. The presence of LVCMOS outputs makes it suitable for digital logic requiring conventional single-ended clock signaling. Its maximum frequency of 200 MHz provides ample headroom for communications, networking, storage, embedded computing, and industrial control systems that distribute clocks to processors, transceivers, and peripheral controllers. The triple-PLL architecture is useful when one reference source must support several related output frequencies. PLL bypass allows the device to pass through a clock when a direct path is appropriate, helping designers simplify control sequences and support different operating modes. The QSOP-20 package supports compact surface-mount construction while providing the pin count needed for programming, reference, and clock outputs. When designing around the ICS309RI, begin with the manufacturer pin-description and application-information sections to assign programming pins, reference inputs, and outputs correctly. Confirm the selected reference frequency, output ratio, output enable sequence, and bypass state in software before enabling downstream clocks. Keep clock traces short, provide continuous return paths, and account for output-enable timing when multiple loads must start in a defined sequence. This product page combines the device’s documented architectural features with practical guidance for clock-tree integration, programming, and EMI-conscious implementation. It is intended to help engineers distinguish the ICS309RI from ordinary fixed-frequency clock generators and to evaluate whether its programmable triple-PLL architecture matches the requirements of a new board design.

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ICS309RT - 200MHz Triple-PLL Clock Synthesizer | Renesas
ICS309RT

ICS309RT - 200MHz Triple-PLL Clock Synthesizer | Renesas

Renesas Electronics ICS309RT is a serially programmable triple-PLL spread-spectrum clock synthesizer with a maximum output frequency of 200 MHz, supplied in a 20-pin SSOP surface-mount package. The device accepts a clock or crystal input, provides LVCMOS outputs, supports PLL bypass, and can produce up to six different output frequencies simultaneously. Its specified operating supply range is 3 V to 3.6 V. A clock synthesizer is an integrated timing device that generates or distributes multiple related clock frequencies from a common reference. It belongs to the clock and timing IC hierarchy, where PLLs multiply and divide a reference frequency to establish programmable output clocks. The ICS309 combines that function with serial programming and spread-spectrum clock generation, allowing system designers to control frequency relationships and reduce clock-related electromagnetic interference without redesigning the PCB. The principal feature of ICS309RT is its triple-PLL architecture. According to the manufacturer device description, ICS309RT can generate any output frequency from 250 kHz to 200 MHz and supports up to six simultaneous output frequencies. This range permits one timing device to replace multiple separate oscillators or dividers in communications, storage, computing, and test systems. Serial programmability also simplifies configuration and supports applications where several clocks must be coordinated under software control. The ICS309RT supports both clock and crystal inputs. This allows it to operate from an externally generated reference or from a crystal oscillator arrangement when an independent frequency reference is required. Its PLL bypass feature provides a path for evaluating clock behavior without modulation, while its spread-spectrum capability is intended to spread clock energy across a frequency band and reduce peak electromagnetic emissions. LVCMOS output signaling is suitable for common digital clocking environments operating from the device's 3 V to 3.6 V supply range. Typical uses include processor and peripheral clock distribution, data-conversion clocking, communications equipment, storage controllers, networking hardware, and embedded systems that require several frequency outputs. The six-output capability is especially useful when a design needs related clocks for a controller, serial interface, memory, and data converter without allocating a separate oscillator to each load. The primary design consideration is configuration and output planning. Engineers should use the manufacturer datasheet's pin-description, register, and application tables to confirm every pin function, programming sequence, output format, and reference-clock requirement before layout. Because the clock-generation architecture includes PLL and spread-spectrum functions, signal routing, grounding, and output loading should follow the manufacturer's recommended reference layout rather than relying on general-purpose clocking assumptions. This product page consolidates the verified frequency, PLL, I/O, supply, and package characteristics into an engineering-focused reference. It also distinguishes verified device functions from parameters that still require confirmation from the complete manufacturer datasheet, helping designers plan replacements and PCB reuse without assuming unsupported compatibility.

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ICS341MP - 200MHz Spread Spectrum Clock Synth | Renesas
ICS341MP

ICS341MP - 200MHz Spread Spectrum Clock Synth | Renesas

The Renesas Electronics ICS341MP is a low-cost, single-output, field-programmable clock synthesizer with a maximum output frequency of 200 MHz and an LVCMOS output in an 8-pin SOIC package. It accepts a clock or crystal input, contains one PLL, and supports programmable output frequencies from 250 kHz to 200 MHz at a 1:1 input-to-output ratio. A field-programmable clock synthesizer is a clock-and-timing IC that generates a stable digital clock from an external reference. The ICS341 belongs to the broader PLL-based frequency synthesizer hierarchy, where the PLL multiplies or divides a reference frequency to create a programmable operating clock. Clock-and-timing ICs support digital systems requiring deterministic frequency generation, clock distribution, or reduced electromagnetic interference. The ICS341MP supports spread-spectrum clock generation to reduce system EMI by distributing clock energy over a range of frequencies. Its maximum frequency is 200 MHz, while its minimum programmable output is 250 kHz. A single LVCMOS output simplifies clock routing, and the integrated PLL allows the device to operate from a clock or crystal reference. These characteristics suit designs that need adjustable timing without a complex multi-output clock architecture. The ICS341MP is implemented in an 8-SOIC surface-mount package measuring 3.90 mm in body width. This package provides a practical upgrade over larger through-hole clock devices while remaining compatible with conventional PCB assembly. Its single-circuit architecture also keeps the signal path manageable, although applications requiring multiple independently programmable outputs would need a more capable clock generator. Typical uses include EMI-sensitive embedded systems, communications equipment, consumer electronics, and digital processing platforms where a programmable reference is useful. Spread-spectrum operation can help reduce narrowband emissions in systems that must meet internal or regulatory EMC goals. The 200 MHz ceiling supports common processor, interface, and control-clock requirements, while the 250 kHz lower limit accommodates lower-rate digital buses and control logic. Designers should verify the reference-input configuration, programmed frequency range, output enable behavior, and external crystal or clock requirements against the manufacturer datasheet before layout. Keep the reference and output paths short, provide the required decoupling capacitors close to the device, and confirm that the selected spread-spectrum range satisfies both timing margins and system EMC objectives. This page organizes the ICS341MP specifications, sourcing information, design guidance, and qualified drop-in options into one engineering-focused reference. It supports faster part selection while emphasizing the need to validate programming, reference, and EMC details against the manufacturer datasheet.

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ICS342MP - 200MHz Dual-Output Clock Synthesizer | Renesas
ICS342MP

ICS342MP - 200MHz Dual-Output Clock Synthesizer | Renesas

Renesas Electronics ICS342MP is a field-programmable, dual-output clock synthesizer with a maximum output frequency of 200 MHz, packaged in an 8-pin SOIC. The device accepts clock or crystal input and provides LVCMOS clock outputs through an integrated PLL architecture. Its specified 3.15 V to 3.45 V operating-supply range makes it suitable for low-voltage digital systems requiring locally generated, configurable timing signals. A clock synthesizer is a clock and timing IC that generates, divides, multiplies, or redistributes clock signals for digital logic. Clock generators and PLL-based synthesizers belong to the broader timing-control hierarchy that includes oscillators, clock buffers, dividers, and jitter-cleaning devices. Unlike a crystal oscillator, which primarily produces a fixed reference frequency, the ICS342MP uses programmable synthesis to produce multiple related output clocks and reduce the number of separate timing components in a system. The ICS342MP combines two configurable outputs with PLL support and a maximum frequency of 200 MHz. Its input section can operate from a clock or crystal, while its LVCMOS outputs are suited to digital logic that requires single-ended clock signals. The SOIC-8 surface-mount package also supports conventional PCB assembly and provides a compact option for communication, control, and embedded-system clock trees. Programmability allows the output frequencies to be selected through the device configuration interface instead of requiring a separate fixed-frequency oscillator for each clock domain. This can simplify board partitioning and provide a common timing reference for related circuits. The PLL architecture is useful when the system needs an output frequency derived from a common reference, although loop behavior, output jitter, and reference stability must be evaluated during clock-tree design. Typical uses include digital controller timing, industrial automation modules, embedded processor clock distribution, communications equipment, and general-purpose peripheral clocking. In these systems, two outputs can support related clock domains or distribute a master clock to two loads while keeping the design compact. The low-voltage supply requirement should be checked against the voltage and sequencing requirements of the logic being clocked. The main design consideration is preserving signal integrity between the synthesizer outputs and receiving logic. Keep clock traces short, provide a continuous ground reference, use appropriate termination when required, and observe the input and output timing limits in the manufacturer datasheet. Decoupling should be placed close to the supply pin, with the value and stability requirements taken directly from the recommended application circuit. This page consolidates the ICS342MP device identity, clock-synthesis specifications, package information, sourcing structure, and application-oriented design guidance. It also identifies the verified same-family replacement candidate and separates confirmed electrical attributes from parameters that require confirmation before schematic release or production qualification.

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ICS343MP - 200MHz Triple-Output Clock Synthesizer | Renesas
ICS343MP

ICS343MP - 200MHz Triple-Output Clock Synthesizer | Renesas

Renesas Electronics ICS343MP is a field-programmable, triple-output clock synthesizer based on the VersaClock architecture. It generates three independently programmable output clocks, reaches a maximum output frequency of 200 MHz, and accepts either a crystal or external clock input. The device is packaged in an 8-pin SOIC measuring 3.90 mm wide, making it suitable for compact communications, industrial control, test-and-measurement, and embedded timing systems. A clock synthesizer is a timing IC that accepts a reference frequency and uses one or more phase-locked loops to produce stable, independently configurable clock outputs. The ICS343 belongs to the clock generator and PLL hierarchy within the broader clock and timing IC category. Its three-output architecture can replace multiple discrete oscillators or divider networks when a board requires several related frequencies from one reference source. The ICS343MP provides three programmable outputs, PLL-based frequency synthesis, LVCMOS output signaling, and maximum frequency operation of 200 MHz. Separate output divide values from 2 through 20 allow the output clock banks to support widely different frequencies from the same reference. These features make the device useful where a system needs flexible clock partitioning without allocating a separate synthesizer for every rail. Its architecture supports low-cost field-programmable clock generation from a crystal or clock source. Independent output programming is particularly valuable in mixed-signal, communications, and data-conversion systems where the processor, serial interface, and peripheral blocks may not require the same frequency. The 8-SOIC package also offers a familiar surface-mount footprint for designs that must support external oscillators or frequency dividers. Typical applications include processor and interface clocking, communications modules, industrial automation equipment, test and measurement instrumentation, and embedded control systems. In each case, the synthesizer can centralize reference distribution while allowing output frequencies and divide ratios to be selected during configuration. The result is a smaller clock tree and potentially fewer discrete timing components. Designers should evaluate loop bandwidth, output jitter, supply requirements, and board-level noise using the manufacturer's application guidance before high-volume release. Reference-crystal layout, grounding, and output-routing practices are especially important in low-jitter systems. Because output-edge quality depends on the complete clock tree, PCB trace geometry and supply decoupling should be evaluated together with the programmed divider and PLL settings. This product page consolidates the device classification, functional characteristics, sourcing information, and engineering-oriented usage guidance. It also distinguishes the verified ICS343MP configuration from related suffix variants and identifies the limitations of the available replacement records, helping engineers make a more informed drop-in decision without treating broadly similar clock ICs as electrically interchangeable.

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ICS345RP - Triple PLL 200MHz Clock Synthesizer | Renesas
ICS345RP

ICS345RP - Triple PLL 200MHz Clock Synthesizer | Renesas

Renesas Electronics ICS345RP is a triple-PLL field-programmable clock synthesizer IC with a 200 MHz maximum clock frequency and up to nine high-quality, high-frequency clock outputs, including multiple reference clocks. The device is supplied in a 20-SSOP package with a 3.90 mm package width, making it suitable for compact embedded clock-generation designs where several independently derived clock signals are required. A field-programmable clock synthesizer is a clock and timing IC that uses one or more phase-locked loops to generate, divide, multiply, or otherwise derive multiple clock outputs from a reference source. In the broader semiconductor hierarchy, a PLL belongs to the clock and timing category and provides a flexible alternative to fitting separate oscillators and divider networks on a complex circuit board. The ICS345RP is positioned for systems that need multiple related clock domains while preserving a centralized programming and distribution architecture. The ICS345RP combines a triple-PLL architecture with field-programmable output generation. According to the Renesas datasheet result for the 345 family, the device can generate up to nine high-quality, high-frequency clock outputs and can derive those outputs from a low-frequency reference. The verified distributor listing identifies the ICS345RP as a clock/frequency synthesizer IC with a 200 MHz frequency rating and a single 20-SSOP configuration. This type of device is useful in communication equipment, industrial control systems, test and measurement instruments, embedded computing platforms, and other systems requiring multiple clocks with predictable relationships. A common design uses a stable reference source at the input and programmable divider, multiplier, and phase-alignment functions to create the required output frequencies. The central benefit is reduced component count and easier clock-tree management compared with several unrelated oscillator and divider combinations. When designing around the ICS345RP, confirm the reference frequency, target output frequencies, output-routing requirements, and permitted programming scheme against the manufacturer datasheet. The 20-SSOP footprint requires careful PCB layout, particularly around supply decoupling, clock output routing, and grounding. The package should not be replaced with a mechanically similar part unless its pinout, programming model, PLL performance, and output-routing behavior have been verified. This page summarizes the verified device identity, package, frequency, PLL, and output-count information while highlighting the practical clock-tree role of the ICS345RP. Detailed electrical limits, pin assignments, programming registers, and application-specific replacement decisions should be confirmed in the Renesas ICS345 documentation before schematic sign-off or PCB release.

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ICS348RP - 200MHz Quad-PLL Clock Synthesizer | Renesas
ICS348RP

ICS348RP - 200MHz Quad-PLL Clock Synthesizer | Renesas

The Renesas ICS348RP is a quad-PLL field-programmable VersaClock synthesizer that generates up to nine high-quality, high-frequency clock outputs from a crystal or external clock input. Its maximum clock frequency is 200 MHz, and the device provides LVCMOS clock outputs in a 20-pin QSOP/SSOP package. The ICS348RP belongs to the clock generator and frequency synthesizer family, combining phase-locked-loop frequency multiplication with programmable output generation. A clock generator is an integrated circuit that creates one or more timing references from a stable source. A frequency synthesizer extends this function by multiplying, dividing, or otherwise transforming a reference frequency. The ICS348RP places four PLLs and multiple output stages in one timing IC, allowing a system to distribute related reference and working clocks while avoiding a collection of separate oscillator and divider circuits. The ICS348RP supports a crystal or clock input, includes PLL bypass capability, and can produce as many as nine clock outputs. These characteristics make it useful where a board needs several coordinated frequencies for processors, memory, serial links, converters, or data-conversion equipment. Because the device is field programmable, system designers can configure output behavior rather than relying only on fixed factory frequencies. Its quad-PLL architecture provides the central mechanism for deriving multiple clock outputs from a common low-frequency reference. Maintaining a shared reference can simplify synchronization across subsystems and reduce the number of separate frequency-generation components. The bypass path is important during development because it provides a way to evaluate clock-source conditions without relying on every PLL operating at once. Typical applications include communications equipment, test and measurement instruments, industrial control systems, data-acquisition modules, and embedded computing platforms. The device is especially relevant when a design needs several related high-frequency outputs but has limited board space or wants to centralize clock generation in one programmable component. Layout should preserve short, controlled clock paths and place support components near their associated pins. Differential and high-speed routing requires careful return-path planning, while power and ground distribution should remain stable across the clock-generation domain. Designers should verify output frequency, jitter, phase relationship, and bypass behavior against the final system timing budget. This product page organizes the key clock-synthesis facts, package information, practical use cases, and engineering guidance for ICS348RP. It also highlights the distinction between electrical substitutes and package-only order-code variants so procurement and design teams can evaluate compatibility correctly before making an engineering change.

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ICS409M - 80MHz PC Peripheral Clock | Renesas Electronics
ICS409M

ICS409M - 80MHz PC Peripheral Clock | Renesas Electronics

The Renesas Electronics ICS409M is a PC peripheral clock synthesizer with PLL capability, crystal input, LVCMOS output, and a maximum frequency of 80 MHz. It is packaged in an 8-pin SOIC and is designed to reduce external component count in PC peripheral clocking systems. The supported output ratio is 1:3, while one synthesizer circuit provides a compact clock-generation solution for compatible legacy PC applications. A clock synthesizer is a clock and timing integrated circuit that derives one or more stable output signals from a reference source. Within the hierarchy of oscillator, phase-locked loop, clock generator, timing IC, and semiconductor, the ICS409M uses an on-chip crystal oscillator and PLL to support PC peripheral clock requirements. This category is important when a system needs a defined frequency that differs from the original crystal reference. Key verified features include PLL support, crystal input, LVCMOS output, one clock circuit, a 1:3 input-to-output ratio, and operation up to 80 MHz. The 8-pin SOIC package supports conventional surface-mount PCB assembly. Its integration can reduce the number of discrete oscillator and divider components required around a PC peripheral interface. The verified source material describes the ICS409M as a cost-effective clock synthesizer optimized for PC peripheral applications. The device accepts a common 14.31818 MHz crystal through its on-chip crystal oscillator and uses the PLL to establish the required output relationship. This reference arrangement is relevant to legacy PC interfaces whose clock trees were designed around the widely used 14.31818 MHz frequency. The LVCMOS output is suitable for digital clock distribution when voltage levels, timing margins, and load requirements are confirmed in the original system design. Typical uses include PC peripheral timing, interface clock generation, frequency multiplication, and replacement of discrete crystal-oscillator and divider networks. Because the available verified data does not provide complete electrical limits or timing tables, engineers should consult the manufacturer datasheet and system clock requirements before release to production. The primary design consideration is compatibility. Confirm the crystal frequency, target output frequency, output duty cycle, supply voltage, load capacitance, and PCB footprint before substitution. A nominal 80 MHz maximum rating does not establish that every downstream timing requirement is met; system-level rise-time, jitter, and setup-and-hold margins remain decisive. This page consolidates verified distributor and technical-source information, package and frequency details, sourcing links, and practical replacement guidance that is not presented as a single consolidated manufacturer datasheet.

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ICS409MT - 80MHz PC Peripheral Clock | Renesas Electronics
ICS409MT

ICS409MT - 80MHz PC Peripheral Clock | Renesas Electronics

Renesas Electronics ICS409MT is a clock and frequency synthesizer designed for PC peripheral applications. It uses an on-chip crystal oscillator with a 14.31818 MHz crystal input, provides one LVCMOS clock output, and supports output frequencies up to 80 MHz. The device is packaged in an 8-pin SOIC and operates across the 0°C to 70°C temperature range. Its 1:3 input-to-output ratio makes it suitable for systems that derive a higher-frequency operating clock from the common 14.31818 MHz reference used in PC architectures. A clock synthesizer is a timing IC that generates or distributes clock signals needed by digital logic. Clock generators and phase-locked loops sit within the clock and timing IC category, where they support processors, memory interfaces, communications equipment, and computer peripherals. By multiplying a stable reference frequency, the ICS409MT reduces the number of separate oscillators and distribution components required in a system while providing a defined LVCMOS interface for downstream circuitry. The principal features of the ICS409MT are its 80 MHz maximum output frequency, single LVCMOS output, single PLL, crystal input, and 1:3 input-to-output ratio. The 14.31818 MHz reference arrangement supports designs based on the traditional PC timing domain, while the on-chip oscillator eliminates the need for an external oscillator module. The 8-SOIC surface-mount package also supports compact, automated PCB assembly compared with larger through-hole clock packages. Technically, the ICS409MT is identified as a PLL-based clock and frequency synthesizer with one clock circuit. The oscillator and PLL establish the output timing relationship between the crystal reference and the LVCMOS clock output. The listed 1:3 ratio indicates that the output clock is three times the reference frequency, producing 42.95454 MHz when operated with a 14.31818 MHz crystal. Input and output polarity, PLL loop bandwidth, jitter, output duty-cycle limits, and detailed electrical timing values require confirmation from the manufacturer datasheet before final timing-budget work. Typical applications include PC peripheral clock generation, legacy computer interface cards, embedded systems that use a 14.31818 MHz reference, communication equipment, and digital subsystems requiring a locally generated LVCMOS clock. In these systems, the device can centralize clock multiplication and reduce oscillator-component count. Its 80 MHz ceiling provides useful headroom when the intended peripheral clock is 42.95454 MHz, while the single-output architecture suits designs that need one derived clock rather than several independently managed clocks. The primary design consideration is crystal and layout stability. Place the crystal, load capacitors, and ground path close to the device, and route high-current clock output away from sensitive analog and communication signals. Validate the resulting clock against the system’s frequency tolerance, jitter, rise-time, duty-cycle, and load requirements. Because the documented operating range is 0°C to 70°C, the part should not be assumed suitable for industrial temperature environments without additional qualification. This product record combines the device architecture, package information, operating limits, search-oriented technical questions, application guidance, and engineering-selection context. It also clearly separates confirmed characteristics from parameters that require datasheet confirmation, helping designers evaluate ICS409MT before committing it to a PC peripheral, legacy computing, or embedded clock-generation design.

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ICS411M - PC Peripheral Clock | IDT | SOIC-8
ICS411M

ICS411M - PC Peripheral Clock | IDT | SOIC-8

The Integrated Device Technology ICS411M is a cost-effective PC peripheral clock synthesizer in an 8-SOIC package. The verified product data identifies it specifically for PC motherboard and peripheral applications, but does not provide a manufacturer-hosted technical datasheet. The component is therefore best characterized by its stated clock-generator role, legacy origin, package format, and reported distributor inventory rather than unsupported frequency, voltage, or timing claims. It belongs to the clock and timing IC hierarchy, where oscillators and clock synthesizers distribute timing signals used to coordinate digital logic. Its purpose in a personal computer was to support multiple peripheral buses or subsystem clocks while reducing the number of separate clock components required on the motherboard. An integrated clock synthesizer combines oscillator circuitry, frequency generation or distribution, and output-driver functions into one timing IC. Such devices help maintain defined relationships between digital signals. In computer systems, those relationships determine when processors, buses, storage controllers, and peripherals may exchange data. The ICS411M is described as a PC peripheral clock and is intended to optimize component count in PC motherboard and peripheral designs. Its 8-SOIC package provides a compact, surface-mount form suitable for legacy motherboard assembly, although physical dimensions and pin functions require confirmation from an authentic technical datasheet. The available evidence establishes three important procurement facts: ICS411M was originally associated with IDT, Integrated Device Technology Inc; it is packaged as 8-SOIC, listed with a nominal width of 3.90 mm; and distributor listings report inventory. However, the verified data does not state operating voltage, output count, supported clock frequencies, frequency tolerance, jitter, operating temperature, or pin assignments. Those values must not be inferred from similarly named clock ICs. This limitation is especially important because clock generators with the same package can differ substantially in pinout and output behavior. ICS411M is relevant when researching or maintaining older PC peripheral platforms rather than designing a new clock subsystem from first principles. Verified distributor listings include references to octopart clock buffers and drivers, but these search results do not establish a technical replacement or lifecycle recommendation. Before substitution, an engineer should compare the authentic ICS411M pinout, supply voltage, output waveform, frequency plan, enable logic, and timing margins. Octopart and the listed distributors can assist with sourcing, but manufacturer documentation remains the controlling source for design decisions. A typical legacy motherboard application would place the ICS411M among the system timing circuitry and route its outputs according to the original platform schematics. Because exact output assignments are unavailable in the verified data, PCB reuse cannot be approved from the package alone. Clock routing should remain short, reference planes should return cleanly, and unused outputs require the treatment specified by the original platform design. Modern replacements should not be assumed to be pin compatible. The key engineering caution is documentation completeness. Verify the original manufacturer or archived manufacturer datasheet before energizing, probing, or substituting ICS411M in powered equipment. Confirm device markings, supply rails, oscillator connections, and every package pin. This page deliberately distinguishes verified product identity from unverified technical assumptions and provides sourcing links, practical assessment guidance, and transparent data gaps for repair, maintenance, and legacy-system evaluation.

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ICS411MT - 25MHz LVCMOS PC Clock Generator | Renesas
ICS411MT

ICS411MT - 25MHz LVCMOS PC Clock Generator | Renesas

The Renesas Electronics ICS411MT is a PC peripheral clock synthesizer with PLL-based clock generation, an input clock interface, and LVCMOS output. It supports operation up to 25 MHz and contains one clock circuit in an 8-pin SOIC package. The device was developed as a cost-effective solution for PC motherboard and peripheral clock-distribution requirements, providing a compact alternative to discrete oscillator, divider, and buffer combinations. A clock generator is a timing IC that converts an input reference into one or more stable clock signals for digital systems. Clock synthesizers sit within the clock and timing IC family, where phase-locked loops (PLLs) can multiply, divide, or otherwise condition a reference frequency. Within a computer platform, the resulting clock can synchronize bus activity, interface circuits, peripheral controllers, and other logic that must operate from a common timing reference. Key characteristics of the ICS411MT include its PLL capability, clock input, LVCMOS output, maximum operating frequency of 25 MHz, and single-circuit architecture. These features make the part relevant to legacy PC motherboard and peripheral clocking where a compact integrated solution is preferred over multiple discrete timing components. Its 8-pin SOIC package also supports conventional surface-mount assembly and automated PCB production. Technically, the ICS411MT combines reference-clock conditioning with PLL-based frequency generation. A PLL synchronizes an output phase to a reference signal while permitting frequency synthesis through internal loop control. This architecture is useful when the board must derive a required operating clock from an available reference while maintaining a defined relationship between input and output. The manufacturer datasheet is the controlling document for loop bandwidth, jitter, operating limits, pin functions, and electrical characteristics. Typical applications include PC motherboard clock generation, peripheral interface timing, clock distribution for legacy computer logic, and replacement of discrete oscillator-and-divider networks. The device can also serve systems in which one LVCMOS clock domain must be reproduced for multiple downstream circuits. Board designers should verify timing margins, output drive, supply requirements, and all enable or feedback connections against the manufacturer datasheet before production. The primary design consideration is to treat the clock as a high-speed signal even though its maximum frequency is only 25 MHz. Route the output with a short, controlled-impedance path, keep the reference and output returns connected to a common ground plane, and place decoupling capacitors close to the supply pins. Avoid unnecessary stubs and test-probe loops that can degrade edge quality or introduce reflections. This page consolidates the verified clock-generator specifications, package information, sourcing workflow, pinout status, and engineering guidance for ICS411MT evaluation. It also distinguishes documented functionality from parameters that must be confirmed in the manufacturer datasheet, helping engineers assess fit before committing to a PCB or production release.

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ICS501AM - 200MHz PLL Clock Generator | Renesas Electronics
ICS501AM

ICS501AM - 200MHz PLL Clock Generator | Renesas Electronics

The Renesas Electronics ICS501AM is a single PLL-based clock generator that produces a CMOS clock output at up to 200 MHz from a lower-frequency crystal or clock input. It uses a 1:1 input-to-output ratio, accepts either clock or crystal input, and is housed in an 8-pin SOIC package measuring 3.90 mm wide. The ICS501A LOCO series provides a practical clock multiplication solution when a system requires a higher-frequency operating clock without requiring a full custom oscillator or complex external frequency-generation network. A PLL clock generator is a timing IC that phase-locks its output to a reference source and multiplies the reference frequency to produce a stable, high-frequency clock. Within the broader semiconductor hierarchy, the ICS501AM belongs to the clock and timing IC family, specifically the clock-generator and PLL subcategory. Its role in electronic systems is to distribute a high-speed clock for digital logic, processors, communication equipment, and other clocked circuits while maintaining a defined relationship to the input reference. The primary features of the ICS501AM are its maximum output frequency of 200 MHz, single-clock-generator configuration, 1:1 input-to-output ratio, PLL architecture, and CMOS output. The ability to operate from either a crystal or external clock gives the device flexibility in clock-tree design. Its 8-SOIC surface-mount package also allows relatively compact PCB placement compared with larger through-hole oscillator arrangements. These characteristics make the part useful where frequency generation, standard logic voltage compatibility, and manageable board area are important. Technically, the ICS501AM uses a phase-locked loop to generate a higher-quality clock output from a lower-frequency reference. The PLL-based approach provides a controlled relationship between the input reference and generated output, while the CMOS output supports integration with conventional digital timing circuits. The 1:1 ratio identifies the device as a clock-generation solution rather than a programmable integer or fractional-N frequency synthesizer. Exact input frequency limits, operating-voltage range, output jitter, and load-drive capability should be confirmed in the manufacturer datasheet before final circuit release. Typical applications include digital control systems, embedded processing platforms, communication modules, industrial control equipment, and general-purpose clock-distribution designs. In each case, the part can serve as the central clock source when a higher-frequency CMOS clock is required and a crystal or lower-frequency reference is already present. The absence of differential inputs or outputs also simplifies point-to-point clock routing, although signal-integrity and return-path design remain important at high clock rates. When laying out a design using the ICS501AM, keep the crystal, reference clock, feedback network, and decoupling paths consistent with the manufacturer reference configuration. Confirm all capacitance, drive-strength, and grounding requirements before fabrication because incorrect peripheral-component values or long loop lengths can affect PLL stability and clock quality. Validate startup, jitter, and output amplitude across temperature and supply-voltage corners rather than relying only on nominal simulation results. This product page combines the ICS501AM clock-generator specifications, verified package information, compatible same-family ordering options, and practical integration guidance. It provides engineers with a concise basis for initial design selection while directing detailed timing, electrical-limit, and qualification decisions to the Renesas manufacturer documentation.

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ICS501G - 160MHz PLL Clock Generator | Renesas | Timing
ICS501G

ICS501G - 160MHz PLL Clock Generator | Renesas | Timing

The Renesas Electronics ICS501G is a single-circuit PLL clock generator with a maximum frequency of 160MHz, CMOS output, and support for crystal or external clock inputs. It is available in 8-TSSOP and 8-MSOP packages, making it suitable for compact digital systems that require frequency multiplication or clock generation. The verified distributor listing identifies the device as an 8-pin surface-mount clock-generator IC. A PLL-based clock generator multiplies or conditions a lower-frequency reference to produce a stable, high-frequency clock for digital logic, processors, communications equipment, and embedded systems. The ICS501G belongs to the broader clock and timing hierarchy: oscillator and crystal support → clock generator → PLL clock multiplier → digital timing subsystem. Its CMOS output and 160MHz maximum frequency suit moderate-speed digital clocking requirements, although timing margins must be checked for the selected operating condition. Key verified attributes include PLL operation, one clock-generator circuit, a 1:1 input-to-output ratio in the cited specification summary, and no differential input or output. The available package information is 8-TSSOP or 8-MSOP, depending on the orderable package variant represented by the ICS501G family listing. The exact electrical limits, crystal-load details, output-drive capability, jitter, and recommended decoupling requirements were not supplied in the verified excerpts and must be confirmed in the manufacturer datasheet before layout release. Typical uses include microcontroller and processor clock generation, digital interface timing, embedded control systems, and communications modules requiring a local high-frequency reference. The device is intended to replace conventional crystal-oscillator arrangements in suitable electronic systems, according to the Renesas product description. Designers should account for supply voltage, output load, trace impedance, grounding, and the timing relationship between the generated clock and downstream circuitry. A key design consideration is to validate the reference clock and PLL configuration against the exact datasheet before production. Keep the oscillator and feedback paths short, provide a clean return path, and place required decoupling capacitors close to the supply pins. Because the verified data does not state the full pinout, pin names, or package-specific ordering details, those values remain subject to datasheet verification. This page consolidates verified distributor specifications, official Renesas datasheet information, application guidance, and drop-in replacement constraints into an engineering-focused component record for sourcing and design review.

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ICS501GI - 140MHz PLL Clock Generator | Renesas Electronics
ICS501GI

ICS501GI - 140MHz PLL Clock Generator | Renesas Electronics

Renesas Electronics ICS501GI is a PLL clock-generator integrated circuit that produces a high-quality clock output from a lower-frequency crystal or external clock input. The device supports operation up to 140 MHz, uses a CMOS output, and is packaged as an 8-TSSOP or 8-MSOP with a stated width of 0.118 inches, or 3.00 mm. It is intended for systems that require a stable, high-frequency clock without implementing a complete clock-generation subsystem on the host board. A PLL clock generator is a timing IC that multiplies or otherwise conditions a reference clock to produce one or more higher-frequency outputs. Clock generators belong to the broader clock and timing IC hierarchy, where they work alongside oscillators, dividers, buffers, phase-locked loops, and frequency synthesizers. Their primary function is to convert a convenient low-frequency crystal reference into the clock domain required by processors, communication circuits, converters, and digital peripherals. The ICS501GI uses a phase-locked loop, allowing an external clock or crystal to serve as the reference while the internal multiplier generates a higher-frequency CMOS clock. Its maximum listed operating frequency is 140 MHz. The device contains one clock-generation circuit and has a listed input-to-output ratio of 1:1 in the referenced specification summary. These characteristics make it suitable for designs requiring a compact, single-channel clock source rather than a programmable multi-output synthesizer. Renesas markets the ICS501 family under the LOCO name, describing it as a cost-effective method for generating a high-quality, high-frequency clock from a lower-frequency crystal or clock input. The CMOS output interface suits digital systems operating with CMOS-compatible logic levels. Because this ICS501GI variant is offered in a compact 8-pin TSSOP/MSOP package, it can support space-conscious boards while retaining separate connections for power, ground, reference input, and clock output. Typical uses include digital control systems, embedded processing modules, communications equipment, clock distribution for digital logic, and clock generation where a system already has a suitable reference crystal or external clock. The PLL-based approach can reduce the need for high-frequency external crystals while providing a clock output up to 140 MHz. System designers must still confirm loop stability, output jitter, startup behavior, load capacitance, and supply requirements against the manufacturer datasheet before releasing a production design. Layout should keep the reference-crystal or clock-input path short and route the high-speed CMOS output away from sensitive analog and communication nodes. Follow the manufacturer’s recommended input, output, and bypass-capacitor connections, and account for the required ground-return path under the exposed or connected ground pins. If frequency accuracy, jitter, or reference sensitivity is critical, evaluate the complete clock tree rather than relying only on the 140 MHz maximum-frequency headline figure. This page combines the Renesas family identification, distributor package details, PLL and frequency specifications, pin-compatible cross-reference findings, and practical selection guidance. It also distinguishes verified drop-in candidates from generic cross-reference tools, helping engineers focus on same-package replacements that still require datasheet-level timing and application validation.

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ICS501GT - 160MHz PLL Clock Generator | Renesas Electronics
ICS501GT

ICS501GT - 160MHz PLL Clock Generator | Renesas Electronics

Renesas Electronics ICS501GT is a single-circuit PLL clock generator IC with a maximum operating frequency of 160 MHz, accepting either a crystal or clock input and providing a CMOS clock output. The device is offered in an 8-TSSOP, also identified as an 8-MSOP measuring 0.118 inch by 3.00 mm wide. Its 1:1 input-to-output ratio and integrated PLL make it suitable for replacing multiple discrete crystal-oscillator functions with one clock-generation component. A clock generator IC is a timing semiconductor that converts a lower-frequency crystal or external clock into a stable, high-frequency clock required by digital systems. Clock generators occupy the Clock & Timing category and may include oscillator, PLL, frequency multiplier, divider, and buffer functions. The ICS501GT uses phase-locked-loop technology to multiply a reference frequency while providing a CMOS output suitable for digital logic and communications equipment. Principal features include a maximum frequency of 160 MHz, one internal clock-generating circuit, support for crystal or clock inputs, and CMOS output. The 1:1 ratio indicates that the nominal output follows the selected reference relationship without an integer multiplication factor other than the internally programmed PLL ratio. The single-circuit architecture simplifies designs that require only one principal clock domain and reduces the number of separate oscillator packages and interconnections. The ICS501GT is identified as a LOCO-family device, with LOCO standing for Low Cost Oscillator. Its PLL-based approach is intended to produce a high-quality, high-frequency clock from a lower-frequency crystal or clock source. The resulting CMOS output can serve digital processors, programmable logic, interface controllers, and other clocked subsystems, provided that the reference frequency, operating voltage, output loading, and timing requirements are checked against the device specifications. Typical applications include communications and networking modules, industrial control equipment, consumer electronics, embedded digital systems, and FPGA or microcontroller clock trees. In these systems, the part can centralize clock generation, reduce crystal-oscillator component count, and provide a consistent clock source to multiple sequential logic domains. The exact frequency plan must remain within the 160 MHz maximum and comply with the PLL multiplication and timing limits defined by the manufacturer datasheet. The primary design consideration is confirming the complete pin configuration and reference requirements before layout. Crystal load capacitance, grounding, output termination, supply decoupling, and unused-pin treatment all affect clock quality and reliability. Follow the manufacturer pin-description table and recommended application circuit when assigning PCB tracks, and preserve short return paths from the clock output to the load to limit susceptibility to edge degradation and crosstalk. This product page organizes the ICS501GT clock-generator specifications, package information, documented substitution candidates, application guidance, and practical design notes into one engineering-focused reference. It supports faster part identification while highlighting the decisions engineers must still verify: frequency ratio, electrical limits, pin compatibility, lifecycle suitability, and application-specific timing requirements.

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ICS501M - 160 MHz PLL Clock Generator | Renesas | SOIC-8
ICS501M

ICS501M - 160 MHz PLL Clock Generator | Renesas | SOIC-8

The Renesas Electronics ICS501M is a LOCO PLL clock-multiplier and clock-generator IC with a 2 MHz to 50 MHz input range and up to 160 MHz output, housed in an 8-pin SOIC package. It generates high-frequency clock signals from a lower-frequency crystal or clock input, making it useful where a board requires local frequency multiplication without relying on a full crystal oscillator. The verified product listing identifies the ICS501M as a clock-generator IC with a 160 MHz maximum output and an 8-SOIC package. A clock generator is an integrated timing device that accepts a reference clock and produces one or more clock outputs with controlled frequency and phase relationships. A PLL clock multiplier belongs to the clock and timing IC hierarchy, alongside oscillators, frequency synthesizers, phase-locked loops, and clock buffers. The ICS501M uses phase-locked-loop techniques to multiply a lower-frequency source into a higher-frequency output, reducing the need for a high-speed crystal when the downstream circuit can tolerate the device’s timing characteristics. The verified ICS501M data specifies a 2 MHz to 50 MHz input range and a maximum 160 MHz output. Its 8-pin SOIC package is a surface-mount gull-wing package, and distributor records classify the device as a clock-generator or PLL clock-multiplier IC. The available material also identifies the LOCO product family as a cost-effective way to produce high-quality high-frequency clock outputs from lower-frequency crystals or clock inputs. Detailed operating-temperature, voltage, jitter, output-waveform, and load-current values are not present in the supplied verified data. Typical design use includes communications and networking equipment, digital logic requiring a multiplied reference clock, embedded systems, instrumentation, and embedded processing platforms. The device can be placed after a stable low-frequency crystal or digital clock source when the receiving circuitry needs a higher clock frequency. Designers should verify output frequency tolerance, phase noise, supply requirements, and timing margins against the downstream load before releasing a production design. The key design consideration is that frequency multiplication is not a substitute for verifying the complete clock chain. The reference source, crystal or source impedance, PLL loop behavior, output loading, and downstream timing requirements must be checked together. Because the supplied data does not include the full electrical timing table, those parameters remain marked as data needed rather than inferred. This page combines verified distributor and manufacturer-document references, package information, application context, pricing status, and replacement-screening guidance. It is intended to support preliminary BOM research while directing engineers to the exact manufacturer datasheet for final electrical, timing, reliability, and qualification decisions.

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ICS501MI - 140MHz LOCO PLL Clock Multiplier | Renesas Electronics
ICS501MI

ICS501MI - 140MHz LOCO PLL Clock Multiplier | Renesas Electronics

The Renesas Electronics ICS501MI is a LOCO PLL clock multiplier that generates a high-quality, high-frequency clock output from a lower-frequency crystal or clock input. It supports input frequencies from 2 MHz to 50 MHz and provides an output clock up to 140 MHz in an 8-pin SOIC package. The device is designed to replace conventional crystal oscillators in electronic systems where a stable reference clock multiplied to a higher frequency is required. A PLL-based clock generator is a timing IC that phase-locks an output signal to a reference source and multiplies the reference frequency. In the broader clock and timing hierarchy, the ICS501MI belongs to the PLL clock-multiplier family, a type of clock and timing IC used for frequency synthesis, clock distribution, and digital system timing. Its LOCO designation reflects a low-cost oscillator architecture intended to provide economical frequency multiplication without requiring a separate high-frequency crystal resonator. The ICS501MI accepts a fundamental-mode crystal or external clock source, making it useful for processor, communication, control, and embedded digital systems. The 140 MHz maximum output frequency provides ample headroom for systems requiring a higher-frequency operating clock from a lower-cost reference. Its 8-SOIC package is compatible with conventional surface-mount PCB assembly methods and is suitable for designs where component count and board area must be controlled. The principal design consideration is ensuring that the reference crystal, external clock, feedback network, and output interface meet the timing requirements of the target system. The PLL must operate within the specified input and output frequency ranges, and the associated passive components should be placed close to the device to minimize clock noise and signal-integrity degradation. The output clock should be routed away from high-current switching nodes and noisy analog sections of the board. Typical applications include digital controller clocking, communications equipment, embedded processors, industrial control systems, and general-purpose frequency multiplication. Using a PLL multiplier can reduce the number of specialized high-frequency crystals required in a design and provide a flexible way to derive multiple system timing domains. XAIPART provides an engineering-focused product record with manufacturer documentation, package information, practical design guidance, and verified sourcing details for design review and procurement.

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