Тактирование и синхронизация
Товары (160)
553SCMGI8 - Low Skew 1:4 LVCMOS Clock Buffer 200 MHz | Renesas
The Renesas 553SCMGI8 is a low skew, single-input to four-output LVCMOS clock buffer packaged in an 8-pin UFDFN (2x2 mm) with exposed pad. The device accepts one LVCMOS input and distributes four LVCMOS outputs with best-in-class additive phase jitter of sub-50 fs RMS and an extremely low output-to-output skew of 50 ps. It supports three common supply rails - 1.8 V, 2.5 V, and 3.3 V - through a wide VDD range of 1.71 V to 3.465 V, making it ideal for multi-voltage system designs. A clock buffer (also called clock fanout buffer or clock driver) is a timing IC that takes a single reference clock and replicates it onto multiple outputs while preserving edge fidelity and minimizing additive jitter. Clock buffers sit in the timing tree hierarchy between a PLL/oscillator and downstream clock-consuming devices (CPUs, FPGAs, ASICs, SerDes, memory controllers). By regenerating clean edges with low skew, they ensure deterministic timing across complex boards. Buffers are simpler than PLLs but must add negligible jitter so they do not degrade system-level phase noise budgets. The 553SCMGI8's headline specifications include <50 fs RMS additive jitter (12 kHz to 20 MHz), 50 ps output skew, 200 MHz maximum operating frequency, and -40 C to +105 C industrial operating range. The 8-pin UFDFN occupies only 2x2 mm of PCB area, enabling dense layouts in space-constrained designs. The exposed pad (EP) provides a low thermal resistance path, allowing continuous operation at high frequencies without derating. Architecturally, the 553S uses a low-jitter differential-pair input stage followed by matched output drivers and a precision skew-tuning network. All four outputs are designed with matched propagation delay, which is the foundation of the 50 ps skew specification. The device integrates LVCMOS input hysteresis, output slew-rate control, and internal bias generation - no external components are required beyond a single 0.01 uF decoupling capacitor on VDD. Typical applications include networking line cards, telecom baseband cards, server motherboards, FPGA/ASIC clock fanout, and storage area network controllers. The 200 MHz ceiling comfortably covers Ethernet, PCI Express Gen1/2 reference clocks, and most general-purpose processor clocking. When designing with this part, place a 0.01 uF decoupling capacitor as close as possible to VDD (pin 1) and GND (pin 4 / EP), and use a 33 ohm series termination resistor on each output if the trace exceeds 1 inch. Match output trace lengths to within 50 ps of equivalent electrical length to fully exploit the device's skew budget. This page synthesizes distributor pricing, application guidance, and drop-in alternatives that complement the Renesas datasheet with practical sourcing information.
553SDCGI - 1:4 LVCMOS Clock Buffer 200MHz 8-SOIC | Renesas
The Renesas 553SDCGI is a low-skew, single-input to four-output LVCMOS clock buffer IC that delivers best-in-class additive phase jitter of sub 50 femtoseconds and supports clock frequencies up to 200 MHz, housed in an 8-pin SOIC (3.90 mm) package. Designed for high-performance clock distribution, the device operates from a 2.375 V to 3.465 V supply and is well-suited to networking, telecom, and compute platforms requiring tight timing margins. A clock buffer (also called a clock fanout buffer or clock distribution IC) is a type of timing IC that replicates one input clock signal across multiple outputs with minimal added jitter and controlled skew. Within the broader timing hierarchy, clock buffers sit between clock generators (oscillators, PLLs, crystal units) and clock-consuming loads (processors, FPGAs, ASICs, serializers). The 553S family targets applications where PCB trace lengths, fanout requirements, or isolation needs make direct point-to-point clock distribution impractical. Key features of the 553SDCGI include sub-50 fs additive phase jitter (12 kHz to 20 MHz integration band), 1:4 fanout with matched output-to-output skew, LVCMOS-compatible outputs, and a low additive jitter profile that preserves source-clock integrity. The device also integrates an output enable function for power-saving modes and supports industrial temperature operation. Compared with multi-PLL clock trees, the 553S delivers cleaner, more deterministic signal distribution. The 553S architecture uses a low-jitter input receiver followed by a matched-output driver tree, ensuring that all four outputs remain tightly aligned in both frequency and phase. This topology makes the part especially attractive for distributing reference clocks to multiple ADCs, DACs, FPGA transceivers, or SERDES channels where inter-channel timing mismatch would degrade system performance. Typical applications include Ethernet switches and routers, telecom base stations, PCIe and SAS reference-clock fanout, FPGA/ASIC clock distribution, test and measurement instrumentation, and storage area networks. The 50 fs additive jitter specification is particularly valuable for high-speed serial links where the recovered clock's eye margin is sensitive to phase noise. When designing with the 553SDCGI, place a 0.01 uF decoupling capacitor directly between VDD (pin 1) and GND (pin 4) to minimize supply-induced jitter. Use 33 ohm series-termination resistors on outputs when the trace length exceeds 1 inch to control reflections and preserve signal integrity at 200 MHz edges. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing a single reference for engineers evaluating the 553SDCGI for new designs or replacement of legacy clock distribution circuits.
5L35023B-105NLGI - Programmable Clock Generator | Renesas
The Renesas Electronics 5L35023B-105NLGI is a VersaClock 3S programmable clock generator for low-power, consumer, and high-performance PCI Express applications. It uses a quartz crystal input and generates programmable clock outputs, while its OE pins can be configured as output enable, power-down, proactive power saving, dynamic frequency control, or reset functions. The device is available in the package designation represented by 5L35023B-105NLGI; exact package dimensions, pin names, frequency limits, voltage ratings, and electrical limits are not stated in the supplied verified records. A programmable clock generator is a timing IC that converts a reference input into one or more controlled output frequencies. It belongs to the clock and timing hierarchy, alongside clock generators, PLLs, frequency synthesizers, oscillators, and timing controllers. This category is important in digital systems because processors, serializers, communication links, memory interfaces, and PCI Express equipment require clocks with defined frequency, phase, and enable behavior. The verified Renesas product page identifies the 5L35023 as a VersaClock programmable clock generator. The verified datasheet search result states that specifications are characterized and guaranteed using a quartz crystal input. It also states that an LVPECL driver change requires selecting the appropriate R3 value. The same datasheet result identifies programmable OE-pin functions, allowing integration of output enable, chip power-down, proactive power saving, two-pin dynamic frequency control, and timer-associated reset functionality. The B-105NLGI ordering suffix distinguishes this exact Renesas orderable MPN from related 5L35023 variants. Because the supplied records do not expose a complete parameter table or package drawing, pin-level implementation, output frequency range, supply voltage, output format, operating temperature, and package dimensions remain to be confirmed from the manufacturer datasheet before layout or production release. The nearby 5L35023-105NLGI DigiKey result confirms that the broader 5L35023 family is sold as an integrated circuit, but it does not establish equivalence to the B-105NLGI suffix. Typical use cases include PCI Express clock distribution, low-power consumer electronics, embedded computing, communication equipment, and other systems requiring programmable timing. In a PCI Express design, the clock generator should be selected only after confirming reference frequency, output standard, jitter, supply voltage, configuration method, reset requirements, and package compatibility. In consumer or embedded systems, power-down and output-enable behavior can help control clock activity when the system is idle. Designers should begin with the crystal and load-capacitance requirements, then verify every datasheet limit and pin function. Decoupling should follow the manufacturer reference circuit, and PCB routing should preserve controlled-impedance clock paths and minimize noise coupling into sensitive analog or RF sections. Before purchasing or substituting the part, request the official Renesas datasheet and confirm the exact B-105NLGI ordering code.
5P35023B-000NLGI - 500MHz VersaClock 3S Programmable Clock Generator | Renesas
The Renesas 5P35023B-000NLGI is a member of the VersaClock 3S family of programmable clock generators, supporting up to six unique frequency outputs from a single device with maximum output frequency of 500 MHz and housed in a 24-VFQFN (4x4 mm) exposed-pad package. Designed for low-power consumer and high-performance PCI Express applications, this device integrates a three-PLL architecture where each PLL is individually programmable, enabling flexible frequency synthesis across multiple output standards including LP-HCSL, LVCMOS, LVDS, and LVPECL. Operating voltages span 1.71V to 1.89V, 2.375V to 2.625V, and 3.135V to 3.465V across its supply rails. A VersaClock 3S programmable clock generator is a timing IC that synthesizes multiple independent reference frequencies from a common reference input, replacing banks of fixed-frequency crystals and oscillators in digital systems. In the broader product taxonomy, programmable clock generators fall under clock generators, which are themselves a subcategory of clock and timing ICs within the power management and signal integrity domain. They serve as the timing backbone of any synchronous digital system, including CPUs, FPGAs, ASICs, SoCs, and high-speed serial interfaces where deterministic, low-jitter reference clocks are mandatory. Key differentiating features include one-time programmable (OTP) non-volatile memory that stores the customer's frequency configuration, eliminating the need for external resistor programming. The device also supports a configurable output enable (OE) pin function that can operate as OE, PD#, PPS, or DFC control. I2C interface enables in-system programming and dynamic frequency adjustment. Integrated PLLs deliver sub-picosecond RMS phase jitter for PCI Express Gen 3/4 compliance, and the 4x4 mm QFN-24 package with exposed pad offers low thermal resistance suitable for industrial temperature operation. Typical applications for the 5P35023B-000NLGI span PCI Express Gen 3/4 reference clocks for server and storage controllers, USB 3.0/3.1 reference clocks for hub and peripheral designs, multi-standard SoC clock trees for FPGA and processor reference designs, and consumer audio/video equipment requiring multiple synchronized sample rates. The OE/PD# flexibility supports dynamic power management in mobile platforms, while the LVPECL/LVDS output options enable direct connection to high-speed serializer/deserializer channels without external level translation. When designing with this device, verify that the OTP image matches your target output frequency plan before committing to volume orders, since OTP configuration cannot be altered once programmed. For PCI Express applications, confirm the part is configured with the correct PCIe-compliant spread-spectrum profile and reference multiplier. The exposed pad must be soldered to a sufficiently large copper pour to maintain thermal performance and meet jitter specifications at the maximum 500 MHz output frequency.
5PB1106CMGI - 1:6 LVCMOS Clock Buffer 200MHz QFN-16 | Renesas
The Renesas 5PB1106CMGI is a high-performance 1:6 LVCMOS clock fanout buffer that delivers a best-in-class additive phase jitter of 50 fs RMS, operating from a 1.8 V to 3.3 V supply and housed in a 16-pin QFN package. It accepts one LVCMOS reference clock and produces six skew-matched LVCMOS outputs at 200 MHz, with an Output Enable function for power-gating unused banks. A clock buffer (or fanout buffer) is a timing IC that replicates a single reference clock into multiple identical copies, each driving a separate load while preserving phase, frequency, and edge-rate fidelity. Within the broader clock-tree hierarchy, clock buffers sit between PLLs, oscillators, or upstream generators and downstream loads such as SoCs, FPGAs, memory controllers, and high-speed transceivers. They are essential when a source cannot drive all loads directly due to fanout limits or routing asymmetry. The 5PB1106CMGI delivers 50 fs RMS additive phase jitter (12 kHz to 20 MHz integration), a low propagation delay of ~3 ns typical, and output-to-output skew under 100 ps. It supports LVCMOS input levels on the primary input pin and reproduces them on six outputs, all sourced from a common internal tree. The Output Enable pin allows system-level power sequencing, while internal termination minimizes external component count. Architecturally, the device combines a low-jitter input receiver, a precision matched-delay distribution tree, and six LVCMOS output drivers with controlled slew rate. This design ensures that adding the buffer contributes minimal jitter to upstream PLLs, preserving signal integrity in jitter-sensitive SERDES, ADC/DAC sampling clocks, and FPGA reference inputs. The wide 1.8 V to 3.3 V supply range enables direct interface with modern low-voltage processors without level translation. Typical applications include distributing a baseband reference clock to FPGAs and ASICs, driving multiple DDR memory channels, networking switch/router clock trees, PCIe reference clock fanout, and test/measurement instrumentation. In PCIe Gen 3/4 systems, the part meets the additive jitter budget needed for 100 MHz reference distribution. When designing with the 5PB1106CMGI, route the six outputs with matched trace lengths to preserve the on-chip skew budget, place the supply decoupling within 2 mm of the VDD pins, and leave the exposed pad soldered to a continuous ground plane for thermal relief. This page synthesizes distributor pricing, drop-in alternative coverage, and practical design notes that go beyond the manufacturer datasheet to support faster design-in decisions for the 5PB1106 family.
5PB1106CMGI8 - 1:6 LVCMOS Clock Buffer, 200 MHz, 16-QFN | Renesas
The Renesas 5PB1106CMGI8 is a high-performance 1:6 LVCMOS clock buffer that delivers a best-in-class additive phase jitter of 50 fs RMS while operating from a 1.8 V to 3.3 V supply. It accepts a single LVCMOS clock input and produces six LVCMOS outputs at the same frequency, with each output rising/falling within 50 ps of each other to maintain tight inter-bank skew. The part is housed in a 16-pin QFN package (3.0 x 3.0 mm) and supports an Output Enable function for power sequencing and tri-state control. A clock buffer is a fanout device used to distribute a single reference or system clock to multiple loads while preserving edge fidelity, phase noise and duty cycle. Buffers sit in the clock-tree hierarchy between the PLL/oscillator (which synthesizes the frequency) and downstream loads such as SoCs, FPGAs, ASICs, PHY transceivers, memory controllers and ADCs. The 5PB1106 occupies the distribution tier and is typically paired with a low-jitter synthesizer such as the Renesas 82-series or an external crystal oscillator. Because every added buffer contributes additive jitter, the 50 fs RMS figure is the headline metric when evaluating this category. Key features include a 200 MHz maximum input/output frequency, LVCMOS-compatible inputs and outputs, low output-to-output skew, an asynchronous Output Enable (OE) pin for tri-state control, and a wide 1.8 V to 3.3 V supply range that simplifies multi-rail designs. The device is fabricated in a low-power CMOS process, with a typical quiescent current around 30 mA at 3.3 V across all six outputs toggling. Typical applications for the 5PB1106CMGI8 include telecom and networking line cards, server and storage controllers, FPGA/ASIC clock distribution on evaluation boards, A/V broadcast equipment, and any multi-load system where a clean reference must be replicated without introducing significant phase noise. It is frequently used as a fanout companion to Renesas 82-series PLL multipliers and other femto-second-grade synthesizers. When laying out the PCB, keep input and output traces short and matched, place a 0.1 micro-Farad decoupling capacitor within 2 mm of the VDD pin, and avoid routing output traces near noisy switching rails. The OE pin can be tied high if tri-state control is not needed; if unused, leave the input grounded through 10 kOhm to prevent floating. This page synthesizes distributor pricing, drop-in alternatives in the same 16-QFN footprint, and practical design notes not found in the standalone manufacturer datasheet.
5PB1203NTGK - 1:3 200MHz LVCMOS Clock Buffer | Renesas
The Renesas 5PB1203NTGK is a 1.8 V, 1:3 high-performance TCXO/LVCMOS clock fanout buffer in a 10-pin WFDFN exposed-pad package, designed for mobile and low-power applications. It accepts a square-wave LVCMOS clock or a clipped sine-wave TCXO source on the CLKIN pin and produces three low-jitter LVCMOS outputs, each gated by an individual output-enable (OE) pin. Maximum output frequency is 200 MHz with sub-ps additive jitter and ultra-low supply current. A clock buffer (also called a clock fanout buffer or clock driver) is a timing component that replicates a single reference clock across multiple outputs while preserving edge fidelity. Within the broader IC taxonomy, the 5PB1203 sits under timing ICs -> clock generation -> clock buffers, and ultimately under the mixed-signal/power management hierarchy. Buffers solve the fanout problem: a single oscillator cannot drive many ASIC pins because its output impedance and current limit would distort the edge. The 5PB1203's three individually-controlled OE pins enable per-rail power gating in mobile platforms. Key features include industry-leading low additive jitter, extremely low quiescent current consumption, wide input compatibility (square wave or clipped sine), and individual output enables that simplify dynamic power management. The 1.8 V supply rail aligns with modern mobile SoC voltage domains, eliminating the need for level translators. Technically, the part uses a low-voltage CMOS core with internal terminations optimized for both LVCMOS and clipped-sine sources. The exposed thermal pad (EP) provides a low-impedance ground return and improves thermal performance for hand-held designs. According to the Renesas product brief, the device targets smart mobile devices where every milliwatt of clock-distribution power matters. Typical applications include smartphone baseband clock distribution, wearable GNSS reference fanout, tablet application-processor clock trees, and IoT sensor-hub timing. The clipped-sine input compatibility is particularly useful when distributing a TCXO reference to multiple SoC domains. When designing with the 5PB1203NTGK, place the device close to the SoC with the exposed pad soldered to a continuous ground pour for thermal and EMI performance; bypass VDD with a 0.1 uF and 1 uF ceramic pair as close to the supply pin as possible.
5PB1203NTGK8 - 1.8V 1:3 TCXO/LVCMOS Clock Buffer | Renesas
The Renesas 5PB1203NTGK8 is a high-performance 1:3 TCXO/LVCMOS clock fanout buffer housed in a 10-pin WFDFN Exposed Pad package. It accepts either a square-wave LVCMOS signal or a clipped sine-wave TCXO output on the CLKIN pin and produces three low-jitter LVCMOS outputs, each gated by its own output-enable pin. The device operates from a 1.8 V nominal supply (1.7 V to 1.9 V range), supports frequencies up to 200 MHz, and is specified across the -40 °C to +105 °C automotive/industrial temperature range. A clock buffer (also called a fanout buffer or clock driver) is a timing component that receives a single reference clock and replicates it on multiple outputs while preserving edge fidelity, jitter, and skew. Clock buffers sit in the clock-distribution hierarchy between an oscillator or TCXO source and downstream loads such as SoCs, FPGAs, ASICs, PHY chips, and SerDes blocks. Compared with simple gate-based fanout, a dedicated buffer like the 5PB1203 provides controlled impedance, additive jitter in the femtosecond range, and per-output enable control, which are critical for mobile, networking, and industrial designs where power-rail sequencing and EMI must be tightly managed. Key features of the 5PB1203NTGK8 include industry-leading low additive jitter, extremely low quiescent current consumption suitable for always-on mobile platforms, individual OE pins (OE0/OE1/OE2) for independent output gating, and support for both LVCMOS square-wave and clipped sine-wave TCXO inputs. The 10-WFDFN Exposed Pad package delivers a low thermal resistance path and minimizes PCB area on space-constrained wearables, smartphones, and IoT modules. The 5PB1203 uses a low-noise differential input stage followed by matched output drivers with internal source termination, achieving additive RMS jitter in the sub-picosecond range when measured per the 12 kHz-to-20 MHz integration bandwidth defined in common telecom/datatelecom jitter masks. The three outputs are skew-matched within a few picoseconds, which simplifies timing closure in multi-domain SoCs that share a common reference. Typical applications include smart mobile devices, wearables, IoT endpoints with GNSS, small-cell and femtocell base-station timing, networking line cards requiring redundant reference distribution, and PCIe/synchronous Ethernet PHY reference fanout. The clipped-sine input compatibility is especially useful where the upstream source is a TCXO instead of an LVCMOS oscillator. When designing with the 5PB1203NTGK8, place the exposed-pad solder footprint directly under the IC and stitch it with thermal vias to the inner ground plane. Use a 0.1 µF ceramic decoupling capacitor within 2 mm of the VDD pin, and route CLKIN as a 50 Ω controlled-impedance trace. If a TCXO source is used, AC-couple the input and bias it according to the datasheet's recommended network to preserve duty cycle and minimize jitter. This page consolidates distributor pricing, drop-in alternatives, and design guidance that are not aggregated on the manufacturer datasheet, giving engineers a single reference for sourcing, selection, and PCB implementation of the 5PB1203 family.
74FCT38075SCMGI8 - 1:5 LVCMOS Clock Buffer, 50fs Jitter | Renesas
The Renesas 74FCT38075SCMGI8 is a low-skew, single-input-to-five-output LVCMOS clock buffer that delivers best-in-class additive phase jitter of sub-50 fs RMS. Packaged in an 8-pin DFN (UFDFN) with exposed pad, it operates from a 1.8 V to 3.3 V supply and supports clock frequencies up to 200 MHz, making it ideal for distributing a low-noise reference clock to multiple loads in tightly synchronised systems. A clock buffer is a fanout device that takes one reference clock and replicates it across multiple outputs while preserving timing integrity. Buffers such as the 74FCT38075S sit between a clock source (crystal oscillator, PLL, or FPGA) and downstream loads (DACs, ADCs, FPGAs, SerDes, microcontrollers). They are essential in mixed-signal and high-speed digital systems where skew, jitter, and noise directly limit bit-error-rate, ADC SNR, and image-sensor frame-to-frame consistency. Within the broader taxonomy, the 74FCT38075S belongs to the family of clock-tree buffers -> timing ICs -> clock & timing -> integrated circuits. Key features include <50 fs RMS additive phase jitter, 50 ps output-to-output skew, LVCMOS-compatible 1.8 V/2.5 V/3.3 V outputs, and an internal input hysteresis that rejects coupled noise on the input trace. The exposed-pad DFN package minimises thermal resistance and provides a low-impedance ground return, preserving edge fidelity even at 200 MHz switching rates. The "I8" suffix indicates tape-and-reel packaging for high-volume assembly. The device uses a low-skew differential-to-LVCMOS receiver with matched output tree, achieving sub-50 fs RMS additive jitter at 156.25 MHz output. This makes it suitable for cleaning up jitter-sensitive SerDes reference clocks without contributing measurable degradation of the link budget. Typical applications include networking switches and routers, telecom base-station timing, FPGA fanout, ADC/DAC reference distribution, and precision test-and-measurement backplanes. The DFN footprint also suits space-constrained designs such as industrial sensor modules and high-channel-count data-acquisition boards. When designing with this part, place a 0.01 µF decoupling capacitor as close as possible between VDD (pin 2) and GND (pin 4), match trace lengths across all five outputs, and consider 33 Ω series termination if any output trace runs more than 25 mm. This page synthesises distributor pricing, drop-in alternatives, and practical PCB layout guidance not found in the manufacturer datasheet, with cross-references to JEDEC-standard MSL-1 moisture sensitivity classification.
82P33913-1NLG - SyncE/1588 PTP Synchronizer IC | Renesas
The Renesas 82P33913-1NLG is a high-performance synchronization System-on-Chip (SoC) for IEEE 1588 Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) applications, integrating a 650 MHz ARM processor core, three independent DPLLs, and three programmable synthesizers in a 72-pin VFQFPN (10x10 mm) package. According to the Renesas product page, the device targets carrier-grade Ethernet equipment where PTP master and slave clocks, Stratum-3E holdover, and SONET/SDH reference timing must coexist on a single silicon die. The part number suffix "-1NLG" denotes the carrier-grade software build; the "NLG" suffix identifies the lead-free, RoHS-compliant 72-VFQFPN package with exposed thermal pad. A Synchronization System-on-Chip is a mixed-signal IC that combines a microcontroller or DSP engine, multiple Digital Phase-Locked Loops (DPLLs), fractional-N output synthesizers, and time-stamping hardware into one package. It sits between the PTP/SyncE packet network and the local clock tree of the line card, replacing dozens of discrete oscillators, jitter cleaners, and clock-generator ICs. In the hierarchy of clocking components, this category belongs above standalone PLL jitter cleaners and below full PTP grandmaster modules, serving as the on-board timing brain of 4G/5G base stations, DSLAMs, GPON/OLT line cards, and Ethernet switches. Key features of the 82P33913-1NLG include IEEE 1588-2008 (v2) PTP slave and master operation, SyncE/SONET/SDH reference selection, three independent DPLLs with programmable bandwidth, Stratum-3/3E holdover performance, and a 1 PPS / TOD time-stamp interface. The device supports multiple output formats including 1.544 MHz, 2.048 MHz, 25 MHz, 125 MHz, 156.25 MHz, and 161.1328 MHz. Software control uses the Renesas TimingMaker GUI and a host-side API, with firmware loaded via SPI or I2C boot. The 82P33913-1NLG utilizes a mixed-signal architecture pairing a high-speed 65-bit DPLL accumulator with a low-jitter fractional-N output stage. Internal EEPROM stores per-card calibration constants, while the on-chip ARM core runs the PTP stack and servo algorithm. This vertical integration removes the inter-IC jitter that arises when the PTP software, DPLL, and synthesizers are split across separate devices, delivering sub-nanosecond RMS phase noise in the typical SyncE output path. Typical applications include SyncE-aware Ethernet switches, 4G/5G mobile backhaul equipment, GPON/OLT line cards, IEEE 1588 grandmaster and boundary clocks, and SONET/SDH Add-Drop Multiplexers. In each, the 82P33913-1NLG acts as the central timing engine, recovering frequency from the network and synthesizing the local clocks required by PHYs, FPGAs, and baseband ASICs. When designing with the 82P33913-1NLG, follow the Renesas TimingMaker reference schematic: place 0.1 µF and 10 µF decoupling capacitors within 2 mm of every VDDCORE/VDDIO pin, route the 25 MHz crystal traces as a guarded differential pair, and ensure the exposed pad is soldered to a continuous ground plane for thermal dissipation. Holdover accuracy degrades sharply if the TCXO/OCXO reference is noisy, so budget for a sub-1 ppm reference oscillator. This page synthesizes distributor pricing for the 82P33913-1NLG, package-level alternative coverage, application-specific design guidance, and PTP/SyncE comparison context not collated in the manufacturer datasheet alone.
85320AMILF - 1:1 LVCMOS/LVTTL-to-LVPECL Translator | Renesas
The Renesas 85320AMILF is a 1:1 LVCMOS/LVTTL-to-Differential 3.3V/2.5V LVPECL clock translator housed in an 8-pin SOIC package. It accepts a single-ended LVCMOS or LVTTL clock input and converts it to a differential LVPECL output pair, supporting a maximum output frequency of 267 MHz with a part-to-part skew of 275 ps (maximum). The device is part of Renesas' HiPerClocks family of high-performance clock solutions. A clock translator (also called a clock level shifter) is a specialized mixed-signal IC that bridges different logic-level signaling standards within a timing distribution network. Common clock standards include LVCMOS, LVTTL, LVPECL, LVDS, HCSL, and CML, each with different voltage swings, common-mode ranges, and jitter budgets. Clock translators sit between a source oscillator/buffer and a downstream load (FPGA, ASIC, serializer, ADC clock input) and preserve edge fidelity while adapting levels. Key features of the 85320AMILF include additive phase jitter of 0.05 ps RMS (typical), 3.3V operating supply voltage (3.135V to 3.465V range) and 2.5V operating supply voltage (2.375V to 2.625V range). The 8-pin SOIC package is small, surface-mountable, and suitable for compact board layouts where high performance and low power are required. Architecturally, the device uses a differential LVPECL output stage driven by an internal bias network referenced to VCC. The single-ended input stage accepts LVCMOS/LVTTL swing levels and feeds a limiting amplifier to produce a clean differential output. The low additive jitter (0.05 ps RMS) makes the part suitable for jitter-sensitive serializer/deserializer (SerDes) reference clocks and high-speed ADC/DAC sampling clocks. Typical applications include telecommunications backplane clock translation, networking line-card timing, FPGA/ASIC reference-clock level shifting, and test-and-measurement instrumentation where a low-jitter LVPECL distribution rail is required. The dual 2.5V/3.3V supply option simplifies designs that interface with mixed-voltage ASICs. When designing with this device, pay attention to LVPECL termination: each output pair typically requires a 50-ohm termination to VCC-2V (Thevenin-equivalent bias). Unused outputs should be left floating per the datasheet recommendation, not tied to ground. Maintain a clean supply with a 0.1 uF decoupling capacitor close to VCC. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical termination guidance not found in the standalone datasheet, giving engineers a single reference for sourcing and design-in decisions.
874003BG-05LF - 320MHz PCIe Jitter Attenuator | Renesas
The Renesas 874003BG-05LF is a PCI Express (PCIe) fanout buffer and jitter attenuator IC built on IDT's 3rd Generation FemtoClock PLL technology, supporting input frequencies up to 320MHz with one differential output in a 20-pin TSSOP package. It accepts HCSL, LVDS, and LVHSTL reference inputs and produces a low-phase-noise clock suitable for PCIe add-in cards and embedded computing platforms. A jitter attenuator is a clock-domain device that cleans the phase noise of an incoming reference clock and regenerates a high-purity low-jitter signal. It sits between an upstream oscillator or PLL and downstream logic (SerDes, PCIe PHYs, ASICs), where cycle-to-cycle timing variation directly impacts link bit-error-rate. PCI Express specifications demand very tight PCIe Gen 2/3 jitter budgets, making FemtoClock-class jitter attenuators a common solution. The 874003 family belongs to a broader Renesas clock-IC portfolio that includes fanout buffers, synthesizers, and frequency multipliers used across networking and computing. Key specifications include 320MHz maximum input/output frequency, differential HCSL/LVDS/LVHSTL input compatibility, low additive jitter from the FemtoClock PLL, single 3.3V supply operation, and industrial 0°C to +70°C commercial temperature grade. The 20-pin TSSOP package saves board area compared with QFN alternatives and is well suited to compact PCIe add-in cards. Typical applications include PCI Express add-in cards, server motherboards, networking switches and routers, embedded computing platforms, and storage controllers that require a low-jitter PCIe reference clock sourced from a noisy system clock domain. Designers should pay attention to power-supply decoupling and output trace impedance when integrating this part. Place 0.1µF ceramic bypass capacitors close to each supply pin and maintain 100-ohm differential routing on the HCSL outputs to meet PCIe compliance. This page synthesizes current distributor pricing, drop-in alternatives from the same Renesas 874003 family and cross-brand PCIe jitter attenuators, plus practical layout and decoupling notes not consolidated in the manufacturer datasheet.
8N3SV75BC-0099CDI - 187.5MHz FemtoClock VCXO, LVPECL | Renesas
The Renesas 8N3SV75BC-0099CDI is a programmable FemtoClock voltage-controlled crystal oscillator (VCXO) factory-programmed to deliver a 187.5 MHz LVPECL output from a 2.375V to 2.625V supply in a hermetic 6-CLCC ceramic surface-mount package. It is part of the 8N3SV75 family of frequency-programmable precision timing devices with sub-picosecond jitter performance. A VCXO (voltage-controlled crystal oscillator) is a type of oscillator whose output frequency can be finely adjusted by an external control voltage applied to a tuning pin. It is a member of the broader oscillator taxonomy: VCXO -> crystal oscillator -> timing device -> clock generator -> frequency control component. VCXOs are used where the local reference needs to be locked to a network or backplane clock via a phase-locked loop. Key features include a 187.5 MHz LVPECL differential output, 2.5V supply operation, sub-ps RMS phase jitter, and FemtoClock ultra-low-jitter architecture. The 8N3SV75 platform supports factory-programmable output frequencies from 15.476 MHz to 1500 MHz with 1 ppm or better frequency stability across industrial temperature ranges. The device uses a third-overtone crystal with a fundamental-frequency PLL multiplier and a low-noise LVPECL output stage. Internal LDOs isolate the oscillator core from supply noise, yielding high PSRR and predictable jitter behavior even when the host board supplies a noisy 2.5V rail. Typical applications include SONET/SDH line cards, optical transport network (OTN) framers, FPGA serializer/deserializer reference clocks, high-speed ADC/DAC sampling clocks, and wireless base station timing references. Any 187.5 MHz reference point - including legacy Ethernet PHYs - can be served by this part. A critical design consideration is that the output frequency is fixed at order time; frequency changes require a new MPN. Layout must keep the LVPECL pair (OUT, /OUT) matched-length and 50-ohm terminated at the receiver. This page synthesizes distributor pricing, same-package alternatives, and design guidance not found in the manufacturer datasheet.
8N4SV75BC-0099CDI - FemtoClock VCXO 187.5 MHz LVDS 6-CLCC | Renesas
The Renesas (formerly IDT) 8N4SV75BC-0099CDI is a programmable FemtoClock VCXO frequency synthesizer delivering an LVDS output at 187.5 MHz from a 6-CLCC ceramic package. As a member of the 8N4SV75 FemtoClock family, this device integrates a fractional-N PLL with a low-jitter VCXO stage, allowing system designers to generate non-integer reference frequencies with sub-picosecond RMS jitter performance. The 'BC' suffix denotes the 6-CLCC (7.0 x 5.0 mm) hermetic package and the LVDS output type, which is verified through distributor listing at Mouser and DigiKey. What is a FemtoClock VCXO? A VCXO (Voltage-Controlled Crystal Oscillator) is a timing component whose output frequency can be finely adjusted by an external control voltage, enabling PLL-based jitter attenuation or frequency fine-tuning in synchronous networks. A FemtoClock refers specifically to the Renesas/IDT FemtoClock NG family that combines a fractional-N PLL with a low-jitter oscillator core to deliver sub-picosecond RMS phase jitter, typically below 0.5 ps RMS (12 kHz to 20 MHz). These devices occupy the application layer between standard XOs (no tuning) and full clock generators, in the broader hierarchy of clock and timing ICs inside the Power Management / Clock & Timing tree of an electronic system. Key features of this part include a programmable output frequency from 15.476 MHz to 866.72 MHz, low additive RMS jitter under typical LVDS load, an integrated Voltage Controlled Crystal Oscillator tuning port with a sensitivity optimized for 50 ppm pull range, an operating supply range of 2.375 V to 3.465 V, and a select-one of eight pre-configured frequency profiles stored in one-time programmable (OTP) memory. The LVDS output swing (~350 mV differential) provides strong noise immunity for backplane and high-speed serial links, while the 6-CLCC hermetic package simplifies board integration for industrial designs. Architecture-wise, the 8N4SV75 FemtoClock platform routes the VCXO output through a sigma-delta fractional-N PLL to the LVDS driver. The PLL multiplier and divider ratios are encoded into OTP during the Renesas factory programming step, so every MPN variant (e.g. -0099CDI vs -0999CDI8) corresponds to a unique frequency code. Typical applications include telecom backplane synchronization, network routers and switches, FPGA and ASIC reference clocks, PCIe/SERDES reference inputs, and instrumentation timing cards. Designers select this part when they require a board-mounted frequency reference with a fine tuning range and picosecond-level jitter without designing a discrete PLL. When laying out, keep LVDS traces at 100 ohm differential, place the AC-coupling caps close to the receiver, and power the rail from a low-noise LDO. Decoupling requirements and OTP programming constraints should be confirmed against the Renesas family datasheet before schematic commit. This page integrates distributor stock levels, drop-in compatible FemtoClock alternatives, and parameter-by-parameter application notes not present in any individual listing.
8SLVP1212ANLGI - 2:12 LVPECL Fanout Buffer, 2 GHz | Renesas
The Renesas 8SLVP1212ANLGI is a high-performance, 2:12 differential LVPECL fanout buffer designed for the distribution of high-frequency, very low additive phase-noise clock and data signals. The device accepts one differential LVPECL input pair and generates twelve LVPECL output pairs, operates from a 3.3 V or 2.5 V supply, and supports toggle frequencies up to 2 GHz. It is housed in a 40-pin 6 mm × 6 mm VFQFN-EP (NLG) package with an exposed pad for thermal dissipation. What is a clock fanout buffer? It is a clock distribution IC that replicates a single reference clock across multiple outputs while preserving edge fidelity, skew, and phase noise. Fanout buffers sit between a clock source (crystal oscillator, PLL, or upstream serializer) and downstream loads (FPGA transceivers, ADC/DAC sample clocks, switch fabric, DSP cores), forming a tier of the broader clock-tree hierarchy: clock source -> fanout buffer -> clocked loads. Their primary engineering value is guaranteeing output-to-output skew, part-to-part skew, and additive jitter so that multi-channel systems stay synchronized. Key features of the 8SLVP1212ANLGI include guaranteed low output-to-output skew, very low additive phase noise for high-frequency clock distribution, internal termination on LVPECL inputs for impedance matching, and an operating temperature range of -40 °C to +85 °C. The differential LVPECL I/O swings (~800 mV) reject common-mode noise on the clock traces, which is essential across long PCB routes in multi-board chassis. Power consumption is dominated by the twelve LVPECL output drivers; the exposed-pad package is required for continuous full-load operation. Typical applications include clock distribution in high-speed telecommunications line cards, multi-channel ADC/DAC sampling systems, FPGA reference clock networks, storage area network (SAN) switches, and high-end test-and-measurement instrumentation. When laying out the PCB, place the device close to the clock source to minimize input trace length, route the LVPECL outputs as 100 Ω differential pairs, and stitch the VFQFN-EP exposed pad with multiple thermal vias for thermal relief under maximum load. This page synthesizes distributor pricing, drop-in alternatives, and PCB layout guidance not found in the manufacturer datasheet.
9DBL411BGLFT - 150MHz 4-Output PCIe Fanout Buffer | Renesas
The Renesas Electronics 9DBL411BGLFT is a 3.3 V, four-output low-power differential fanout buffer with a maximum operating frequency of 150 MHz, supplied in a 20-pin TSSOP package. It distributes one differential clock input across four independently controlled differential output pairs for PCI Express and QPI systems. According to the verified manufacturer information, the device supports PCI Express Gen1, Gen2, and Gen3 signaling and includes a dedicated OE# control for each output pair. A PCI Express fanout buffer is a clock-distribution and differential-signal-integrity component used to provide one input signal with multiple low-skew copies. In a larger system, the device sits between a clock source or upstream transceiver and several PCI Express destinations. Its four-output architecture reduces the need for duplicated clock-generation circuits, while individual output enables permit unused outputs to be disabled during test or power-management conditions. The key verified characteristics are a 3 V to 3.6 V supply range, 150 MHz maximum operating frequency, 50 ps skew, output-cycle-to-cycle jitter below 25 ps additive, and four individually controlled output enables. The package is identified as a surface-mount TSSOP-20 with a 4.40 mm body and 0.65 mm pitch, and the source material identifies it as RoHS compliant. The low-power differential-output architecture is intended for high-speed communication equipment, including PCIe and QPI clock or signal distribution. The 9DBL411 is especially relevant where a system needs multiple copies of a 3.3 V differential signal and predictable output-enable control. Compared with a generic single-output clock driver, it consolidates four output pairs in one device. Compared with a central buffer that lacks per-output control, it allows each destination to be enabled or disabled separately. The 150 MHz operating limit should still be checked against the actual interface requirement, especially when retiming, cable loss, or receiver tolerance affects the system design. Typical applications include PCI Express endpoint and root-complex clock distribution, QPI interface distribution, server and workstation motherboard clock trees, high-speed interface test equipment, and industrial communication modules using differential signaling. In each case, the designer must preserve the differential pair geometry, provide the required input and output termination specified by the system architecture, and validate timing, power, and enable sequencing at the board level. A critical design consideration is that this is a differential fanout buffer rather than a general-purpose regulator or logic gate. Route each differential pair as a controlled-impedance connection, minimize stubs and mismatched branches, and confirm OE# polarity and timing before enabling downstream receivers. Verify the complete datasheet for exact pin names, recommended termination, and application-specific timing margins. This page combines verified distributor and manufacturer information with package, application, sourcing, and design guidance to help engineers evaluate the 9DBL411BGLFT. It is intended as a concise engineering reference rather than a substitute for the manufacturer datasheet, especially for pin-level implementation and production qualification.
9DBV0441AKILF - 1.8V PCIe Gen1-3 4-Ch Clock Buffer | Renesas
The Renesas 9DBV0441AKILF is a 1.8 V, 4-output very-low-power zero-delay/fanout clock buffer (ZDB/FOB) optimized for 100 MHz PCI Express Gen1, Gen2, and Gen3 (and software-selectable 125 MHz Ethernet) applications, housed in a 32-pin VFQFPN 5x5 mm package. It integrates 100 ohm output terminations, supports HCSL-compatible differential input, and provides four HCSL outputs with programmable amplitude and slew rate per output. Output frequency is 100 MHz PCIe default with 125 MHz Ethernet selectable through software, and a pin-selectable PLL bandwidth/PLL-bypass mode lets designers minimize phase jitter for each application. A zero-delay buffer (ZDB) is a type of clock buffer IC that maintains the timing relationship between input and output clocks using an internal phase-locked loop (PLL). ZDBs sit in the clock distribution hierarchy between the platform clock generator (e.g., CK410/CK505) and endpoint devices, regenerating and fanning out low-jitter clocks to multiple loads while preserving input-to-output delay within tens of picoseconds. As a member of the SOC-Friendly 1.8 V VLP PCIe family, this part is specifically positioned for power-sensitive SoC platforms where 1.8 V supply rails are already present. Key differentiating specifications include four HCSL outputs with integrated 100 ohm terminations (eliminating external Rs at each output), software-selectable 100 MHz/125 MHz operation, pin/software-selectable PLL bypass for minimum jitter mode, and per-output programmable slew rate for tuning across varied line lengths. The 32-VFQFPN (5x5) package with exposed pad provides a low thermal resistance path suited to the part's very-low-power consumption profile. The architecture uses an internal PLL with programmable loop filter, allowing the designer to choose between high-bandwidth tracking of the reference (best for jitter attenuation of upstream noise) and low-bandwidth (best for low-frequency jitter transfer to outputs). HCSL outputs are PCIe-compliant and meet all PCIe Gen1-Gen3 base specification jitter masks. Differential input accepts common clock sources including those compliant with CK410/CK505 or PCIe reference clocks. Power is delivered through a single 1.8 V rail, simplifying motherboard layout and BOM. Typical applications include server and workstation PCIe slot clock distribution, embedded computing platforms with PCIe endpoints, networking switches and routers with 1GbE/10GbE PHYs, storage controllers (SAS/SATA/NVMe), and industrial PCIe expansion cards. The combination of very-low-power operation, small package, and integrated terminations makes the part especially attractive for space-constrained SoC designs. Designers should pay attention to the reference clock input routing (maintain 100 ohm differential impedance), per-output amplitude/slew programming via SMBus, and thermal pad soldering for the 32-VFQFPN exposed pad. Verify the PLL bandwidth setting matches the jitter profile required by downstream endpoints. This page synthesizes distributor pricing, drop-in Renesas/PCB-compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet.
9DML0441AKILF - 2:4 3.3V PCIe Gen 1-5 Clock Mux | Renesas
The Renesas 9DML0441AKILF is a 2:4 3.3V PCIe Gen 1-5 clock multiplexer (mux) housed in a space-saving 4 mm × 4 mm 24-VFQFPN package. It delivers one 100 Ω output impedance channel set with HCSL-compatible differential inputs and integrated output terminations for direct connection to 100 Ω transmission lines, eliminating up to sixteen external resistors and shrinking PCB area. Typical power consumption is only 79 mW. A clock buffer (also called a clock multiplexer or clock fanout buffer) is a timing-IC building block that selects between two or more reference clocks and replicates the selected reference to one or more outputs while preserving edge rate, duty cycle and phase noise. Buffers sit one layer below the phase-locked loop (PLL) and above the serializer/deserializer (SerDes) PHY in the clock tree, and they are the standard way to route a PCIe reference-clock from a system clock generator to multiple endpoints such as root complexes, switches, retimers and NVMe SSDs. Key features of the 9DML0441AKILF include PCIe Gen 1-5 Common Clocked (CC), Separate Reference no Spread (SRnS), and Separate Reference Independent Spread (SRIS) architecture support, Spread Spectrum Clocking (SSC) compatibility, individual OE# pins for each output, and selectable asynchronous or glitch-free gapped-clock switching. The glitch-free mode allows the mux to be selected at power-up even if both inputs are not running, then transitions to glitch-free switching once both inputs are active. This dual-mode behavior is essential for systems that must boot from a single reference and later switch to a redundant or spread reference without producing runt pulses. Architecturally, the device uses a 3.3 V core with HCSL input receivers, an internal 2:1 selector, four differential output drivers with on-die 100 Ω termination, and per-output OE# logic. The integrated terminations are the main differentiator versus discrete PCIe buffers that require 16 external source-termination resistors. Typical applications include server motherboards, NVMe SSD controllers, PCIe switches and retimers, workstation add-in cards, and embedded computing platforms that need a robust 100 Ω PCIe reference-clock multiplexer. The wide PCIe Gen 1-5 compliance also makes it suitable for Gen 4 and Gen 5 backplane designs. When designing with this part, choose 85 Ω variants (e.g., 9DML0451AKILF) for 85 Ω board traces; the 100 Ω output impedance of the 9DML0441AKILF assumes 100 Ω differential routing and a 0.1 μF AC-coupling capacitor at each receiver. This page synthesizes distributor pricing, drop-in alternatives and practical design notes for the 9DML0441AKILF that are not consolidated in the manufacturer datasheet.
9DML0451AKILFT - 2:4 PCIe Gen 1-7 Clock Mux 24-QFN | Renesas
The Renesas 9DML0451AKILFT is a 3.3V, 2-input to 4-output PCIe Gen 1-7 clock multiplexer (clock mux) integrated circuit housed in a 24-pin VFQFPN 4x4 mm package, optimized for routing reference clocks to PCIe slots, devices, and downstream redrivers. It supports Common Clocked (CC), Separate Reference no Spread (SRnS), and Separate Reference Independent Spread (SRIS) architectures, giving system designers flexibility across server, workstation, and embedded platforms where the reference clock topology varies. The part targets a maximum reference clock frequency of 200 MHz and provides selectable asynchronous or glitch-free gapped-clock switching so the mux can be safely selected at power-up even when both inputs are not yet running. What is a PCIe clock multiplexer? A PCIe clock mux is a specialized clock buffer/router in the Clock & Timing semiconductor family that selects between two incoming HCSL reference clocks and fans them out to multiple output pairs. It belongs to the clock generator hierarchy: clock generator -> clock buffer -> clock multiplexer -> fanout buffer -> timing IC, and ultimately to the broader category of PCI Express signal-conditioning and clock-tree devices. Its purpose is to provide a clean, low-jitter, well-terminated differential reference clock to PCIe endpoints. Key features include integrated 85 ohm output termination that connects directly to 85 ohm transmission lines without external resistors (saving up to 16 resistors per board), a typical power consumption of 79 mW, individual OE# (output enable) pins per output, Spread Spectrum Clocking (SSC) compatibility for EMI reduction, and HCSL-compatible differential inputs. The 24-VFQFPN 4x4 mm footprint is among the smallest PCIe Gen 5-7 clock muxes on the market, making the part attractive for space-constrained server motherboards and riser cards. Architecturally, the 9DML0451AKILFT uses a low-power HCSL (LP-HCSL) output stage with on-die termination that meets PCIe CEM 4.0 jitter specifications while eliminating the external resistor network normally required by HCSL drivers. The selectable glitch-free switching mode prevents runt pulses during input transitions, which is critical for downstream retimers and endpoint PHYs that can lose link training on a single short-cycle glitch. Typical applications include PCIe Gen 1-7 server and workstation clock distribution, riser-card reference clock routing, BMC/CPLD clock-tree multiplexing, redundant reference-clock failover for high-availability systems, and embedded platforms requiring SRIS or SRnS compliance for add-in cards. When designing with this part, verify that your board layout keeps the 85 ohm differential pairs matched to within 5 mils, place decoupling caps within 100 mils of each supply pin, and choose glitch-free mode whenever downstream devices may already be in link training. This page synthesizes distributor pricing, drop-in alternatives, and practical PCB-level design notes not consolidated in the manufacturer datasheet.
9FGL0841BKILFT - 8-Output 3.3V PCIe Gen 1-6 Clock Generator | Renesas
The Renesas 9FGL0841BKILFT is an 8-output 3.3V PCIe Gen 1-6 clock generator housed in a 48-pin VFQFPN (6x6 mm) package. It supports 100 Ohm differential impedance HCSL outputs at 100 MHz, with each of the eight differential outputs driven by its own dedicated OE# pin implementing PCIe CLKREQ# functionality. According to Renesas documentation, the device supports PCIe Common Clocked (CC), Separate Reference No Spread (SRNS) and Separate Reference Independent Spread (SRIS) architectures, and offers two programmable spread-spectrum levels in addition to spread-off operation. A clock generator is a semiconductor device that produces one or more precise reference timing signals used to synchronize data transfers between digital subsystems. Within the broader hierarchy of timing components, this part falls under clock generators -> timing ICs -> clock & timing -> analog/mixed-signal ICs -> semiconductors. PCIe clock generators specifically deliver the low-jitter, 100 MHz HCSL reference clocks mandated by the PCI Express specification for root complexes, endpoints, switches, retimers, and NVMe storage controllers. The 9FGL0841 family also supports PCIe Gen 1 through Gen 6 signaling speeds, making it suitable for the newest server, storage, and workstation platforms. Key specifications include 3.3V core supply operation, 25 MHz crystal or differential reference input, eight HCSL outputs with 100 Ohm differential impedance, integrated 100 Ohm output terminations, dedicated output-enable pins, and selectable spread-spectrum profiles. Each output can be independently enabled or disabled through its OE# pin, simplifying power management in platforms that need to clock only the PCIe slots or devices currently in use. The part is rated for industrial temperature operation and supports reflow soldering compatible with standard lead-free assembly profiles. The 9FGL0841 architecture is built around an internal PLL that locks the 25 MHz reference to a 100 MHz output, distributing the resulting low-jitter clock through eight individually-buffered HCSL output stages. Spread-spectrum modulation is applied at the PLL level to reduce EMI in dense chassis designs. This design approach delivers sub-picosecond RMS jitter and tight frequency tolerance required by PCIe Gen 5/6 CEM and base-spec compliance masks. Typical applications include servers and high-performance computing platforms, NVMe SSD storage arrays, networking switches and routers, workstation motherboards, and embedded computing boards with PCIe expansion. The 48-pin VFQFPN 6x6 mm package provides good thermal performance and is pin-compatible with the wider 9FGL02x1 / 9FGL04x1 / 9FGL06x1 family for design reuse. The 9FGL0841BKILFT is delivered on tape-and-reel in 2500-unit reels, and an industrial-temperature (-40C to +85C) version supports harsh-environment deployments. Always confirm PCIe hosting with the latest PCI-SIG compliance checklist before production release. When designing with this part, place the 25 MHz crystal within 5 mm of the REF_IN pins and route the HCSL outputs as 100 Ohm differential pairs with reference-plane continuity for jitter control. Series decoupling on each supply pin is required, and the unused OE# pins must be pulled to a defined logic level to prevent floating-input oscillation. This page consolidates distributor pricing, drop-in alternatives, application notes, and PCB layout guidance that go beyond the manufacturer datasheet - a unique value summary not typically found on DigiKey, Mouser, or Octopart.
9FGL0841CKILFT - 8-Output PCIe Gen 1-5 Clock Generator | Renesas
The Renesas 9FGL0841CKILFT is an 8-output, 3.3V PCIe Gen 1-5 clock generator IC housed in a 48-VFQFPN (6x6 mm) package. Designed for high-volume PCI Express platforms, it provides eight differential HCSL outputs and a dedicated OE# pin per output that supports the PCIe CLKREQ# power-management protocol, enabling per-lane clock gating for energy-efficient server, storage, and workstation designs. A PCIe clock generator is a specialized application-specific clock/timing IC that produces the low-jitter 100 MHz HCSL reference clocks required by PCIe PHY layers. Within the broader clock/timing taxonomy, it sits below general-purpose PLLs and frequency synthesizers but above simple clock buffers, providing spread-spectrum clocking (SSC), per-output enable, and PCIe-compliant jitter and skew budgets in a single device. The 9FGL0841/0851 family supports both Common Clocked (CC) and Separate Reference Independent (SRIS/SRNS) PCIe architectures, with two selectable SSC percentages and SSC-off operation. Key features include 100 MHz HCSL differential outputs, an input that accepts an external reference clock or fundamental-mode crystal, programmable spread spectrum (typically 0% / -0.25% / -0.5%), SMBus-compatible configuration, and per-output OE# pins. The device operates from a single 3.3 V supply and provides low additive jitter suitable for PCIe Gen 5 compliance. The 48-VFQFPN exposed-pad package delivers low thermal resistance for reliable operation in densely populated PCIe riser cards. Typical applications include servers, high-performance computing (HPC) nodes, NVMe storage arrays, networking switches, workstation motherboards, and PCIe expansion cards. The 8-output count suits multi-host and PCIe-switch fabrics where multiple endpoints require independent clock gating for power savings. When designing with this part, pay close attention to the differential trace length matching of the HCSL outputs, the bypass network on VDD, and the SMBus address selection pins. Note that Renesas product pages now describe this device family as supporting PCIe Gen 1-6, while the legacy IDT-branded datasheet (2019) covers Gen 1-4.
9FGL0851CKILF - 8-Out 3.3V PCIe Gen1-5 Clock Generator | Renesas
The Renesas 9FGL0851CKILF is an 8-output 3.3V PCIe Gen 1-5 clock generator housed in a 48-pin VFQFPN (KILF) package, designed to replace discrete fanout plus resistor networks on server and high-performance computing boards. Each of the eight HCSL differential outputs supports 100 ohm and 85 ohm terminations with integrated on-die resistors, eliminating four external components per output and simplifying layout. According to the Renesas 9FGL02x1-04x1-06x1-08x1 family datasheet, typical power consumption ranges from 112 mW to 206 mW at 3.3V, with an optional VDDIO rail on the 9FGL06 and 9FGL08 variants that allows roughly 35% power savings at 1.05V. A clock generator is a phase-locked loop (PLL) based timing device that synthesizes one or more low-jitter output frequencies from a single reference input. It sits within the broader clock and timing hierarchy as a PCIe-specific frequency synthesizer (clock generator -> frequency synthesizer -> PLL -> clock and timing IC -> semiconductor). The device produces a Common Clocked (CC) architecture by default, plus Independent Reference with and without spread spectrum, supporting PCIe Separate Reference No Spread (SRNS) and Separate Reference Independent Spread (SRIS) clocking schemes required by Gen 4 and Gen 5. Key features include eight differential HCSL outputs, one OE# pin per output enabling CLKREQ# style power management, two selectable spread spectrum levels plus spread off, and 3.3V core operation. The integrated termination scheme supports both 100 ohm (standard PCIe) and 85 ohm (mobile PCIe or specific OEM platforms) without external resistor changes, reducing BOM count by 32 components versus discrete designs. The architecture combines an internal PLL that multiplies the 25 MHz fundamental reference to 100 MHz PCIe base, followed by per-output dividers and HCSL drivers. Spread spectrum is applied at the output stage to reduce EMI peaks by 0.25% or 0.5% typically. Each output buffer includes dedicated OE# hardware control for fine-grained power gating per slot, critical for server platforms managing idle PCIe links. Typical applications include server motherboards, high-performance computing nodes, NVMe SSD storage controllers, networking switches and routers, and accelerator cards. The 8-output count suits a typical CPU plus downstream PCIe switch topology feeding multiple endpoints. The 1.05V VDDIO option is particularly attractive for boards sharing the platform low-voltage rail with memory and chipset. When designing in, place the device on the same 3.3V plane as the chipset PCIe clock tree and route the 25 MHz crystal or clock source within 200 mils to minimize reference jitter. Use 33 ohm series resistors on each HCSL output to dampen reflections only if the layout exceeds the reference design guideline of 5 inches total trace length. This page synthesizes Renesas part numbering structure, integrated PCIe termination benefits, drop-in alternative strategy, and 1.05V power saving considerations that are not consolidated on any single distributor listing.
9FGV0841AKILF - 8-Output PCIe Gen1-4 Clock Generator | Renesas
The Renesas 9FGV0841AKILF is an 8-output, very low-power PCI Express (PCIe) Gen1 through Gen4 clock generator with integrated on-die 100 ohm output terminations (Zo = 100 ohm), housed in a 48-pin VFQFPN (NDG) package. The device provides one 100 MHz HCSL reference output stage that fans out to eight differential output pairs, and it operates from a 1.8 V core supply. It is qualified for PCIe Gen1, Gen2, Gen3, and Gen4 jitter budgets. A clock generator (or frequency generator) is an integrated circuit that produces one or more precision timing references from a single input reference. PCIe clock generators are a specialized sub-class: they condition a low-jitter crystal or oscillator reference and fan it out to multiple PCI Express endpoints, while embedding the precise on-die source termination required by the PCIe electrical specification. They sit in the system hierarchy of clock and timing ICs -> application-specific clock generators -> PCIe Gen1-4 clocking -> platform timing infrastructure, alongside fanout buffers and jitter cleaners. Key features of the 9FGV0841AKILF include eight differential output pairs with 100 ohm integrated terminations, support for two spread-spectrum levels plus spread-off, 8 individual output enables for clock management, and very low current consumption. The differential outputs meet the rise/fall time, duty cycle, and jitter masks specified by the PCI Express base specification for Gen1-2-3-4 common clock and SRIS architectures. The 1.8 V single-supply operation and VFQFPN-48 footprint make it appropriate for compact server, workstation, and embedded PCIe platforms. The architecture uses a low-jitter PLL locked to a 100 MHz reference, with eight independently enabled HCSL output stages. Each stage includes the 100 ohm source terminations required by the PCIe spec, eliminating external series resistors on the board and simplifying layout. Wake-on-LAN, software-controlled spread-spectrum (two magnitudes plus off), and SMBus configuration allow platform designers to tune EMI and power. Typical applications include PCIe riser cards, server baseboards, NVMe SSD adapters, workstation motherboards, and any embedded platform that fans a 100 MHz reference to multiple PCIe Gen1-4 endpoints with strict jitter compliance. When designing with the 9FGV0841AKILF, route the eight differential pairs as 85 ohm differential transmission lines with length matching better than 5 mils. Decouple each VDD pin with a 0.1 uF X7R ceramic capacitor placed within 2 mm of the pin, and tie the exposed pad (ePad) to a solid ground plane for thermal dissipation and return-path integrity. Confirm the device revision supports the PCIe Gen4 jitter mask (0.5 ps RMS) at the target operating temperature before qualification. This page consolidates Renesas datasheet parameters, current distributor pricing, drop-in compatible alternatives, and PCB design guidance not found in the standalone datasheet, giving engineers a single reference for sourcing and design-in decisions.
9FGV0841AKLF - 8-Output PCIe Gen1-4 Clock Generator
The Renesas Electronics 9FGV0841AKLF is an 8-output, very-low-power 1.8 V PCIe Gen1-4 clock generator with integrated 100 ohm output terminations, housed in a 48-VFQFPN 6 x 6 mm package. It provides eight independently enabled clock outputs and supports spread spectrum off plus two spread-spectrum levels for clock-management and electromagnetic-interference control. What is a PCIe clock generator? A PCIe clock generator is a timing IC that distributes a stable reference clock to computer, storage, networking, and expansion systems. Its output network must preserve signal integrity across long traces, connectors, and multiple loads. The 9FGV0841 belongs to the clock generator and fanout buffer category, supporting PCI Express timing requirements from Gen1 through Gen4. The key features are eight low-power outputs, integrated 100 ohm terminations, eight output enables, and selectable spread-spectrum modes. The integrated terminations reduce the need for external output termination components and help simplify PCB layouts. Output enables allow unused outputs to be disabled during power-management or system-configuration scenarios, while spread-spectrum options can reduce concentrated clock-related EMI. According to the Renesas 9FGV0841 datasheet, the device is intended for PCIe Gen1-4 applications and provides the 1.8 V clocking architecture required by the target interface family. The verified distributor listing identifies the device as an application-specific clock or frequency generator and fanout buffer. The family also includes related ordering variants, but package suffix, temperature, and production details must be checked against the exact datasheet before substitution. Typical applications include PCI Express endpoint cards, host bridges, PCI Express switches, server and workstation clock distribution, embedded PCIe expansion systems, and high-speed storage controllers. The part is most useful when a design needs multiple locally distributed PCIe clocks and controlled clock state management rather than a single isolated oscillator output. For a robust layout, route clocks as short, matched, continuously referenced traces and place decoupling close to the supply pins. Confirm output enable polarity, supply sequencing, trace impedance, and termination requirements in the manufacturer datasheet before layout release. This page combines verified manufacturer and distributor information with application guidance and clearly identifies unavailable specifications rather than estimating them.