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ISL8483IP - 5V RS-485/RS-422 Transceiver | Renesas
ISL8483IP

ISL8483IP - 5V RS-485/RS-422 Transceiver | Renesas

Renesas ISL8483IP is a single half-duplex RS-485/RS-422 transceiver operating from a 5 V supply, with selectable low-power high-speed or slew-rate-limited operation. The device combines one transmitter and one receiver in an 8-pin PDIP package and includes separate receiver and transmitter enables plus a low-power shutdown function. Verified distributor data identifies the ISL8483IP as a 250 kbps half-duplex RS-485/RS-422 transceiver with Rx/Tx enables and low-power SHDN. The package is specified as 8-DIP, or 8-PDIP, with a 0.300 inch, 7.62 mm body width. An RS-485/RS-422 transceiver is a balanced-interface interface IC used to connect a logic-level controller to a differential communication bus. RS-422 generally describes a point-to-point, balanced digital interface, while RS-485 supports multipoint bus arrangements and commonly uses transceivers that can disable their drivers when idle. The ISL8483IP belongs to the interface IC hierarchy and is intended for industrial-control, instrumentation, and embedded serial links requiring a 5 V supply and differential noise immunity. The verified data identifies a maximum signaling rate of 250 kbps and offers two operating approaches described as high speed or slew-rate limited. These modes are relevant when a design must balance communication rate against the transition rate of the differential driver. Additional control features named in the source material are the receiver enable, transmitter enable, and low-power shutdown input, allowing the host to manage bus direction and conserve power when communication is inactive. The ISL8483IP uses BiCMOS technology in the Intersil RS-485 and RS-422 product family. Although the provided search results describe the family as meeting both RS-485 and RS-422 standards, detailed limits for differential output voltage, receiver threshold, common-mode range, supply-current behavior, and isolation are not included in the supplied excerpts. Those parameters therefore require confirmation in the manufacturer datasheet before final circuit release. Typical applications include industrial sensor and actuator links, factory automation equipment, building-control systems, laboratory instrumentation, and embedded controllers communicating with remote RS-485 peripherals. The 250 kbps rate is appropriate for moderate-speed control and monitoring networks rather than high-bandwidth data transfer. In a multidrop bus, only one transmitter should normally be active at a time, while the receiver can monitor bus state when its driver is disabled. A key design consideration is the distinction between the PDIP and surface-mount ISL8483 package variants. Cross-reference results explicitly identify ISL8483EIBZ-T and ISL8483EIBZ-T7A as SOIC-8 surface-mount parts, so they are not drop-in replacements for an 8-PDIP board footprint. Before routing a replacement PCB, verify supply voltage, data rate, enable polarity, shutdown behavior, pinout, and transceiver-versus-receiver configuration against the manufacturer datasheet. This page consolidates the verified distributor descriptions, package distinctions, sourcing links, and practical replacement constraints into an engineering-focused view. It also identifies where the supplied evidence is incomplete, avoiding unsupported claims about pin assignments, electrical limits, lifecycle state, pricing, and thermal performance. Those fields should be completed from the authoritative manufacturer datasheet and current authorized distribution records.

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ISL8484IR - 4.5V Dual SPDT Low-RON Switch | Renesas
ISL8484IR

ISL8484IR - 4.5V Dual SPDT Low-RON Switch | Renesas

The Renesas Electronics ISL8484IR is a low-voltage, bidirectional, dual single-pole/double-throw analog switch with an ultra-low ON-resistance, a +1.65 V to +4.5 V single-supply range, and a 10-pin DFN package with an exposed pad. Its specified ON-resistance is 0.29 ohm at a 4.3 V supply, 0.33 ohm at 3.0 V, and 0.55 ohm at 1.8 V. The device contains two independently controlled SPDT switches, allowing one signal or supply path to be routed between two external nodes at a time. Typical on-resistance matching between channels is 0.06 ohm, while ON-resistance flatness across the signal range is 0.03 ohm. An analog switch is a semiconductor device that connects or disconnects an electrical signal path with controlled resistance. In the product hierarchy, the ISL8484IR is an analog switch and multiplexer within the broader interface IC category. Each SPDT configuration provides a common terminal, one normally closed throw, and one normally open throw, making the device useful for signal routing, polarity selection, test-point isolation, and compact analog multiplexing. The defining feature of the ISL8484IR is its low channel resistance across a low-voltage supply range. The manufacturer datasheet also identifies it as a pin-compatible replacement for the MAX4684 and MAX4685. Its low power consumption, specified below 0.45 microwatt in the cited operating conditions, and fast switching behavior make it appropriate for battery-powered and portable equipment where signal-path resistance and energy use both matter. The two independent SPDT switches provide routing flexibility without requiring two separate packages. Matching and flatness characteristics help reduce channel-dependent attenuation and distortion when a design switches between sources or measures multiple nodes. The bidirectional signal path also permits operation in either current direction, although the permitted voltage and current limits must remain within the manufacturer ratings. Typical uses include low-voltage audio routing, sensor selection, test and measurement interfaces, portable instrumentation, and general-purpose power or signal multiplexing. The low 1.65 V minimum supply supports systems operating from a single lithium-cell rail or other low-voltage source. In precision analog paths, engineers should verify the actual ON-resistance, leakage, charge injection, and switching timing under the intended signal amplitude and frequency. The primary design consideration is preserving the exposed-pad thermal and electrical requirements of the 10-DFN package. Place the exposed pad on a PCB thermal-via and ground-plane structure, keep high-current paths physically short, and confirm the selected switch state during power-up. Because the supplied search data does not include the complete pin table, engineers should download the Renesas datasheet before assigning signals to physical pins. This page consolidates the verified manufacturer description, parametric ON-resistance data, operating-voltage range, package information, and cross-reference evidence. It also distinguishes documented drop-in replacements from package or packaging variants that are not true PCB drop-in choices, helping engineers evaluate replacement risk before redesigning a board.

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ISL8484IU - Dual SPDT Low-Voltage Analog Switch | Renesas
ISL8484IU

ISL8484IU - Dual SPDT Low-Voltage Analog Switch | Renesas

Renesas Electronics ISL8484IU is a dual single-pole/double-throw analog switch with a single-supply operating range of +1.65 V to +4.5 V and an ultra-low on-resistance. The device contains two independent SPDT switch circuits in a 10-MSOP package and is designed for low-voltage, low-power signal-routing applications. Its stated on-resistance is 500 mOhm, while the available technical data also identifies 290 mOhm at a 4.3 V supply and 550 mOhm at a 1.8 V supply. An analog switch is an integrated interface circuit that routes electrical signals between terminals under digital control. A dual SPDT switch provides two selectable signal paths per switch section, making it useful for selecting one of two sources, routing a measurement signal, or supporting bidirectional communication. The ISL8484 belongs to the broader hierarchy of analog switches, multiplexers, interface ICs, and semiconductors. The principal feature of the ISL8484IU is its low on-resistance across a low-voltage supply range. Available data lists on-resistance matching between channels as 0.06 Ohm and on-resistance flatness across the signal range as 0.03 Ohm. Power consumption is specified below 0.45 uW, while fast switching action is available when the supply is 4.3 V. These characteristics suit compact equipment operating from a single low-voltage rail. The device uses separate select and common terminals for each SPDT section. The 10-MSOP surface-mount package is offered in a 0.118-inch by 3.00 mm width format. The supplied data identifies the industrial temperature grade and 10 terminals. A publicly verified pin-number-to-pin-name diagram was not present in the supplied results, so the exact pinout is intentionally left unassigned rather than inferred from generic package conventions. Typical uses include low-voltage audio routing, sensor and measurement-signal selection, portable test equipment, communication-signal multiplexing, and compact industrial interfaces. For bidirectional signal paths, the control and common terminals must be operated within the voltage limits specified by the manufacturer datasheet. Care is required when switching powered signals because the exact overvoltage and break-before-make behavior should be confirmed from the current datasheet. A primary design consideration is the relationship between supply voltage and switch resistance. Lower supply operation provides less headroom for the internal switch and corresponds to higher resistance, while operation near 4.5 V provides the lower-resistance behavior listed in the available data. PCB layout should keep routing short and provide a stable return path, especially when the switch handles high-bandwidth or low-amplitude signals. This product page consolidates the verified manufacturer description, distributor inventory information, package details, switch characteristics, cross-reference findings, and practical engineering guidance. It also separates verified facts from unavailable values so designers can identify the target part quickly while recognizing which parameters still require confirmation in the current manufacturer datasheet.

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ISL8484IUZ - Dual SPDT Analog Switch, 0.29 Ohm | Renesas
ISL8484IUZ

ISL8484IUZ - Dual SPDT Analog Switch, 0.29 Ohm | Renesas

The Renesas Electronics ISL8484IUZ is a dual single-pole/double-throw (SPDT) analog switch with 0.29 ohm ON-resistance at V+ = 4.3 V, operating from a single +1.65 V to +4.5 V supply, and packaged in a 10-lead MSOP (10-TFSOP). Each switch routes one common node to one of two throws, giving two independent 2:1 muxes in one IC. An analog switch (also called a mux or multiplexer) is an integrated circuit that steers a signal path between multiple sources and destinations under digital control. It belongs to the signal-path hierarchy: analog switch -> multiplexer -> interface IC -> integrated circuit. Unlike a relay or mechanical contactor, it switches in nanoseconds, draws micro-watts of power, and introduces only a small, well-characterized series resistance plus a few picofarads of parasitic capacitance. Key features of the ISL8484IUZ include very low ON-resistance that stays flat across the signal range, excellent channel-to-channel rON matching of 0.06 ohm, low power consumption below 0.45 microwatts, fast switching of 40 ns tON and 20 ns tOFF at V+ = 4.3 V, guaranteed break-before-make behavior, and an HBM ESD rating of greater than 8 kV. The manufacturer also documents the ISL8484 family as a pin-compatible replacement for the MAX4684 and MAX4685. Because ON-resistance is only 0.29 ohm and rON flatness across the signal range is 0.03 ohm, the device behaves almost like a shorted trace when closed. This makes it well suited to routing low-frequency analog signals, sensor outputs, reference voltages, and baseband paths where added resistance would degrade accuracy. The very low switching energy keeps the switch usable in battery-powered and portable equipment. Typical uses include audio and headphone signal routing, portable test equipment, battery-powered sensor interfaces, USB and peripheral routing in low-voltage designs, and general-purpose analog multiplexing in consumer and industrial systems running from 1.8 V to 3.3 V rails. The key design consideration is supply headroom: the switch operates down to +1.65 V, but ON-resistance rises sharply as V+ falls (0.55 ohm at 1.8 V versus 0.29 ohm at 4.3 V). Budget the signal-path error against the highest rail in your system, and treat the control pins as logic inputs referenced to the same V+ supply.

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ISL8485CB - 5V 5Mbps RS-485/RS-422 Transceiver | Renesas
ISL8485CB

ISL8485CB - 5V 5Mbps RS-485/RS-422 Transceiver | Renesas

The Renesas Electronics ISL8485CB is a 5V, low-power, high-speed RS-485/RS-422 half-duplex transceiver in an 8-pin SOIC package. It combines one driver and one receiver in a single integrated circuit for balanced industrial communication links, with a verified data rate of up to 5Mbps. The device operates from a single 5V supply and supports both high-speed and slew-rate-limited communication modes. Its 8-SOIC package is suitable for conventional surface-mount PCB assembly, while its half-duplex architecture allows one transceiver to share a bidirectional bus with controlled driver enable and receiver enable functions. An RS-485/RS-422 transceiver is an interface IC that converts logic-level digital signals into balanced differential signals and receives differential signals back into CMOS-compatible logic levels. The ISL8485CB belongs to the transceiver hierarchy of interface ICs, where RS-422 provides a balanced point-to-point or multidrop communication format and RS-485 supports longer, noise-tolerant multipoint buses. The part is intended for systems that require compact, reliable differential signaling rather than a single-ended communications interface. The primary electrical attributes include a 5V supply, a 5Mbps data rate, one integrated driver, and one integrated receiver. The manufacturer family documentation identifies the ISL8485 as a CMOS 5V-powered RS-485/RS-422 transceiver family with low power consumption and both high-speed and slew-rate-limited configurations. The verified distributor description identifies the CB ordering code as an 8-SOIC, while the manufacturer document covers the related ISL8485, ISL8490, and ISL8491 family. Typical uses include industrial control systems, factory automation, instrumentation, building automation, and embedded equipment connected through a balanced bus. In a half-duplex network, the transceiver converts transmitted data into differential bus voltage and receives remote data when the driver is disabled. The 5Mbps capability supports high-rate factory communication, while slew-rate limiting can reduce reflected signaling on longer or less controlled cables. Designers should verify the complete pinout, enable polarity, driver and receiver disable behavior, termination requirements, and electrical limits against the Renesas datasheet before layout. RS-485 buses normally need termination at both physical ends, biasing to provide a defined idle state, and protection appropriate to the installation environment. The 8-SOIC package requires thermal and layout attention at elevated data rates or long-cable installations.

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ISL8485CP - 5V RS-485/RS-422 Transceiver | Renesas
ISL8485CP

ISL8485CP - 5V RS-485/RS-422 Transceiver | Renesas

Renesas ISL8485CP is a 5 V, low-power, half-duplex RS-485 and RS-422 interface transceiver with one driver and one receiver, supplied in an 8-pin through-hole PDIP package. It is designed for balanced industrial communication links where a single transceiver must support both differential transmit and receive operation. The verified distributor data identifies the device as a 1/1 RS-422 and RS-485 transceiver in an 8-PDIP package. A transceiver combines a differential line driver and differential receiver into one interface component. In the transmit direction, the driver converts a logic-level signal into a balanced differential voltage across a twisted-pair bus; in the receive direction, the receiver converts the differential bus voltage back into a logic-level signal. RS-422 commonly supports point-to-point, balanced signaling, while RS-485 permits multiple drivers and receivers on a shared bus when the system implements the required addressing, biasing, and contention controls. The ISL8485CP family is identified as a low-power 5 V RS-485/RS-422 solution with options described by the manufacturer as high-speed or slew-rate-limited. This distinction is important when designing a bus: slew-rate control can reduce high-frequency ringing and electromagnetic interference, while a high-speed configuration can improve propagation delay. The exact speed, slew-rate, output-current, and receiver-threshold limits are not present in the supplied verified excerpts and must be confirmed in the manufacturer datasheet before final circuit design. The device is implemented in an 8-PDIP package for through-hole assembly rather than a compact surface-mount land pattern. This makes it suitable for industrial controllers, data-acquisition equipment, instrumentation, and legacy interface boards where DIP soldering, prototyping, or through-hole serviceability is preferred. The balanced interface also helps reject common-mode noise when the transmitter and receiver reference a common signal ground and the cable routing is controlled. Typical applications include factory-floor serial links, industrial control modules, remote sensor interfaces, laboratory equipment, and building automation equipment. Designers should confirm the device's exact drive strength, receiver thresholds, data rate, enable or shutdown behavior, and bus termination requirements from the full datasheet. They should also verify whether a fail-safe receiver, ESD rating, slew-rate selection, or automotive qualification is required for the target environment. This page combines verified distributor availability, package information, pricing data, source links, and replacement analysis with practical RS-485 design guidance. It deliberately distinguishes confirmed facts from parameters that still require datasheet verification, helping engineers evaluate the ISL8485CP without mistaking incomplete web snippets for complete technical specifications.

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ISL8485IB - 5Mbps RS-485/422 Transceiver | Renesas
ISL8485IB

ISL8485IB - 5Mbps RS-485/422 Transceiver | Renesas

Renesas Electronics ISL8485IB is a single half-duplex RS-485/RS-422 transceiver with one driver and one receiver, a maximum data rate of 5 Mbps, and a 5 V supply in an 8-pin SOIC package. The ISL8485IB uses BiCMOS technology and is specified for 4.5 V to 5.5 V power supplies, including the 10% supply tolerance identified on the Renesas product page. Its industrial temperature range extends from -40°C to +85°C. An RS-485/RS-422 transceiver is a differential communications interface IC that converts logic-level transmit and receive signals into balanced, noise-immune bus signals. The ISL8485 family supports both RS-485 half-duplex operation and RS-422 balanced operation. The ISL8485 configuration multiplexes its driver output and receiver input onto the same pair of bus terminals, allowing a compact eight-pin implementation. The principal features include a 5 Mbps maximum data rate, low-power BiCMOS construction, operation from a nominal 5 V rail, and a single-unit-load RS-485 bus interface. Half-duplex operation requires the design to control the driver-enable and receiver-enable functions so that the transmitter is disabled when the bus is not being driven. These characteristics make the device appropriate for industrial data links, instrumentation, factory equipment, and point-to-point or multidrop balanced communication. The ISL8485IB is one of three related devices: the ISL8485 provides half-duplex multiplexing, while the ISL8490 and ISL8491 provide separate receive and transmit paths for full-duplex applications. The Renesas ISL8485, ISL8490, and ISL8491 datasheet identifies these architectural differences explicitly. Because bus topology and enable logic affect protocol behavior, an existing PCB should be checked for pin functions before selecting a related family member. Typical installations include RS-485 industrial sensor networks, RS-422 controller-to-peripheral links, building-control equipment, and data-acquisition systems. The 5 Mbps capability supports faster communication than legacy low-speed RS-485 links, while the differential interface helps reject common-mode noise when the transceiver is used with correctly terminated cabling. Designers should verify the eight-pin pinout, supply decoupling, driver-enable sequencing, bus termination, and protection requirements against the manufacturer datasheet. Differential routing should use a controlled-impedance layout where practical, and the unused bus terminals must be handled according to the applicable RS-485 or RS-422 configuration. This page consolidates the verified Renesas and distributor information for the ISL8485IB, documents pin-compatible alternatives with their differences, and provides practical interface-design guidance that is not available from a distributor listing alone.

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ISL8485IP - 5Mbps RS-485/RS-422 Transceiver | Renesas
ISL8485IP

ISL8485IP - 5Mbps RS-485/RS-422 Transceiver | Renesas

The Renesas ISL8485IP is a 5V, low-power, half-duplex RS-485/RS-422 transceiver rated for data rates up to 5Mbps and supplied in an 8-pin DIP package. It provides one balanced transceiver interface for bidirectional multipoint data communication, places one unit load on an RS-485 bus, and operates from a supply range of 4.5V to 5.5V. The device is intended for industrial communication links requiring either high-speed operation or controlled slew rates. An RS-485/RS-422 transceiver is an interface IC that converts digital logic-level signals into differential signals for balanced wired communication and converts received differential signals back into logic levels. RS-422 supports point-to-point balanced links, while RS-485 permits multipoint buses and driver-enable control. The ISL8485IP belongs to the transceiver hierarchy within interface ICs and combines transmitter, receiver, bus-enable control, and protection functions in one package. Key features include a 5Mbps maximum data rate, 4.5V to 5.5V supply tolerance, one-unit-load bus loading, and support for both RS-485 and RS-422 signaling. The 8-pin DIP package is suitable for conventional through-hole assembly, prototyping, repair, and industrial control equipment. Its half-duplex arrangement allows the same differential pair to transmit and receive, although external direction-control logic is normally required. The BiCMOS architecture combines bipolar and CMOS characteristics to provide low-power operation with high data-rate capability. According to the Renesas ISL8485 family information, the ISL8485, ISL8490, and ISL8491 devices are 5V-powered single transceivers that meet RS-485 and RS-422 standards. The family supports supply voltages with 10% tolerance and presents one unit load to the RS-485 bus, helping control loading when multiple nodes share a communication line. Typical applications include industrial factory automation, programmable-logic-controller communication, building-control networks, instrumentation links, and embedded serial-interface equipment. In these systems, the transceiver serves as the physical-layer interface between a controller UART or logic port and a balanced RS-485 or RS-422 cable. Its 5Mbps capability supports high-speed equipment links, while slew-rate-controlled variants in the broader family can be useful where lower EMI is the priority. PCB design should preserve the differential signal path and provide controlled termination and biasing appropriate to the selected RS-485 or RS-422 topology. Keep the transceiver close to the connector, route the differential pair as a coupled pair, and place termination components where they can be configured for the intended network. The maximum 5.5V supply is especially important in industrial systems because transients and supply tolerances must remain within the device rating. This product page combines verified distributor identification, package and interface details, family-level electrical characteristics, alternative sourcing information, and application-specific engineering guidance. It also distinguishes explicitly verified facts from parameters that require confirmation from the manufacturer datasheet before schematic release or production qualification.

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ISL8487IB - 250 kbps RS-485/422 Transceiver | Renesas
ISL8487IB

ISL8487IB - 250 kbps RS-485/422 Transceiver | Renesas

The Renesas Electronics ISL8487IB is a 5 V, single-channel half-duplex RS-485/RS-422 interface transceiver with a 250 kbps data rate, 1/4 unit load, and an 8-pin SOIC package. It combines one driver and one receiver in a fractional-unit-load design intended for balanced industrial communication links where the number of connected nodes is important. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into differential bus signals and converts received differential signals back into digital logic. Positioned within the hierarchy of transceiver, communication interface, interface IC, and semiconductor categories, the ISL8487IB supports RS-485 and RS-422 networks while presenting a lower bus loading than a one-unit-load device. The ISL8487IB operates from a 5 V supply and presents a 1/4 unit load, allowing up to 128 transceivers on a compliant RS-485 bus. Its maximum data rate is 250 kbps, and the listed receiver hysteresis is 70 mV. The 8-SOIC surface-mount package measures approximately 0.154 inches, or 3.90 mm, in width and supports conventional board-assembly and inspection processes. Because the device is a half-duplex transceiver, the receiver and driver share the bus path and direction is controlled by the DE and RE inputs. This architecture suits point-to-point links as well as multidrop buses in which multiple nodes may communicate under a token-passing or polled protocol. The fractional unit load reduces input impedance loading compared with a standard one-unit-load transceiver, improving scalability without requiring an alternative physical bus topology. Typical applications include industrial process monitoring, factory automation, remote meter reading, building controls, instrumentation, and general-purpose RS-485 or RS-422 links. The 250 kbps rate is suitable for supervisory communications and moderate-speed data transfer, while the 1/4 unit load is especially useful when several nodes must share the same twisted-pair bus. Because the transceiver is not galvanically isolated, applications with large ground-potential differences may require an external isolation strategy. Designers should verify termination, biasing, differential routing, and protection against the electrical environment of the cable. The differential pair should be routed as a controlled-impedance pair where practical, and the transceiver should be placed close to the connector to minimize unprotected trace exposure. Supply decoupling and grounding must follow the manufacturer datasheet recommendations. This page combines verified distributor specifications, lifecycle information, source-linked pricing, package details, application guidance, and defensible same-footprint alternatives. It also distinguishes confirmed data from parameters not present in the supplied source material, helping engineers evaluate the obsolete ISL8487IB without assuming unverified electrical characteristics.

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ISL8487IP - 5V Half-Duplex RS-485/RS-422 Transceiver | Renesas
ISL8487IP

ISL8487IP - 5V Half-Duplex RS-485/RS-422 Transceiver | Renesas

Renesas ISL8487IP is a 5 V, half-duplex RS-485/RS-422 interface transceiver with one transmitter and one receiver in an 8-pin PDIP package. It supports a 1/8-unit-load receiver characteristic, low-power operation, driver-enable and receiver-enable control, and a low-power shutdown function. These characteristics make it suitable for bidirectional serial-data links that require both RS-485 and RS-422-compatible signaling without a separate supply rail for the interface. An RS-485/RS-422 transceiver is a differential interface IC that converts logic-level data into balanced differential signals and converts incoming differential signals back into receiver-compatible logic. Within the broader hierarchy, it is a transceiver interface IC, a wired-communication interface, and part of the broader semiconductor and industrial-control ecosystem. Its half-duplex architecture allows a pair of devices to share the same differential pair, although only one transmitter should drive the bus at a time. The ISL8487IP provides a 1/8-unit-load receiver, allowing multiple nodes to share a bus more effectively than a one-unit-load receiver. Its 5 V supply, low-power shutdown, separate transmitter and receiver enables, and selectable high-speed or slew-rate-limited operation give the designer several ways to balance throughput, EMI control, and power consumption. The transmitter-enable and receiver-enable inputs also support orderly bus-direction control in half-duplex equipment. According to the manufacturer datasheet, the device uses fractional-unit-load BiCMOS transceiver technology intended for balanced RS-485 and RS-422 networks. The slew-rate-limit option reduces the rate of change on driver output edges, which can help control high-frequency ringing and electromagnetic emissions. Conversely, the high-speed mode is intended for links where maximum communication rate is more important than edge-rate control. Exact propagation-delay, data-rate, differential-output, and current-limit values were not present in the supplied web data. Typical uses include industrial equipment links, building-control interfaces, instrumentation buses, data-acquisition systems, and host-controller communication ports. In a half-duplex system, the transceiver can connect a controller to a multidrop field bus while logic-controlled enables determine whether the node transmits or receives. The low-power shutdown function is useful when a connected module must reduce current consumption while preserving a stable local bus connection. Designers should verify the exact recommended termination, biasing, common-mode range, and decoupling requirements in the manufacturer datasheet before release. Differential pairs should be routed with continuous references and matched spacing, while a slew-rate-limited mode may be preferable in cables or cabinets exposed to significant EMI. The 8-pin PDIP package also requires adequate spacing around the leads for soldering and inspection.

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ISL8488IB - 250kbps Full-Duplex RS-485/422 | Renesas
ISL8488IB

ISL8488IB - 250kbps Full-Duplex RS-485/422 | Renesas

Renesas Electronics ISL8488IB is a 5V, full-duplex RS-485 and RS-422 transceiver capable of operation at 250kbps in an 8-pin SOIC package. The integrated interface IC combines one transmitter and one receiver for bidirectional point-to-point or multipoint serial links, while its slew-rate-limited driver helps reduce electromagnetic interference and ringing on inadequately terminated lines. An RS-485 transceiver is a differential communications interface IC used to connect a controller, programmable logic controller, sensor, or industrial endpoint to a balanced serial bus. RS-485 is a physical-layer standard suited to noisy industrial environments and longer cable runs, while RS-422 provides compatible differential signaling for point-to-point links. The ISL8488IB occupies the interface-IC hierarchy alongside RS-232 transceivers, isolated transceivers, and CAN controllers, but it operates with differential RS-485/RS-422 signaling rather than single-ended RS-232. The verified device data identifies a 5V supply, a 250kbps maximum signaling rate, full-duplex operation, slew-rate-limited drive, low-power operation, and the absence of separate receiver-enable and transmitter-enable controls. These features make the device appropriate for industrial and commercial systems where a compact, always-enabled full-duplex interface is preferred. The 8-SOIC format also supports conventional surface-mount PCB assembly and broad availability through distributors. The full-duplex arrangement separates the differential driver and receiver paths, allowing simultaneous transmission and reception. The slew-rate-limited driver is particularly useful where long cables, branch stubs, imperfect terminations, or reflected signals could otherwise produce unwanted EMI or excessive edge ringing. The supplied search evidence does not provide a verified common-mode range, receiver sensitivity, fail-safe behavior, bus loading, or propagation-delay distribution, so those values should be confirmed from the complete manufacturer datasheet before release. Typical uses include industrial controller links, factory automation equipment, building-control systems, instrumentation, telecom equipment, and embedded serial links where RS-485 or RS-422 is already selected. Because the part has no separate RX/TX enable inputs, the attached controller must handle bus-direction control elsewhere or the transceiver must remain in its continuously enabled interface configuration. The 250kbps data rate also places the device below the throughput normally associated with modern high-speed CAN or differential Ethernet interfaces. For a new PCB, preserve the manufacturer-recommended bypass capacitance, connect the differential pair as a controlled impedance or tightly matched pair, and provide termination only where the cable topology requires it. Avoid placing long unprotected stubs on the bus. Designers should also verify ground potential differences between connected systems because RS-485 relies on the common-mode voltage remaining within the device's supported operating range. This product record combines verified distributor listings, the manufacturer-family datasheet, available cross-reference evidence, packaging details, interface-use guidance, and a conservative same-footprint replacement assessment. It also distinguishes confirmed specifications from unavailable parameters so procurement and engineering teams can identify which values still require confirmation from the full datasheet.

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ISL8488IP - 250kbps Full-Duplex RS-485/RS-422 | Renesas
ISL8488IP

ISL8488IP - 250kbps Full-Duplex RS-485/RS-422 | Renesas

The Renesas Electronics ISL8488IP is a 5 V, low-power, full-duplex RS-485/RS-422 transceiver operating at up to 250 kbps, supplied in an 8-pin plastic DIP package. The device is designed for bidirectional industrial data links and combines a transmitter, receiver, and bus-driver/receiver functions without separate receive or transmit enable pins. Its slew-rate-limited operation helps reduce unwanted high-frequency signal content on longer RS-485 networks. An RS-485/RS-422 transceiver is an interface IC that converts logic-level digital signals into differential bus voltages and converts received differential bus signals back into CMOS-compatible logic. In the broader electronics hierarchy, it is an interface IC within the transceiver family, designed for reliable point-to-point or multipoint communication over cables and industrial backplanes. The ISL8488IP supports both RS-485 and RS-422 system requirements while operating from a single 5 V supply. Key verified characteristics include a 250 kbps maximum signaling rate, full-duplex operation, 5 V supply operation, integrated RS-485/RS-422 transceiver functionality, and slew-rate-limited signaling. The absence of dedicated transmit and receive enable inputs is useful in applications where the interface direction is fixed or managed elsewhere. Its low-power design is intended for embedded industrial, communications, instrumentation, and control systems where reduced energy use and controlled edge rates are important. The device combines differential bus outputs with a receive path designed for data-link applications. Because the ISL8488IP is slew-rate limited, engineers should evaluate its 250 kbps rating against protocol timing, cable length, termination requirements, and the waveform behavior of the connected system. The 8-PDIP package favors through-hole construction, thermal management through the printed-circuit board, and applications that favor a conventional DIP footprint over a surface-mount package. Typical uses include industrial controller links, remote instrumentation, point-to-point communications equipment, factory data acquisition, and embedded systems exchanging commands between a controller and a remote peripheral. Full-duplex operation can simplify systems that continuously require independent transmit and receive paths. The lack of separate enable pins also reduces external control logic, although it may not suit designs that require direction switching or controlled bus tri-state behavior. For a new layout, place the transceiver near the connector and bus entry, route the differential pair as a tightly coupled pair, apply the appropriate termination and protection network, and maintain a continuous ground reference where required by the communication standard. Check the manufacturer datasheet for exact receiver thresholds, driver limits, supply-current values, temperature limits, and absolute maximum ratings before releasing production hardware. This page combines the verified 250 kbps, 5 V, full-duplex, RS-485/RS-422, slew-limited, 8-PDIP, and no-enable characteristics with practical integration guidance. It also distinguishes verified facts from unavailable datasheet details so procurement and engineering teams can identify what must be checked in the full manufacturer documentation.

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ISL8489IB - 250kbps RS-485/422 Transceiver | Renesas
ISL8489IB

ISL8489IB - 250kbps RS-485/422 Transceiver | Renesas

The Renesas Electronics ISL8489IB is a 5 V, low-power, full-duplex RS-485/RS-422 transceiver capable of operation at 250 kbps, packaged in a 14-pin SOIC. It combines one driver and one receiver in a single integrated circuit and provides both high-speed and slew-rate-limited operation. The device does not include separate receiver-enable or transmitter-enable controls, making it suitable for continuously enabled balanced communication links. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential transmissions and converts received differential signals back into logic levels. These balanced interfaces belong to the broader wired-communication hierarchy and are commonly used where noise immunity, signal integrity, and reliable communication over longer cables are more important than single-ended signaling. The verified product information identifies a 5 V supply, low power consumption, full-duplex operation, support for both RS-485 and RS-422, and data rates up to 250 kbps. Its 14-pin SOIC package supports conventional surface-mount PCB assembly. Because the device lacks separate RX and TX enable pins, it is particularly appropriate for designs that keep both directions of the balanced interface continuously active. The ISL8489 family is described by the manufacturer as a BiCMOS 5 V single-transceiver solution designed for RS-485 and RS-422 balanced communication. Its low-power architecture supports equipment in which multiple interface channels may be present. High-speed or slew-rate-limited operation gives designers a choice according to cable length, topology, and signal-integrity requirements, although exact edge-rate and propagation-delay limits must be confirmed in the manufacturer datasheet. Typical uses include industrial automation links, building-automation equipment, instrumentation, motor-control systems, and industrial data networks. The device can also support point-to-point balanced links where continuous full-duplex operation is preferred. Companion interface devices such as the SN65HVD06D, SP485ECN-L, and SN75174DWR may be relevant when designing connected RS-485 networks or comparing transceiver families. A key design consideration is the absence of independent transmit and receive enables. PCB designers should therefore account for continuous driver activity and verify the driver state, bus termination, protection strategy, and cable topology against the system operating requirements. Decoupling, grounding, and differential-routing practices remain essential for reliable operation on externally accessible industrial buses. This page consolidates verified distributor listings, exact interface and packaging information, sourcing data, comparison fields, and practical design guidance. Where detailed electrical limits or a verified pin mapping were not present in the supplied source data, the missing information is explicitly identified rather than estimated.

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ISL8489IP - 5V 250kbps Full-Duplex RS-485/422 | Renesas
ISL8489IP

ISL8489IP - 5V 250kbps Full-Duplex RS-485/422 | Renesas

Renesas Electronics ISL8489IP is a 5 V, low-power, full-duplex RS-485/RS-422 transceiver capable of operation at 250 kbps and packaged in a 14-pin PDIP. The device combines one driver and one receiver in a single package, supports balanced differential communications, and provides a slew-rate-limited alternative for systems that require reduced signal-edge velocity. Its operating characteristics are suited to industrial, instrumentation, communications, and embedded data-acquisition equipment that must connect a host or controller to a balanced bus. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential transmissions and converts received differential signals back into logic levels. RS-485 supports multipoint bus communication over long cable runs, while RS-422 commonly supports point-to-point and one-driver topologies. A full-duplex transceiver provides separate paths for transmitting and receiving, unlike half-duplex designs that share a bus and require direction-control logic. The ISL8489IP therefore fits designs that need simultaneous bidirectional communication without sharing a physical signal pair. Key verified features include a 5 V supply requirement, a maximum signaling rate of 250 kbps, full-duplex operation, support for both RS-485 and RS-422, low-power operation, and a slew-rate-limited operating option. The 14-pin PDIP package also provides through-hole compatibility for equipment requiring sockets, prototyping, or manually assembled industrial control boards. The indexed descriptions do not specify separate receiver-enable or transmitter-enable controls, indicating that this version is intended for continuous full-duplex operation. The transceiver architecture provides differential signaling, which is valuable in environments containing industrial machinery, switching supplies, and long interconnects. Differential voltage is measured between the two conductors of a pair rather than relative to ground, improving noise immunity on the receive side. The 250 kbps rate is appropriate for low-to-moderate-speed control and monitoring links where higher signaling rates are unnecessary. The slew-rate-limited behavior can help reduce edge-related ringing and electromagnetic interference when implemented with a correctly terminated network. Typical applications include industrial sensor and actuator networks, factory equipment links, building-control interfaces, laboratory instrumentation, point-to-point data links, and RS-422-compatible control systems. In these systems, the transceiver can connect a UART or microcontroller serial port to a balanced bus. Designers should still verify cable length, topology, grounding, termination, and logic-level compatibility against the complete system requirements before production release. A key design consideration is that the 14-pin PDIP package is not as compact as a surface-mount transceiver. It nevertheless simplifies through-hole construction and socket-based maintenance. The principal engineering trade-off is between 250 kbps operation, low power, full-duplex behavior, and the practical size and assembly requirements of a 14-pin through-hole package. This page consolidates the verified distributor and manufacturer-datasheet indexing information for the ISL8489IP with product-specific engineering guidance, specification gaps, and a transparent replacement assessment. It does not infer unseen electrical limits or substitute candidates whose pin compatibility has not been demonstrated.

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ISL8490IB - 5V Low-Power RS-485/RS-422 Transceiver | Renesas
ISL8490IB

ISL8490IB - 5V Low-Power RS-485/RS-422 Transceiver | Renesas

Renesas ISL8490IB is a 5V, low-power RS-485/RS-422 interface transceiver packaged in an 8-pin SOIC. It is designed for balanced serial data links that require the physical signaling characteristics of both RS-485 and RS-422 interfaces. The verified source material identifies the ISL8490 as a single transceiver supporting high-speed operation or slew-rate-limited operation, allowing it to suit point-to-point RS-422 links as well as multipoint RS-485 networks when used with appropriate bus termination and biasing. Its interface role places it within the transceiver and line-driver hierarchy of communication interface ICs. An RS-485 transceiver converts logic-level digital information into differential signals suitable for balanced industrial communication cables. Differential signaling provides resistance to common-mode noise and allows communication over longer cable runs than a single-ended interface. An RS-422 transceiver similarly uses differential signaling, normally in a point-to-point topology. The ISL8490IB therefore serves as an interface between a digital controller or host and physical copper wiring while placing the high-voltage, high-current bus activity on the transceiver side of the circuit. The principal verified feature is its 5V supply operation. This places it among low-voltage CMOS interface devices intended for systems with compatible digital logic rails. The part is described as low power and as supporting either high-speed or slew-rate-limited communication. High-speed operation prioritizes data throughput, while slew-rate limiting reduces transition-edge energy and can help control electromagnetic interference and ringing on slower networks. Exact data-rate, supply-current, differential-output, input-threshold, and temperature-range values must be confirmed in the manufacturer datasheet before a design is released. Typical uses include industrial RS-485 links, point-to-point RS-422 interconnects, instrumentation, factory automation, building controls, and embedded communication networks. In each case, the transceiver is placed between the controller UART or logic interface and the A/B differential pair. Appropriate cable routing, common-mode grounding, surge protection, termination, and fail-safe biasing remain important parts of the complete interface. Designers should preserve the exact pin mapping and verify the required driver-enable, receiver-enable, termination, and exposed-pad details against the ISL8490 manufacturer datasheet. This page consolidates verified product identity, package information, source links, application guidance, and engineering considerations that are not presented together on a basic distributor listing.

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ISL8490IP - 5Mbps RS-485/RS-422 Transceiver | Renesas
ISL8490IP

ISL8490IP - 5Mbps RS-485/RS-422 Transceiver | Renesas

The Renesas Electronics ISL8490IP is a 5 V, low-power, full-duplex RS-485 and RS-422 interface transceiver with one driver and one receiver, a maximum data rate of 5 Mbps, and an 8-pin PDIP package. The device supports both high-speed RS-485 communication and RS-422 point-to-point links, while its separate receiver and driver enable paths provide flexibility for half-duplex control through the DE and RE inputs. Its operating-temperature range is -40°C to +85°C, making it suitable for industrial and commercial equipment requiring a through-hole interface solution. A transceiver is an interface IC that converts digital logic signals into balanced differential signals for reliable communication over noisy or long cable runs. In the hierarchy, the ISL8490IP is a line transceiver, a type of interface IC and communications semiconductor. RS-485 supports multiple drivers and receivers on a shared bus, whereas RS-422 commonly uses a dedicated driver and receiver for point-to-point or multidrop networks. This transceiver supports both protocols and therefore provides a useful interface between CMOS/TTL logic and balanced cabling. The verified headline specifications are a 5 V supply, 5 Mbps maximum data rate, 70 mV receiver hysteresis, 1 driver, 1 receiver, full-duplex operation, and support for RS-422 and RS-485. These parameters place the part in the low-power, high-speed or slew-rate-limited transceiver category described by the manufacturer documentation. The 8-pin PDIP format also permits conventional through-hole PCB assembly rather than requiring a fine-pitch surface-mount land pattern. Technically, the balanced driver and receiver provide noise immunity over longer interconnects than ordinary single-ended logic. Receiver hysteresis helps distinguish signaling states in the presence of noise, while the 5 Mbps capability supports communication rates beyond the slow speeds commonly used by legacy RS-485 systems. Because the exact input capacitance, output timing, supply-current limits, and slew-rate settings are not included in the supplied verified excerpts, design engineers should confirm them in the manufacturer datasheet before finalizing timing, termination, and decoupling. Typical uses include industrial controllers, building automation equipment, data acquisition systems, instrumentation, industrial networking equipment, and embedded control links. For an RS-485 bus, the circuit requires suitable line termination and biasing. For RS-422, driver and receiver connections should follow the source and destination topology specified by the system architecture rather than being treated as a multi-drop RS-485 bus. The principal design consideration is signal integrity at 5 Mbps. Layout should minimize the distance between the transceiver, protection devices, connector, and differential pair, while keeping the two conductors of each balanced pair closely coupled. Decoupling close to the supply pin, controlled ground return paths, and appropriate surge protection help maintain reliable operation in industrial environments. This page consolidates the verified distributor and manufacturer-document information with lifecycle status, procurement guidance, application fit, package details, and honest replacement limitations. It distinguishes confirmed facts from specifications that still require verification from the full Renesas datasheet.

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ISL8491IB - 5V RS-485/RS-422 Transceiver | Renesas
ISL8491IB

ISL8491IB - 5V RS-485/RS-422 Transceiver | Renesas

Renesas Electronics ISL8491IB is a 5V, low-power, full-duplex RS-485/RS-422 transceiver integrated circuit in a 14-pin SOIC package. It combines one driver and one receiver in a single balanced-communications device, providing the core physical-layer functions required for point-to-point RS-422 links and multipoint RS-485 buses. The verified manufacturer and distributor records identify the device as a 14-SOIC, full-duplex RS-485/RS-422 transceiver with high-speed or slew-rate-limited operation. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential line signals and reconstructs logic-level data from those differential signals. The differential signaling belongs to the transceiver class within interface ICs, data communications, and the broader semiconductor hierarchy. Balanced operation improves noise immunity by deriving the received state from the voltage difference between two conductors rather than relying on a signal measured relative to ground alone. The principal identified features of the ISL8491IB are its 5V CMOS-style supply operation, low-power architecture, full-duplex configuration, and support for both RS-485 and RS-422 communication standards. Because it contains one transmitter and one receiver, the part can support simultaneous transmit and receive paths when the host or controller provides separate request and data-bus signals. The verified distributor description also identifies variants capable of high-speed or slew-rate-limited operation, allowing engineers to compare communication behavior and system timing requirements. The ISL8491IB is suitable for industrial data links, industrial automation equipment, instrumentation, building-control networks, and embedded systems that exchange data over balanced copper cabling. Its 14-pin SOIC package supports conventional surface-mount PCB assembly, while the full-duplex arrangement avoids sharing one physical pair between opposing directions. Designers must still provide suitable logic interfacing, termination, biasing, grounding, and protection appropriate to the cable length, data rate, and industrial environment. A critical design consideration is that the transceiver's communication mode and electrical settings must match the network topology. RS-422 generally supports a point-to-point driver relationship, while RS-485 permits multiple drivers on a bus but requires careful idle-state biasing and termination. The exact driver strength, receiver thresholds, data rate, common-mode range, ESD rating, and pin-level truth table are not supplied in the verified data and should be confirmed in the manufacturer datasheet before layout or production use. This page consolidates the verified distributor and manufacturer references for the ISL8491IB, distinguishes the device from general-purpose interface ICs, and provides sourcing, selection, replacement, and application guidance. It also records uncertain specifications explicitly rather than substituting estimates, helping engineers make an informed first-stage decision before validating the complete electrical limits and pin configuration.

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ISL8491IP - 5V 5Mbps RS-485/RS-422 Transceiver | Renesas
ISL8491IP

ISL8491IP - 5V 5Mbps RS-485/RS-422 Transceiver | Renesas

The Renesas Electronics ISL8491IP is a 5 V, low-power RS-485/RS-422 line transceiver with one driver and one receiver, full-duplex operation, a maximum data rate of 5 Mbps, and a 14-pin PDIP package. The device combines differential RS-485 and RS-422 communication support in a single integrated circuit, making it suitable for industrial data links, instrumentation, and point-to-point balanced communication systems. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into differential balanced signals for reliable data transmission over cables. These differential signaling methods are members of the broader interface-controller category, connect digital systems to physical communication links, and provide improved noise immunity compared with single-ended logic interconnects. The ISL8491IP supports both protocols, allowing equipment designers to select the appropriate termination and biasing arrangement for the cable and system topology. The verified part data identifies a 4.5 V to 5.5 V supply range, 5 Mbps maximum data rate, 70 mV receiver hysteresis, one transmitter, one receiver, full duplex, and an operating temperature range of -40°C to 85°C. These characteristics suit industrial equipment operating near a regulated 5 V rail and requiring communication speeds up to 5 Mbps. The through-hole PDIP-14 package is also appropriate for leaded PCB designs where a small surface-mount land pattern is not required. The ISL8491IP is listed as obsolete in the verified source data. Consequently, engineers should not assume that new production procurement is available and should confirm lifecycle status, traceability, and last-time-buy opportunities directly with the manufacturer or an authorized distributor. Renesas Electronics Corporation is the listed supplier, while the original documentation is associated with Intersil Corporation. Typical uses include industrial control links, factory automation equipment, remote sensor interfaces, RS-422 point-to-point links, and test-and-measurement systems. In these applications, the device separates the logic domain from the noisy cable environment through differential transmission and reception. Cable length, data rate, termination, common-mode range, and grounding remain system-level constraints that must be evaluated separately from the integrated circuit specifications. A practical design step is to preserve the transmitter enable and receiver enable control paths, place termination only where required by the cable topology, and provide a stable 5 V supply close to the device. Since the verified sources do not provide a complete pin table, absolute maximum ratings, output current, or detailed electrical characteristics, those values should be confirmed in the manufacturer datasheet before final release. This page combines verified distributor and datasheet information with lifecycle, sourcing, application, and design guidance. It also distinguishes verified facts from parameters that still require manufacturer-document confirmation, helping engineers evaluate the ISL8491IP without confusing an obsolete status with an interchangeable modern replacement.

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ISL8499IR - 0.24 Ohm Low-Voltage Quad SPDT Switch | Renesas
ISL8499IR

ISL8499IR - 0.24 Ohm Low-Voltage Quad SPDT Switch | Renesas

The Renesas Electronics ISL8499IR is a low-voltage, bidirectional, quad SPDT analog switch housed in a 16-pin QFN package. It operates from a single +1.65 V to +4.5 V supply, with an on-resistance of 0.24 ohm at +4.3 V, 0.26 ohm at +3.0 V, and 0.45 ohm at +1.8 V. Switching times are 15 ns for tON and 13 ns for tOFF, making the device suitable for battery-powered equipment requiring low resistance and rapid signal selection. An analog switch is an integrated semiconductor that routes analog signals between external nodes under digital control. The ISL8499 contains two independent dual-pole, double-throw switching functions, commonly described as a quad SPDT or dual DPDT device. Within the interface IC and analog-switch hierarchy, its low-voltage operation, bidirectional signal path, and low power consumption are particularly useful for portable audio, test, communication, and battery-operated measurement systems. The principal electrical features include a +1.65 V to +4.5 V single-supply range, low on-resistance across multiple supply voltages, and on-resistance matching between channels of 0.04 ohm. The verified datasheet information also reports on-resistance flatness across the signal range of 0.05 ohm. These characteristics help reduce insertion loss and channel-to-channel resistance variation when routing sensitive analog signals. The device is designed for 1.8 V-compatible logic when operated from a +3 V supply. With a +4.2 V supply and 2.85 V logic-high inputs, the maximum supply current is 10 microamperes. Power dissipation is reported below 0.2 microwatts under the stated low-power conditions, supporting the use of the ISL8499IR in battery-powered equipment where leakage and standby consumption can affect the usable runtime. Typical applications include routing audio signals in portable equipment, selecting sensor inputs in test and measurement systems, multiplexing communication channels, and switching low-voltage analog signals in battery-operated instruments. The 15 ns tON and 13 ns tOFF characteristics support fast system reconfiguration, while the low on-resistance limits signal attenuation across the selected channel. Designers should verify control-logic levels against the selected supply voltage and ensure that switched signals remain within the device's supported analog-signal range. The exposed thermal pad and exposed-pad construction also require a suitable PCB land pattern and adequate copper for heat spreading, particularly when continuously routing signals at higher frequencies or temperatures. This page consolidates the verified Renesas product information, source-linked pricing and lifecycle references, explicitly identified drop-in relationships, and practical selection guidance. It also separates documented performance from parameters that still require confirmation from the complete manufacturer datasheet or a specific distributor record.

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ISL8499IRZ - Ultra-Low On-Resistance Quad SPDT Switch | Renesas
ISL8499IRZ

ISL8499IRZ - Ultra-Low On-Resistance Quad SPDT Switch | Renesas

The Renesas ISL8499IRZ is a low-voltage, bidirectional quad SPDT analog switch, also described as a dual DPDT switch, designed for single-supply operation from +1.65 V to +4.5 V. It is packaged in a 16-pin QFN package measuring 3 x 3 mm. The device provides four switch circuits in a 2:1 configuration, making it suitable for routing low-voltage analog signals in compact, battery-powered, and portable equipment. An analog switch is a semiconductor device that connects or disconnects signal paths under digital control. The ISL8499IRZ family combines low ON-resistance, fast switching, low power consumption, and 1.8 V-compatible logic operation. Its low ON-resistance is intended to minimize signal attenuation and distortion when the switch is closed, while the fast switching speeds support higher-bandwidth signal routing. The bidirectional architecture allows signal flow in either direction through each selected switch path. The principal electrical features include ultra-low ON-resistance, with manufacturer cross-reference information listing 0.24 ohm at V+ = 4.3 V and 0.26 ohm at V+ = 3.0 V. The device also has a stated ON-resistance of 0.45 ohm at V+ = 1.8 V, ON-resistance matching between channels of 0.04 ohm, and ON-resistance flatness across the signal range of 0.05 ohm. Switching timing is listed as 15 ns for turn-on and 13 ns for turn-off. The ISL8499IRZ is designed around a low-voltage, single-supply architecture intended for battery-powered systems and other compact applications. Its specified operating temperature range is -40 C to +85 C. The 16-QFN (3 x 3) package provides a small board footprint for space-constrained designs, while the quad SPDT arrangement allows multiple independent or mutually exclusive signal connections to be controlled from a small number of control inputs. Typical uses include portable measurement equipment, battery-operated test instruments, analog signal conditioning, communication interfaces, and compact embedded systems. In these applications, the switch can select between external signals, route a signal toward an amplifier or converter, or isolate a measurement path during a test sequence. The low ON-resistance helps preserve signal amplitude, while the fast switching performance can reduce timing overhead in repeated routing operations. PCB implementation should follow the manufacturer pin and land-pattern guidance, paying particular attention to exposed-pad soldering and the control-logic levels. The 1.8 V-compatible control inputs allow operation from low-voltage digital systems, but the logic thresholds and supply sequencing must still be checked against the final system requirements. The short 3 x 3 mm package also requires careful placement of power and ground connections to minimize parasitic inductance and maintain clean analog signal behavior. This product page combines the manufacturer switching characteristics, package information, cross-reference guidance, and practical design considerations for engineers evaluating the ISL8499IRZ. It is intended to support footprint compatibility checks, signal-integrity planning, sourcing decisions, and early schematic and layout reviews.

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ISL8499IV - Ultra Low ON-Resistance Quad SPDT Switch | Renesas
ISL8499IV

ISL8499IV - Ultra Low ON-Resistance Quad SPDT Switch | Renesas

The Renesas Electronics ISL8499IV is an ultra-low ON-resistance, bidirectional Quad SPDT analog switch, also described as a dual DPDT switch, for single-supply operation from +1.65 V to +4.5 V. The device is supplied in a 16-TSSOP package and is intended for low-voltage signal-routing applications, including battery-powered equipment. Its listed ON resistance is approximately 250 mOhm in distributor product data, while the manufacturer-oriented description identifies 0.24 Ohm ON resistance at a +4.3 V supply and 0.26 Ohm at +3.0 V. The switch also provides fast switching behavior, with tON and tOFF values reported in the Intersil datasheet excerpt as 15 ns and 13 ns respectively. Digital logic inputs are described as 1.8 V logic-compatible when the device is operated from a single +3 V supply. The ISL8499IV is a bidirectional analog switch, so its signal paths can be routed in either direction, making it suitable for multiplexed sensor, measurement, communication, and low-voltage analog systems. It is identified by Renesas as a pin-compatible drop-in replacement for the STG3699 and DG2799, according to the supplied cross-reference material. This page combines manufacturer identification, distributor specifications, cross-reference information, practical design notes, and a parameter comparison to support sourcing and engineering decisions. Pricing shown below is referenced to the current verification date, while unverified details are explicitly marked for follow-up rather than inferred.

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ISL8563CB - 2/2 RS-232 Transceiver, 250kbps | Renesas
ISL8563CB

ISL8563CB - 2/2 RS-232 Transceiver, 250kbps | Renesas

The Renesas ISL8563CB is a 2/2 RS-232 transceiver IC with a 3 V to 5.5 V single supply, a guaranteed minimum data rate of 250 kbps, and 1 microamp low-power operation in an 18-pin SOIC package. It combines two transmitters and two receivers on one die, allowing a compact implementation of bidirectional serial-interface ports while meeting EIA/TIA-562 and EIA/TIA-232 specifications. An RS-232 transceiver is an interface IC that converts logic-level signals between a host or controller and a RS-232 physical link. The transmitter converts low-voltage digital signals into RS-232-level voltages, while the receiver converts the bipolar RS-232 input back into a logic-compatible signal. Within the broader hierarchy, this device is a line-driver and receiver interface IC used to bridge digital systems with RS-232 equipment. The ISL8563CB operates from a single +3 V to +5.5 V supply, including the lower-voltage condition identified in the verified datasheet description. Its low-power operation is specified at 1 microamp, making it relevant to portable and space-constrained systems where standby consumption matters. The guaranteed 250 kbps minimum data rate supports common serial-control, point-of-sale, industrial-interface, and legacy peripheral connections without requiring a separate high-speed transceiver. The device requires only four external 0.1 microfarad capacitors according to the verified manufacturer-datasheet description. This small external-component count simplifies layout and reduces the number of placement and routing decisions around the interface. Because the ISL8563CB integrates two transmitters and two receivers, each channel direction can be implemented without duplicating the driver or receiver function in separate packages. Typical uses include RS-232 links in personal digital assistants, palmtop computers, notebook and laptop computers, embedded control systems, and industrial data-acquisition equipment. The same device can also support service-console, configuration-port, and point-of-sale interfaces where an EIA/TIA-232-compatible physical layer is required but board area and standby power are constrained. Designers should verify signal levels, grounding, cable length, and system requirements against the manufacturer datasheet before replacing a discrete RS-232 implementation. The four external 0.1 microfarad capacitors should be placed close to their associated device pins, while supply and ground planes should provide a low-impedance return path. Because the verified data does not provide a complete 18-pin mapping, the package drawing and pin definitions must be checked against the datasheet before PCB release. This page consolidates the verified supply, speed, power, package, standard-compliance, pricing, and sourcing information for ISL8563CB and adds practical application guidance. It also explicitly distinguishes verified facts from parameters that remain unavailable in the supplied data, including detailed pin definitions, temperature limits, and confirmed drop-in substitute MPNs.

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ISL8563CP - 250kbps RS-232 Transceiver | Renesas
ISL8563CP

ISL8563CP - 250kbps RS-232 Transceiver | Renesas

Renesas ISL8563CP is a dual RS-232 transmitter and receiver interface IC operating from +3 V to +5.5 V at data rates up to 250 kbps, with a low operating supply current of 1 µA and an 18-pin PDIP package. The device is designed for portable and embedded systems that require bidirectional serial communication using the RS-232 electrical interface. An RS-232 transceiver is an interface IC that converts logic-level transmit and receive signals into RS-232-compatible levels, then restores received RS-232 signals to logic levels for a host, controller, or peripheral. The ISL8563CP belongs to the interface IC category and combines two transmitters and two receivers in one package, providing bidirectional communication over two data channels. Its documented headline characteristics include operation from +3 V to +5.5 V, 1 µA operating supply current, and a maximum data rate of 250 kbps. The indexed datasheet states that the transmitters and receivers meet EIA/TIA-232 and EIA/TIA-562 specifications even when the supply voltage is 3.0 V. These characteristics suit equipment where low voltage compatibility and reduced supply demand are important. The ISL8563CP contains two complete transmit channels and two receive channels, allowing two simultaneous RS-232 links within one device. Unlike single-direction level-shifter blocks, this integrated arrangement reduces the component count required for a dual-port interface. Its 18-pin PDIP package is suitable for through-hole assembly and prototype or legacy system designs where a surface-mount package is unnecessary. Typical uses include RS-232 ports for personal digital assistants, palmtop computers, notebook and laptop computers, industrial control equipment, diagnostic interfaces, and embedded data-logging systems. A board designer can place the transceiver between a host UART and an external DB9 or other RS-232 connector, while observing the interface voltage, grounding, and protection requirements of the RS-232 environment. Designers should verify the logic levels, receiver thresholds, transmitter output levels, capacitance loading, and external protection requirements against the complete datasheet before production use. Because the verified results do not provide a complete pin table, exact pin names, temperature range, or recommended external network values, those details require confirmation from the original manufacturer documentation. The 1 µA operating-current figure should also be understood under its stated test conditions rather than assumed across every operating mode. This page consolidates the verified distributor indexing, package information, interface standards, operating limits, and application guidance for the ISL8563CP. It also distinguishes confirmed technical facts from unavailable details and avoids presenting unverified drop-in equivalents or fabricated pricing as authoritative purchasing data.

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ISL8563IB - 250kbps RS-232/RS-562 Transceiver | Renesas Electronics
ISL8563IB

ISL8563IB - 250kbps RS-232/RS-562 Transceiver | Renesas Electronics

The Renesas Electronics ISL8563IB is a 2-transmitter, 2-receiver RS-232 and RS-562 interface transceiver operating from a 3V to 5.5V supply at up to 250kbps, housed in an 18-pin SOIC package. The device provides approximately 1µA low-power operation and incorporates ESD protection rated at ±15kV, making it suited to compact battery-powered and portable serial interfaces. It is used for RS-232 and RS-562 data links in notebook computers, PDAs, palmtop computers, digital cameras, and other portable equipment. An RS-232 transceiver is an interface IC that combines voltage-level transmitters and receivers for unbalanced serial communication. It belongs to the driver, receiver, and transceiver hierarchy within interface ICs, converting logic-level signals into RS-232-compatible levels and reconstructing received logic signals. The RS-562 standard is referenced alongside EIA/TIA-232 and EIA/TIA-562, allowing the ISL8563 family to support both communication approaches where compatible with the system interface requirements. The ISL8563IB provides two transmit channels and two receive channels, supporting a complete dual-direction serial interface in one package. Its maximum data rate of 250kbps accommodates higher-speed legacy serial links, while the 3V to 5.5V supply range supports both 3V and 5V system rails. The approximately 1µA operating-current figure is particularly relevant to portable equipment where standby and overall battery consumption constrain the usable architecture. ESD protection of ±15kV strengthens the device against electrostatic discharge encountered during connector handling and field use. The 18-pin SOIC package also provides a conventional surface-mount option for RS-232 ports. Because the available verification data does not include the complete electrical tables, exact output levels, slew rates, receiver thresholds, and internal charge-pump details, designers should consult the manufacturer datasheet before finalizing timing, capacitance, and signal-integrity margins. Typical uses include serial ports in portable computers, PDAs, palmtop computers, digital cameras, battery-operated instruments, and other equipment requiring an RS-232 or RS-562 connection. In a portable design, the 3V-to-5.5V operating range permits connection to either rail, while the low 1µA operating-current characteristic supports power-conscious operation. Designers should still confirm whether the cited value applies to a specific mode or test condition in the datasheet. The primary design consideration is preserving adequate driver, receiver, and connector margins under the actual cable and load conditions. Place the transceiver close to the interface connector, provide the required bypass capacitance, observe the maximum supply voltage of 5.5V, and validate the complete channel with the intended cable length and baud rate. The available data does not provide a verified pin-by-pin mapping, so the package drawing and pin descriptions should be taken directly from the manufacturer datasheet. This product record consolidates the verified distributor specifications, package information, commercial availability, and practical selection considerations for the ISL8563IB. It also distinguishes verified facts from parameters that still require datasheet confirmation and explains why no unverified cross-brand substitute is presented as a guaranteed drop-in replacement.

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