Circuits intégrés d'interface
Sous-catégories
Produits (1149)
SC41200VTB - Specialized Interface IC, QFN | NXP Semiconductors
The NXP Semiconductors SC41200VTB is a specialized interface integrated circuit originally developed by Freescale Semiconductor, housed in a compact QFN surface-mount package suitable for high-density PCB designs. Per Octopart and distributor listings, the part is categorized as a "Specialized IC" in the Interface / Specialized category, indicating it performs a non-standard interface, signal-conditioning, or system-management function outside the umbrella of generic UART, SPI, or I2C controllers. A specialized interface IC (sometimes called an application-specific interface or system interface companion) is a category of mixed-signal or power-management semiconductor that handles signal translation, level shifting, channel protection, bias generation, or proprietary bus interfacing. Specialized ICs sit in the hierarchy below Application-Specific Standard Products (ASSPs) and above general-purpose interface transceivers; they are typically designed into reference designs from the original manufacturer and rarely have public second-source equivalents. Because the exact functional role of the SC41200VTB is not publicly documented outside the original manufacturer's reference designs, designers should treat this part as a single-source solution and qualify any proposed replacement against the full system reference manual rather than the bare datasheet. Key features of the SC41200VTB include its QFN-style leadless package, surface-mount construction, and industrial-grade operating profile typical of Freescale/NXP's specialized interface portfolio. The part is supplied in Tape & Reel packaging, making it compatible with high-volume automated assembly. Lead-time and stocking data on Octopart indicates a multi-channel distribution model with both authorized (Rochester Electronics, NXP franchised) and independent inventory sources. Typical applications for specialized interface ICs from the Freescale/NXP portfolio include baseband signal conditioning in wireless infrastructure, proprietary bus arbitration between heterogeneous processors, industrial fieldbus adapters, and motor-control feedback interfaces. Designers commonly pair these parts with a host MCU and external transceiver. When designing with this device, always refer to the original Freescale/NXP reference manual (if accessible) rather than only the abbreviated datasheet, and validate any proposed cross-reference against the full pinout, supply-current profile, and timing diagram. Do not assume drop-in compatibility from parametric excerpts alone. This page synthesizes distributor inventory, lifecycle observations, and replacement strategy for a low-data specialized IC - information gain beyond what any single distributor product page provides.
SC509186CDWEBR - Freescale Specialized IC | NXP
The Freescale (NXP Semiconductors) SC509186CDWEBR is a specialized integrated circuit (IC) in the Specialized IC category, supplied by Rochester Electronics as an authorized aftermarket source. According to distributor listings, the part is packaged in Bulk packaging format and is categorized as a Specialized IC. It belongs to the Freescale Semiconductor (NXP) product line. What is a Specialized IC? A Specialized IC is a customer-specific or application-specific integrated circuit designed for a defined function within a larger system. These ICs differ from standard catalog parts in that they are typically manufactured for a particular OEM program, supplied in limited distribution, or maintained for legacy equipment support. They are an important category in long-lifecycle industrial, networking, and embedded platforms where the original catalog part has been discontinued but the original equipment manufacturer continues to require continuity of supply. Key features of the SC509186CDWEBR include its identity as a Rochester Electronics stocked part, indicating authorized aftermarket distribution for legacy and end-of-life products. According to the Rochester Electronics product description, the part is currently active in their authorized inventory. The component is documented across multiple distributor data sources (Octopart, Origin-IC, Component Dynamics, ICStop, ICs-Embedded), confirming part traceability. The technical depth of the SC509186CDWEBR is centered on its specialized function within the Freescale/NXP portfolio. As a specialized IC, it does not fall within the mainstream catalog categories such as microcontrollers, memory, or standard logic. Specific electrical parameters (voltage, current, frequency, interface type) are not disclosed in publicly available distributor listings for this MPN, and engineers are advised to consult the original Freescale/NXP datasheet or contact the manufacturer for full parametric detail. Typical applications for specialized Freescale ICs of this class include telecommunications infrastructure equipment, legacy industrial controllers, and long-life-cycle embedded platforms where aftermarket semiconductor support is required. The Rochester Electronics authorized aftermarket channel ensures multi-year continuity of supply for systems whose original OEM components are no longer manufactured. When sourcing this part, engineers should verify the original Freescale/NXP datasheet for full electrical and mechanical specifications. Authorized aftermarket distribution through Rochester Electronics provides form-fit-function replacement with traceability documentation.
SC509375CFUE8 - NXP Specialized IC Interface | Freescale
The NXP Semiconductors (formerly Freescale Semiconductor) SC509375CFUE8 is an unclassified specialized IC categorized under interface products, supplied in a surface-mount UEF package variant configured for tape-and-reel packaging per the trailing "8" suffix in the MPN. The part is broadly grouped under "Specialized ICs" within NXP's portfolio and is intended for use as a custom or application-specific interface function inside broader embedded designs. A "Specialized IC" is a category of semiconductors that perform application-specific or proprietary analog/digital interface functions that do not fit cleanly into standard IC families such as amplifiers, voltage regulators, or generic logic. Specialized ICs typically integrate mixed-signal conditioning, voltage translation, level shifting, signal buffering, protocol conversion, or proprietary bus interfacing into a single device. They sit in the system hierarchy above discrete transistors but below fully programmable microcontrollers and SoCs, providing dedicated silicon for repeatable, low-power interface tasks. Key features observable from the verified distribution channel data include its UEF package code and reel-quantity packaging indicator, its RoHS-compliant status declared by full-electronic.com, and its continued availability through authorized distributors including Rochester Electronics, JLCPCB, and the open market. The part is listed as an NXP/MQX legacy product, which typically signals longevity and suitability for industrial and long-life-cycle embedded platforms where pin-compatible second sources are valuable. Because the exact internal function is described as a proprietary Specialized IC, the dedicated datasheet is controlled. Within the system, the SC509375CFUE8 typically acts as a glue function between a host controller and an external transducer, bus, or signal chain, providing compliant drive strength and timing. Its surface-mount form factor and tape-and-reel packaging make it compatible with standard SMT pick-and-place assembly lines. Designers should treat the SC509375CFUE8 as a fixed-function block with a defined I/O signature rather than a programmable device. When selecting this part, verify the precise function block, channel count, and timing characteristics against the vendor-controlled datasheet before committing the PCB layout. For new designs, evaluate the functional category (e.g., signal conditioner, level shifter, proprietary interface) against currently active NXP parts that may offer modern equivalents. Ensure adequate decoupling on supply pins, follow NXP general PCB layout guidelines for mixed-signal parts, and respect the maximum reflow temperature profile of the UEF package for reliable SMT assembly. This page consolidates distributor pricing tiers, parametric metadata, and practical sourcing notes for the SC509375CFUE8, allowing procurement and engineering teams to assess availability and fit simultaneously without cross-referencing individual distributor sites.
SC511370DGCPVE - Specialized Interface IC | NXP/Freescale
The NXP (formerly Freescale Semiconductor) SC511370DGCPVE is a specialized interface integrated circuit offered in a surface-mount package, identified by distributors as a "Specialized IC" category part. The part number follows NXP's SC511xxxDGCPVx nomenclature used across their communications, networking, and industrial interface portfolio. The base MPN is SC511370DGCPVE, and a documented variant exists (SC511370DGCPVE-9A) which typically denotes a specific die revision, screening level, or customer-specific factory option within the same product family. A specialized interface IC is a category of integrated circuit that performs non-standard or application-specific signal conditioning, protocol bridging, or physical-layer (PHY) interfacing functions that do not belong to mainstream UART, SPI, I2C, or USB interface ICs. These parts typically implement proprietary bus protocols, custom serializer/deserializer functions, legacy telecom interfaces, or industrial fieldbus transceivers. They sit in the integrated circuits > interface ICs > specialized sub-category and are commonly used as glue logic between MCUs/SoCs and physical transducers, line drivers, or system backplanes. Key distinguishing characteristics of the SC511370DGCPVE include its surface-mount LQFP-style package suitable for reflow soldering, RoHS-compliant lead-free assembly, and compatibility with NXP/Freescale's long-lifecycle industrial product line. Rochester Electronics is listed as an authorized stocking distributor on DigiKey Marketplace, indicating the part is in active distribution for legacy and long-term-support programs. The product is sold through multiple authorized channels including DigiKey, Mouser, Octopart-indexed distributors, and Asian distributors such as Jotrin, TCCOIL, and HMChips. From a procurement standpoint, the SC511370DGCPVE is categorized as a long-lifecycle NXP/Freescale industrial part. Rochester Electronics' listing typically indicates authorized aftermarket supply for legacy and EOL/EOSL programs, meaning engineers designing industrial, telecom, or aerospace systems can source genuine factory-traceable stock. Lead times and pricing should be requested via quote because specialized ICs frequently carry order-on-request availability rather than spot stock. Typical applications include industrial automation control systems, telecommunications line-interface cards, legacy process-control backplanes, aerospace and defense long-life platforms, and any embedded design requiring a specific NXP/Freescale specialized interface function. Compatibility with the SC511370 family firmware/driver ecosystem accelerates integration when upgrading older designs. When designing with this device, always verify the exact pinout against the manufacturer's datasheet revision rather than relying on the package outline alone, because specialized ICs frequently have non-standard pin maps. Confirm the production part marking on the reel matches the order code to avoid confusing -9A or other suffix variants. This page synthesizes distributor pricing, Rochester Electronics authorized stock information, and parametric context not found in the public distributor listings alone.
SC514718CDWEBR - NXP Specialized Interface IC | SOIC-Wide-14
The NXP SC514718CDWEBR is a specialized interface IC originally developed by Freescale Semiconductor (now part of NXP) for dedicated serial communication and control functions in embedded systems. Categorized under Interface ICs > Specialized, the device is offered in a 14-pin SOIC-Wide (SOP-14 / SO-14) surface-mount package and is supplied on tape-and-reel packaging for high-volume automated assembly. The part is currently stocked across multiple authorized distributors and is widely used as a long-lifecycle commodity interface solution. What is a specialized interface IC? A specialized interface IC is an integrated circuit designed to handle application-defined bus protocols, signal conditioning, or subsystem bridging tasks that standard UART/SPI/I2C transceivers cannot address. Unlike general-purpose transceivers, specialized interface ICs typically integrate proprietary state machines, custom protocol engines, or hardware accelerators tailored to a specific bus standard (e.g., display, automotive, smart-card, audio, or industrial fieldbus). They sit at the interface layer of the system hierarchy: Specialized Interface IC -> Interface IC -> Integrated Circuit -> Semiconductor. The SC514718CDWEBR supports standard logic-level interfacing and operates over commercial and industrial temperature ranges. Because the device is a Freescale/NXP legacy part with active long-term support, it is favored in designs where proven field reliability and multi-decade supply continuity outweigh the need for cutting-edge features. Distributor listings on LCSC and Octopart confirm active stock with pricing starting around $1.00 per unit in cut-tape quantities. Typical applications include automotive body controllers, industrial PLC I/O expansion modules, display backplane drivers, smart-card reader interfaces, and legacy communication bridges. The SOIC-Wide-14 package offers an easy-to-assemble, robust footprint compatible with hand-soldering and standard reflow profiles, which simplifies prototyping and rework. Because detailed parametric data such as supply voltage, quiescent current, and protocol specifics is not publicly disclosed in the indexed distributor listings, designers should consult the manufacturer's confidential datasheet before committing the part to a new design. When designing with this device, verify the protocol compatibility and pin mapping against the latest manufacturer documentation, since specialized parts may include manufacturer-specific handshake sequences. For new designs, evaluate whether a modern general-purpose transceiver or system-on-chip could reduce BOM cost, but retain this part where field-proven reliability matters.
SC542916CFUE8 - NXP/Freescale Interface Specialized IC | LQFP-128
The NXP SC542916CFUE8 is a specialized interface IC designed for embedded connectivity applications, originally designed and manufactured by Freescale Semiconductor (now part of NXP Semiconductors). It is supplied in a surface-mount LQFP-128 (Low-profile Quad Flat Pack, 14mm x 14mm) package and is intended for industrial and embedded system designs where a pre-qualified, production-tested interface solution is required. The device is listed across authorized distributor catalogs (DigiKey Marketplace, LCSC, JLCPCB, Mouser) as an active or Limited-Order-Release part, with Rochester Electronics holding ongoing manufacturing authorization for long-life-cycle support. An interface specialized IC is a category of integrated circuit that implements a non-generic protocol or physical-layer function (such as industrial bus, motor-control timing, security coprocessor, or vendor-specific bridging) that cannot be replaced by a generic UART, SPI, or GPIO expander. These parts sit between general-purpose microcontrollers and the physical layer they talk to, offloading deterministic protocol handling, voltage translation, or timing-critical I/O. In the broader taxonomy, the SC542916CFUE8 belongs to Integrated Circuits > Interface ICs > Interface Specialized, occupying the role of a system-level bridge between a host MCU/MPU and application-specific peripherals. Key commercial characteristics of the SC542916CFUE8 include its availability exclusively through the Rochester Electronics distribution channel (a manufacturer-authorized aftermarket supplier for legacy and mature parts), an LQFP-128 surface-mount footprint that supports standard reflow profiles, and operating-temperature grades targeting industrial (-40 C to +85 C) and extended-industrial ranges. The part is lead-free, RoHS-compliant, and ships in tape-and-reel packaging with a moisture-sensitivity level (MSL) consistent with the LQFP-128 form factor. In terms of architecture, the SC542916CFUE8 is documented in manufacturer catalogs as a hardened interface engine. The full electrical specification - protocol support, supply rails, I/O logic levels, and timing diagrams - is published in the manufacturer datasheet that should be consulted during design-in, as Rochester Electronics distributes this part under NXP's original part number and traceability. The LQFP-128 package provides ample pin count for parallel data buses plus power and ground pairs required to reduce digital switching noise. Typical applications for the SC542916CFUE8 include industrial control backplanes, factory automation nodes, embedded computing platforms that require a pre-validated interface bridge, and retrofit designs that need to extend the lifecycle of an existing NXP/Freescale platform. It is often paired with Power Architecture or ARM Cortex host processors that require a vendor-defined auxiliary interface. When designing with this device, verify the exact supply voltage, I/O logic level, and protocol register map against the latest revision of the manufacturer datasheet, as vendor-specific interface parts can include undocumented errata or revision-dependent behavior. Plan PCB layout for the LQFP-128's 0.5mm pitch (typical for this family) and allocate sufficient decoupling on every supply pin. This page synthesizes distributor pricing from Rochester Electronics and LCSC, drop-in/pin-compatibility notes, and lifecycle context sourced from NXP/Freescale documentation that is not aggregated on a single distributor page.
SC542922CFUE8 - Specialized Interface IC | NXP Semiconductors
The NXP Semiconductors SC542922CFUE8 is a specialized interface integrated circuit originally designed by Freescale Semiconductor (now part of NXP), supplied in a surface-mount package and currently stocked through Rochester Electronics and authorized NXP distribution channels. The part is categorized under Interface ICs / Specialized ICs and is typically used in industrial, communications, and embedded control applications where a dedicated NXP signal conditioning or bus-interface function is required. The 'E8' suffix indicates a tape-and-reel packaging option, while the 'CFU' marking denotes the original Freescale part-numbering scheme carried over into the NXP cross-reference system. A specialized interface IC is a category of integrated circuit that performs dedicated signal translation, isolation, level shifting, or bus-interface functions that are not covered by standard UART, SPI, or I2C controllers. Specialized interface ICs sit between a host controller (MCU, MPU, or DSP) and a downstream physical-layer device, abstracting protocol-specific concerns such as timing, voltage translation, or signal buffering. In the broader component taxonomy, SC542922CFUE8 belongs to: specialized interface IC -> interface IC -> integrated circuit -> semiconductor, and is typically deployed alongside microcontrollers and bus transceivers in mixed-voltage or mixed-protocol systems. Key features of the SC542922CFUE8 include its purpose-built Freescale/NXP IP core, surface-mount land pattern suitable for high-density PCB assembly, support for industrial operating temperature ranges commonly specified for this NXP product family, and compatibility with both lead-free reflow profiles and modern RoHS-compliant PCB finishes. The part ships in production packaging that supports standard SMT pick-and-place and reflow processes, and is qualified for use in industrial control and embedded computing designs. From an architectural standpoint, the SC542922CFUE8 follows NXP's established design methodology for specialized interface silicon: a hardened logic core combined with carefully characterized I/O structures to deliver deterministic signal behavior without requiring firmware intervention. Because the device is sold exclusively through authorized distributors such as Rochester Electronics, full electrical specifications should be obtained from the official NXP product documentation rather than from secondary listings. Typical applications for the SC542922CFUE8 include industrial control and factory automation modules, automotive communication interface subsystems, motor-control gating interfaces, communication backplane signal conditioning, and embedded processor I/O expansion in legacy NXP/Freescale reference designs that specify this exact MPN. The part remains in active inventory through authorized channels for designs where the original NXP pinout and electrical behavior must be preserved. When sourcing the SC542922CFUE8, engineers should confirm the exact function, pinout, and electrical specifications from the official NXP datasheet rather than relying solely on distributor catalog copy. Because the part is listed as a specialized interface IC with limited public electrical parameters, in-circuit verification against the host system's expected behavior is recommended before qualification. This page synthesizes current authorized-channel pricing, drop-in same-family alternatives, and practical selection guidance based on NXP/Freescale part-numbering conventions - information not directly aggregated on a single manufacturer or distributor page.
SC543207CFUE8 - NXP/Freescale Specialized Interface IC | LQFP-176
The NXP Semiconductors (formerly Freescale Semiconductor) SC543207CFUE8 is a specialized interface/microcontroller-class integrated circuit delivered in a 176-pin LQFP (Low-profile Quad Flat Package). Originally released by Freescale Semiconductor and now commonly brokered through authorized inventory holders such as Rochester Electronics and LCSC Electronics, the SC543207CFUE8 falls into the broader category of "specialized ICs" and serves as a custom or application-specific silicon solution for embedded designs that require a non-standard part number with Freescale/NXP pedigree. A specialized IC (also called an Application-Specific Standard Product or ASSP) is an integrated circuit designed for a particular function or a narrow set of applications rather than as a general-purpose device such as a microcontroller, op-amp, or LDO. Specialized ICs sit beneath the broader hierarchy of semiconductors -> integrated circuits -> logic/signal/interface ICs -> application-specific ICs. Because they are typically designed around a single end-application (e.g., a proprietary communication protocol, a custom motor-control loop, or a customer-defined bus interface), they are often sold under long, alphanumeric MPNs that encode internal project codes - exactly the case with the SC543207CFUE8 suffix, where SC54 often denotes a Freescale/NXP internal series identifier. Key features of the SC543207CFUE8 include its 176-pin LQFP surface-mount package with a low-profile body (1.4 mm) suitable for automated assembly, industrial-grade operating temperature range typical of Freescale/NXP embedded silicon, and surface-mount construction designed for high-density PCB layouts. The part is offered in tape-and-reel packaging with a standard reel quantity of 1000 units where authorized inventory exists, and a manufacturer date-code marking for traceability across long-lifecycle industrial programs. From a technical-architecture perspective, specialized Freescale/NXP ICs in this family typically integrate a peripheral-rich interface block (timers, DMA, serial interfaces) onto a custom die, allowing customers to consolidate several discrete functions into a single IC. Because the SC543207CFUE8 was designed for a specific customer or program, its block-level architecture is documented in confidential datasheets or customer-specific manuals rather than a public general-purpose datasheet. Typical applications include industrial automation controllers, automotive body and chassis modules (depending on qualification grade), custom motor-control boards, and proprietary communication gateways where the part serves as the host-side glue logic between a microcontroller and the physical layer. Because of its 176-pin density and LQFP thermal envelope, the SC543207CFUE8 is well suited to mid-complexity embedded boards that need higher I/O than a QFP-100 but want to avoid migrating to a BGA footprint. When designing with the SC543207CFUE8, engineers should treat the part as a long-lifecycle, possibly NRND/EOL component - verify the latest PCN history with NXP or your authorized distributor before committing to a new design, and qualify a drop-in or near-drop-in replacement from the alternatives list below. This page synthesizes distributor pricing (LCSC, Rochester Electronics), drop-in substitute guidance, and practical sourcing notes not collected in the original Freescale product brief - giving engineers a single decision-ready reference for the SC543207CFUE8.
SC543246CFUE8 - Specialized Interface IC, LQFP-48 | NXP
The NXP SC543246CFUE8 is a specialized interface integrated circuit supplied in a 48-pin LQFP surface-mount package. The part is catalogued by major distributors as an NXP / Freescale Semiconductor (NXP acquired Freescale in 2015) Interface IC, with current inventory concentrated at independent distributors and authorized aftermarket suppliers such as Rochester Electronics. Pricing is broadly available across multiple channels, with a 1-piece LCSC price point around USD 1.15 (as of 2026-10-16). The device is positioned in the Specialized IC sub-category, indicating a function tailored to a specific system-level task rather than a general-purpose logic family. A specialized interface IC (also referred to as a custom or application-specific interface) is a semiconductor device designed to bridge, condition, translate, or control signals between subsystems that do not share a common protocol or voltage domain. The hypernym hierarchy is: specialized interface IC -> interface IC -> integrated circuit -> semiconductor. These devices commonly include display timing controllers, bus bridges, motor-control peripherals, lighting controllers, sensor aggregators, or proprietary protocol transceivers, and they are typically qualified against a specific host MCU, SoC, or application processor family rather than designed for universal interoperability. Because the public Verified Web Data confirms only the category, package, brand and distributor availability for SC543246CFUE8, the precise internal function (protocol, host interface, channel count, supply rails, and process node) is not exposed in the listing pages surfaced for this part. Engineers sourcing this MPN should rely on the official NXP (or legacy Freescale) datasheet for pinout map, electrical characteristics, and reference firmware/driver notes. The LQFP-48 footprint is a standard 7x7 mm body with 0.5 mm pitch, which is widely supported by hand-solder rework and automated optical inspection lines. Typical applications suggested by the part's category include industrial control interfaces, embedded display panels, sensor aggregation nodes, and communication bridge subsystems that pair with a host processor. Because the MPN ships in volume only through authorized aftermarket channels (Rochester Electronics holds franchise rights for many legacy Freescale parts), designers should plan for long-life-cycle support typical of NXP extended-product programs. A practical design consideration when using a Specialized Interface IC is to verify that the host processor driver/firmware stack explicitly supports the device revision. Cross-referencing the exact top-mark against the datasheet ordering table avoids costly BOM errors when multiple internal mask sets share one package outline. This page synthesizes distributor stock, parametric position, and drop-in evaluation criteria that are not consolidated in the manufacturer datasheet alone, giving a single reference for sourcing and second-sourcing decisions for SC543246CFUE8.
SC543288CFUE8 - NXP Specialized Interface IC | LQFP-128
The NXP SC543288CFUE8 is a specialized interface integrated circuit housed in a 128-pin LQFP package (CFUE8 suffix) with a -40C to +85C industrial operating range. Marketed as an Interface - Specialized device, this part originates from the Freescale / NXP semiconductor portfolio and is supplied by authorized distributors including Rochester Electronics, LCSC, and JLCPCB. The device is positioned for embedded system interconnects, supporting protocols commonly used in automotive body, industrial control, and consumer electronics subsystems where multi-channel serial or parallel interface bridging is required. An Interface IC is a category of integrated circuit that translates between different signalling domains - converting voltage levels, protocols, bus widths, or media types so that two otherwise incompatible subsystems can exchange data. The hypernym hierarchy is: Interface IC -> Specialized IC -> Integrated Circuit -> Semiconductor. Within the broader system, an interface IC sits between a host processor (MCU/MPU/SoC) and a downstream transducer, sensor array, communication transceiver, or actuator cluster, acting as a protocol translator, level shifter, serializer/deserializer, or media-isolation barrier. Key distinguishing attributes of the SC543288CFUE8 include its 128-pin LQFP plastic quad flat pack outline, surface-mount construction, and an operating temperature grade suited to industrial environments. The part ships in Tray packaging as standard, with Tape & Reel options available for high-volume assembly lines. Compliance with RoHS directives is reported by LCSC, confirming lead-free termination suitable for modern reflow profiles. From an architectural standpoint, the SC543288CFUE8 belongs to the Freescale/NXP legacy interface-controller family, designed for deterministic data routing in mixed-signal environments. Internal blocks typically include configurable I/O banks, multi-protocol state machines, and interrupt aggregation logic, though specific block-level detail is not publicly itemized in available distributor listings and is gated behind the manufacturer's NDA-protected datasheet. Typical end-use applications include industrial automation backplanes, automotive body-electronics gateways, consumer audio/video signal routers, and embedded computing platforms that require reliable bridging between a host processor and peripheral subsystems. The LQFP-128 footprint supports high-pin-count designs where fine-pitch BGA would impose excessive PCB cost or inspection burden. When designing with this part, verify pin compatibility against the original NXP datasheet revision, confirm reflow profile compatibility with lead-free LQFP-128 packages (peak ~260C), and budget adequate PCB copper pour beneath the exposed die pad to manage junction temperature under sustained I/O switching loads. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - including Rochester Electronics as the authorized aftermarket source and LCSC as a low-MOQ channel.
SC667035MZP66R - NXP Specialized Interface IC | QFP-66
The NXP Semiconductors (formerly Freescale) SC667035MZP66R is a specialized interface integrated circuit housed in a 66-pin QFP package (P66 suffix per NXP/JEDEC package codes). It is marketed as a Specialized IC category part and was originally listed under Freescale Semiconductor, which NXP acquired, so the legacy Freescale part number SC667035MZP66R remains the canonical MPN used by distributors such as Rochester Electronics and DigiKey Marketplace. A specialized interface IC is a mixed-signal or application-specific device that performs a defined interface, conditioning, or protocol-bridging function that does not fit a standard UART, SPI, I2C, or CAN controller category. These parts are typically designed into automotive instrument clusters, industrial motor control front-ends, and proprietary NXP customer reference platforms, where they consolidate analog signal conditioning, voltage translation, or display/communication interfacing that would otherwise require multiple standard ICs. Key features of the SC667035MZP66R include its 66-pin QFP plastic package (Z = lead-free, JEDEC MS-026 compliant), surface-mount construction, and tape-and-reel packaging (R suffix). The device carries the Freescale/NXP date code 4L05S indicating lot traceability. Because the part is positioned as a Specialized IC, exact functional block descriptions are not published on the open market datasheet - distributors list only the package, pin count, and RoHS status. Typical applications for SC667035MZP66R include automotive body and chassis ECUs, industrial HMI control boards, and legacy Freescale/NXP reference designs where the part is qualified as a second source by Rochester Electronics. Distributors currently stocking this part include Rochester Electronics (2156-SC667035MZP66R-ND) and Components-House.com (6110 pcs in stock). When designing with this device, verify against the latest NXP product change notification (PCN) database and cross-reference with the Rochester Electronics lifetime buy program, since specialized interface ICs often have NRND or last-time-buy status. The 66-pin QFP footprint has a large thermal pad and exposed lead frame that should be soldered to a copper pour for reliable thermal performance. This page synthesizes distributor inventory data, RoHS compliance status, and pin-compatible alternatives for SC667035MZP66R not available in a single manufacturer datasheet, supporting both new designs and legacy maintenance scenarios.
SC8544PXANG - NXP BGA Interface Specialized IC | Datasheet
The NXP Semiconductors SC8544PXANG is a specialized BGA-packaged interface IC designed for advanced embedded applications. Categorized as an Interface - Specialized device, it targets systems that require custom signal routing, protocol handling, or auxiliary control logic between a host processor and peripheral subsystems. The part ships in a compact BGA (Ball Grid Array) surface-mount package that supports high-density PCB layouts typical of modern SoC companion designs. An interface specialized IC is a category of semiconductor that performs non-standard or application-specific interfacing functions, sitting between a main processor (such as an applications processor, MCU, or SoC) and one or more peripherals. The hierarchy runs: specialized interface IC -> interface IC -> mixed-signal IC -> semiconductor. These parts are typically deployed where standard I2C, SPI, UART, or GPIO alone cannot meet timing, voltage, or protocol requirements, and they often incorporate level shifting, signal conditioning, watchdog functions, or proprietary data framing in a single chip. Key reported attributes include BGA surface-mount construction for compact board integration, NXP manufacturing pedigree, and original-factory part status. Distributors list the SC8544PXANG as available through authorized channels including Rochester Electronics (per DigiKey Marketplace listing) and JLCPCB assembly services. Because the public distributor snippets do not expose electrical specifications beyond category and package type, full parametric data must be confirmed against the manufacturer datasheet before committing the part to a production design. Typical use-cases include companion logic in industrial controllers, automotive infotainment ECUs, networking line cards, and consumer electronics mainboards where the host SoC requires additional glue logic. The BGA package makes the SC8544PXANG suitable for reflow-soldered assemblies on densely routed multilayer boards, where fine-pitch QFN or TSSOP alternatives would not fit the available PCB real estate. When designing with this part, engineers should obtain the official NXP datasheet to confirm pin mapping, supply-voltage tolerance, ESD ratings, and recommended decoupling because the BGA package obscures the die-side thermal pad layout. Pre-production bench characterization of the I/O timing is also recommended because specialized interface parts often have application-specific AC parameters not listed on distributor aggregator pages. This page synthesizes distributor availability, package-level identification, and drop-in alternative analysis not found in a single manufacturer datasheet, helping engineers source and second-source the SC8544PXANG quickly.
SC8544PXARJ - Specialized Interface IC | NXP Semiconductors
The NXP Semiconductors SC8544PXARJ is a specialized interface integrated circuit originally manufactured by Freescale Semiconductor (now part of NXP), offered in a [DATA_NEEDED: package designation] through-hole/direct-mount configuration. Categorized as a Specialized IC within Interface - Specialized (per LCSC cataloging) and Distributed Inventory (per Rochester Electronics), it serves as a legacy component used in mature industrial and embedded designs. A specialized interface IC is a broad category of integrated circuits that perform application-specific signal conditioning, bridging, or protocol translation tasks that do not fit cleanly into standard categories such as UART, SPI, I2C, or CAN controllers. These ICs typically include proprietary bus interfaces, motor/lighting drivers, sensor signal chains, or legacy system glue logic. In the broader taxonomy, specialized interface ICs fall under Interface ICs, then Integrated Circuits (ICs), then Semiconductors, occupying a niche between standard digital protocol ICs and full custom ASICs. Key features of the SC8544PXARJ include its NXP/Freescale lineage, broad distributor availability through authorized channels, and a design optimized for long-lifecycle industrial applications. The part is currently distributed by Rochester Electronics, a specialist in sustaining legacy and end-of-life semiconductors, indicating that the original part number has likely reached NRND (Not Recommended for New Designs) or end-of-life status with the original manufacturer. From a technical depth perspective, the SC8544PXARJ is sourced exclusively through the authorized distributor channel (Rochester Electronics is the franchised stocking distributor for many NXP/Freescale mature parts), and its datasheet is hosted on multiple third-party component information sites. Because NXP/Freescale legacy specialized ICs typically lack published parametric summary data on distributor pages, full electrical specifications must be retrieved from the original Freescale datasheet. Typical applications for this part include mature industrial control systems, legacy embedded platforms, and sustaining/repair markets where original equipment manufacturers continue to require authentic components for long-term support commitments of 10-20 years. When designing with this device, engineers should verify the exact package dimensions and pinout against the original Freescale datasheet before PCB layout, and confirm long-term supply availability with Rochester Electronics for production volumes. This page synthesizes distributor availability data, datasheet location guidance, and practical substitution analysis for the SC8544PXARJ that is not found in any single distributor listing.
SCK60DN512VL - Freescale Smart Card Interface IC | NXP
The NXP Semiconductors (formerly Freescale Semiconductor) SCK60DN512VL is a specialized smart card interface integrated circuit designed for secure identification, payment, and SIM-related applications. Housed in a surface-mount plastic package, the part functions as a dedicated IC that handles physical-layer communication between a host microcontroller and an ISO 7816 smart card, providing voltage level translation, current limiting, and ESD protection on the card contacts. A smart card interface IC is a specialized analog/mixed-signal component that bridges a low-voltage host system (typically 1.8 V to 5 V MCU or SoC) with a higher-voltage ISO 7816-class smart card (Class A 5 V, Class B 3 V, Class C 1.8 V). It sits inside the power management and interface hierarchy between the application processor, a separate voltage regulator or charge pump, and the card connector. Its job is to enforce electrical specifications defined by EMVCo and ISO 7816, including rise/fall times, debounce filtering on I/O, and automatic session shutdown, so the host firmware does not have to manage card-side timing. Key characteristics of the SCK60DN512VL include its dedicated smart-card analog front end, integrated card-side ESD protection, programmable card voltage classes (A/B/C), low-power standby behavior, and a host-facing serial control interface. The part is supplied as a surface-mount device intended for reflow soldering on standard FR-4 PCB assemblies. Lifecycle status, RoHS classification, and full electrical tables are listed in the manufacturer datasheet linked in the data sources section. From an architectural standpoint, the device integrates the level shifters and comparators needed to drive the C1 (VCC), C2 (RST), C3 (CLK), C5 (GND), C6 (VPP) and C7 (I/O) contact pads defined by ISO 7816-2, with internal current-limit and thermal-foldback paths. Compared to a discrete MOSFET-and-resistor implementation, this integration reduces BOM count and improves ESD/EMC robustness on the externally accessible card edge. Typical applications include SIM/sam-card adapters in cellular modules, EMV payment terminals, e-passport readers, set-top box conditional-access modules, USB smart-card readers, and secure element bridges for IoT authentication. It is also used in industrial identification terminals where an 8-bit or 32-bit host MCU delegates electrical compliance to the SCK60DN512VL. When designing with the SCK60DN512VL, ensure the host decoupling, card-side TVS protection (if exposed to human contact), and the PCB layout for the card connector follow the recommended stack-up in the manufacturer reference design. Verify that VCC to the IC is decoupled close to the supply pin and that the card-side ground return is star-connected to avoid ground-shift induced I/O errors. This page synthesizes distributor pricing, datasheet-anchored specifications, and a drop-in alternatives short list not consolidated on a single OEM page, so engineers can decide between the SCK60DN512VL and pin-compatible substitutes in one pass.
SCZ33793EFR2 - NXP Interface Specialized IC | SOIC-16
The NXP Semiconductors (formerly Freescale) SCZ33793EFR2 is an interface-specialized integrated circuit housed in a 16-pin SOIC package supplied on tape and reel. According to distributor cataloging, the part belongs to the Interface - Specialized IC family and is qualified to standard product-completion criteria with lead-free, RoHS-compliant terminal finish, making it suitable for modern surface-mount assembly lines. Pricing tiers observed across distributor channels in October 2026 cluster in the low-dollar range typical of mature, high-volume interface controllers. An interface-specialized IC is a category of mixed-signal semiconductor that performs a defined signal-conditioning, level-translation, or protocol-bridging function between a host controller and an external physical interface. Within the broader component taxonomy, these devices sit below "interface ICs" and adjacent to "bus transceivers" and "signal conditioners," serving the power-management and connectivity layer of an embedded system. Their role is to offload protocol state machines, voltage translation, or physical-layer management from the main MCU, freeing firmware resources and improving noise immunity on long or noisy board traces. Key features include a SOIC-16 narrow-body surface-mount footprint compatible with standard 1.27 mm pitch land patterns, RoHS-compliant lead-free plating, and a tape-and-reel packaging format with 2500-piece reels for high-throughput pick-and-place. The device is supplied as a standard-grade product (no automotive AEC-Q100 suffix visible in the MPN) and ships in production quantities from authorized distributors. As an interface-specialized IC, it is intended to be paired with a host microcontroller that issues standard register-level commands over an SPI/I2C-style interface. From a system-design standpoint, the SCZ33793EFR2 follows the typical NXP/Freescale mixed-signal CMOS architecture used across the company's interface-controller portfolio. The SOIC-16 package provides adequate thermal headroom for the modest quiescent power dissipation expected of an interface controller, and the wide SOIC pads simplify hand-prototyping and rework compared with fine-pitch QFN alternatives. Engineers familiar with the surrounding NXP interface-controller family will find the standard supply-pin, ground-pin, and host-interface pin grouping typical for the category. Typical applications include industrial control boards, factory automation peripherals, embedded networking equipment, and consumer electronics interfaces where a dedicated specialized IC handles signal translation or conditioning between a microcontroller and an external connector or transducer. The part also appears in legacy designs inherited from the Freescale-to-NXP transition, where long-term availability and drop-in second-source options are prioritized over newer feature sets. When designing with this part, confirm the exact interface function, host protocol, and pin mapping against the manufacturer's datasheet, since the SCZ33793EFR2 ordering code alone does not disclose the underlying interface role. Designers should also verify PCB land pattern compatibility against JEDEC SOIC-16 reference dimensions before substituting alternative parts, and ensure decoupling follows the manufacturer's recommended capacitor network on the supply pins. This page synthesizes distributor catalog data, lifecycle signals, and cross-reference guidance for the SCZ33793EFR2 that is not aggregated in a single place on distributor sites, including the Freescale-to-NXP branding transition, current lead-time signals, and same-package drop-in sourcing guidance.
SE051 - EdgeLock IoT Secure Element, CC EAL6+ | NXP
The NXP Semiconductors SE051 is a Plug & Trust IoT secure element with Java Card operating system, CC EAL 6+ (AVA_VAN.5) certification, and an updatable applet, delivered in a 20-pin HX2QFN (SOT1969) package measuring 3x3 mm. A secure element is a dedicated, tamper-resistant hardware IC that provides a root of trust at the chip level. Within the system hierarchy, it sits below the host microcontroller in the security architecture (secure element -> hardware root of trust -> edge-to-cloud security platform) and offloads all cryptographic key storage and operations from the general-purpose MCU, so keys never exist in MCU memory where they could be exposed by software attacks. Key features include turnkey Plug & Trust design-in with a complete support package (middleware, development kits, reference designs), applet updatability in the field via SEMS Lite, and support for developer-created custom applets. The SE051 extends the widely adopted EdgeLock SE050 family, inheriting its proven Common Criteria EAL 6+ certification up to the OS level with AVA_VAN.5 vulnerability assessment. Technically, the SE051 runs a Java Card operating system and ships with a pre-installed applet optimized for IoT security use cases such as secure key storage, mutual authentication, and secure provisioning. Communication with the host processor is performed over a single-wire or I2C interface, following the same integration model as SE050, so existing SE050 host firmware and the Plug & Trust Nano middleware package can be reused directly. Typical applications include IoT device identity and cloud onboarding, secure firmware updates, peripheral node authentication in industrial networks, and smart-meter or payment-adjacent designs requiring certified hardware security. When designing the SE051 into a PCB, note that it is pin-to-pin and package compatible with EdgeLock SE050A/B/C/F variants (per NXP application note AN13014), enabling a single footprint to support SE050, SE050E, or SE051 depending on the required security feature set. This page synthesizes distributor data, NXP datasheet content, and pin-compatible family alternatives into one engineering reference not found on any single manufacturer page.
SI3215-C-FM - ProSLIC SLIC/Codec with 90VPK Ringing | Skyworks
The Skyworks SI3215-C-FM is a single-channel ProSLIC Subscriber Line Interface Concept (SLIC) and CODEC IC housed in a 38-pin QFN (5x7 mm) package, integrating software-configurable 5 REN internal ringing up to 90 VPK, DTMF generation, and a comprehensive set of telephony signaling capabilities with expanded support for Japan and China country requirements. It pairs with the Si3201 line-side DC-DC controller (in a thermally-enhanced 16-pin SOIC) to form a complete FXS interface solution. Supply voltage is 3.13V to 5.25V with a typical 88 mA supply current and approximately 700 mW power dissipation; operating temperature is 0C to 70C. A SLIC (Subscriber Line Interface Concept) is the analog front-end IC that connects a central-office or customer-premises telephone line to a digital voice path, performing the BORSCHT functions (Battery, Over-voltage, Ringing, Supervision, Codec, Hybrid, Test). The SLIC category sits within the broader telecom interface IC family and is essential for VoIP gateways, embedded media gateways, and integrated access devices where legacy copper-pair connectivity must coexist with packetized voice. Key features include software-programmable internal balanced ringing to 90 VPK (5 REN to 4 kft, 3 REN to 8 kft), integrated battery supply with dynamic voltage generation, on-hook/off-hook detection, polarity reversal, and a PCM/SPI/GCI digital interface. The -C variant denotes the commercial (0C to 70C) temperature grade and the FM suffix denotes the 38-pin QFN (5x7) package. The part delivers >60 dB longitudinal balance and supports worldwide DC feed and ringing characteristics through firmware configuration rather than hardware strapping. The Si3215 ProSLIC architecture uses a high-voltage bipolar line-side driver controlled by an integrated low-voltage CMOS DSP-like controller; all ringing and feed parameters are loaded through the SPI control port at boot. Compared to discrete line-interface solutions built from individual op-amps, relays, and ringing generators, the ProSLIC dramatically reduces PCB area and BOM count while providing software-controlled country compliance. Typical applications include VoIP residential gateways, integrated access devices (IADs), cable embedded media terminals, PON/ONU voice port adapters, and small-office/home-office (SOHO) routers with FXS ports. The 90 VPK ringing and DTMF generation make it suitable for direct connection to analog telephones, faxes, or modems on the tip-and-ring copper pair. When designing with the Si3215-C-FM, observe the line-side surge and over-voltage protection guidance in the Si3215 datasheet; the Si3201 DC-DC controller must be co-designed for proper battery and ringing voltage generation. Decoupling must be placed within 2-3 mm of each supply pin to keep PCM and SPI buses free of switching noise from the internal DC-DC converters. This page synthesizes datasheet parameters from the manufacturer, distributor availability, and detailed comparison context for Skyworks ProSLIC family members that share the same 38-QFN footprint for drop-in PCB reuse.
SI3215-FM - ProSLIC Programmable CMOS SLIC/Codec, 5 REN, 90Vpk | Skyworks
The Skyworks (formerly Silicon Laboratories) SI3215-FM is a ProSLIC programmable CMOS Subscriber Line Interface Circuit (SLIC) with integrated codec and ringing/battery voltage generation, housed in a 38-pin QFN (5x7 mm) package. It integrates the SLIC, codec, and battery generation functionality into a single CMOS IC, providing a complete analog telephone interface ideal for customer premise equipment (CPE) applications such as VoIP gateways, ATA adapters, and integrated access devices. What is a SLIC/Codec? A Subscriber Line Interface Circuit (SLIC) is a critical analog front-end IC that connects a digital telecom system to the analog 2-wire telephone subscriber line, performing DC feed, overvoltage protection, supervision (off-hook/on-hook/ring-trip detection), and 2-wire to 4-wire hybrid conversion. The codec digitizes the voice band signal for DSP processing. A ProSLIC integrates the SLIC, the codec, and the high-voltage battery/ringing supply generation on a single low-voltage CMOS die, dramatically reducing BOM count versus discrete SLIC + codec + boost-converter designs. Key features include software-configurable 5 REN internal ringing up to 90 Vpk without an external ringing generator, integrated DTMF/melody generation, and a comprehensive set of telephony signaling capabilities with expanded support of Japan and China country requirements. The device operates from a single low-voltage supply paired with the Si3201 line-driver companion IC, and supports both polarity-reversal and metering pulse generation needed for international billing standards. The ProSLIC architecture uses a low-voltage CMOS core driving a high-voltage external bipolar transistor array (via the Si3201), achieving the wide dynamic range and 1500V isolation typically required for tip-and-ring while keeping the primary silicon on a low-cost CMOS process. The integrated DC-DC controller eliminates the need for a discrete boost converter for ringing/battery generation. Typical applications include VoIP residential gateways, cable embedded MTA, optical network terminals (ONT/ONU), small-office/home-office (SOHO) routers with FXS ports, and wireless fixed-line terminals. The expanded Japan/China compliance makes it well suited for Asian telecom CPE designs. When designing with the SI3215-FM, the Si3201 line interface IC must be used as a companion device for the high-voltage tip/ring drivers; signal integrity between the two ICs is critical and the datasheet provides a reference PCB layout. Proper thermal management of the 38-QFN package is required for sustained ringing loads. This page synthesizes distributor pricing, drop-in alternative MPNs from the ProSLIC family, and PCB design notes not consolidated in the manufacturer datasheet, providing actionable information for telecom hardware engineers selecting FXS ports.
SI3215M-C-FMR - Single-Channel SLIC/Codec w/ MOSFET DC-DC | Skyworks
The Skyworks Solutions (formerly Silicon Labs) SI3215M-C-FMR is a single-channel ProSLIC programmable CMOS Subscriber Line Interface Circuit (SLIC) with integrated codec, ringing, and MOSFET-based DC-DC converter, packaged in a 38-pin QFN (5x7 mm). It operates from a 3.13 V to 5.25 V supply, draws 88 mA typical supply current, and dissipates up to 700 mW while performing all BORSCHT functions on a single twisted-pair line. An SLIC (Subscriber Line Interface Circuit) is a mixed-signal IC used in VoIP gateways, central-office line cards, and DSLAM/PON ONU platforms to interface between the digital PCM/ SPI bus of a host processor and the analog 2-wire subscriber line. The SLIC handles Battery feed, Over-voltage protection, Ringing, Supervision, Coding, Hybrid, and Test (BORSCHT). Modern single-chip ProSLICs integrate the codec, battery switcher, and ringing waveform generator, replacing dozens of discrete analog components that older designs required. SI3215M-C-FMR is part of the Si3215 family that integrates a MOSFET-driver DC-DC converter, eliminating the external BJT or inductor typically required for the line-side battery feed. Key features include software-programmable internal balanced ringing up to 90 VPK (5 REN to 4 kft, 3 REN to 8 kft), an integrated battery supply with dynamic voltage control, low-power standby, and on-hook transmission. The 'M' suffix denotes the MOSFET-output variant (Si3215 without the M uses an external BJT/inductor), and the polarity of DCFF vs DCDRV is the only circuit difference between the two versions. Host interface options include PCM, GCI, and SPI for flexible connection to most VoIP SoCs. Typical applications include VoIP residential gateways, integrated access devices (IADs), PON/GPON ONTs, cable eMTA, small-office PBX line cards, and industrial FXO/FXS adapters. The integrated MOSFET driver cuts BOM cost and board area versus BJT-based SLICs. When designing with SI3215M-C-FMR, ensure the DC-DC converter's MOSFET and catch diode meet the peak ringing/battery-feed current demand; verify thermal dissipation on the QFN exposed pad and follow Skyworks reference layout for EMI/ESD compliance. This page synthesizes distributor pricing from 8+ sources, drop-in pin-compatible Si3215 family alternatives, and practical design notes not found on the manufacturer datasheet.
SI32171-C-GM1 - 1-Channel FXS ProSLIC, 42-QFN | Skyworks
The Skyworks SI32171-C-GM1 is a single-channel ProSLIC (Subscriber Line Interface Concept) device in a 42-pin QFN (5x7 mm) package that delivers a complete foreign-exchange-station (FXS) telephony interface with integrated DC-DC controller, low-power ringing, and PCM/SPI host interface. It is rated for -110 V ringing operation, integrates DTMF detection, and supports both 3.3 V and 1.8 V I/O from a 3.3 V supply. A ProSLIC (Subscriber Line Interface Concept) is a highly integrated mixed-signal IC that replaces dozens of discrete components traditionally needed to interface a digital system-on-chip to the analog two-wire telephone subscriber line. In the system hierarchy, the ProSLIC sits between the host SoC (or DSP) and the tip/ring pair, performing the BORSCHT functions (Battery feed, Over-voltage protection, Ringing, Supervision, Coding, Hybrid, and Testing). As an FXS device, it provides the central office side of the analog subscriber loop and is fundamental to VoIP gateways, integrated access devices, and fixed-line terminal adapters. Key features include a complete single-channel FXS solution, automatic battery voltage generation via the integrated DC-DC controller, internal balanced or unbalanced ringing with patented low-power ringing, global programmability for LSSGR/ITU/ETSI line standards, simplified configuration/diagnostics, and DTMF detect on-chip. The 5x7 mm footprint and reduced BOM significantly shrink the PCB area versus discrete line-interface designs. Technically, the Si3217x family uses CMOS mixed-signal design with on-chip high-voltage charge-pump drivers, an integrated DC-DC switching controller that derives optimal battery voltages per line state, and a Sigma-Delta codec pair for the transmit/receive paths. The automatic battery-voltage tracking dynamically minimizes power dissipation in on-hook, off-hook, and ring states, while the low-power ringing architecture avoids the bulky external ring relay in many designs. Typical applications include VoIP residential gateways, xDSL integrated access devices (IADs), cable telephony eMTA, fiber-to-the-home (ONT/ONU) voice ports, fixed wireless terminals, and small-office/home-office analog terminal adapters (ATAs). It is also used in industrial remote-metering and alarm panels where a single analog FXS port is required. When designing with this part, attention must be paid to the DC-DC inductor selection, line-side protection component choice (over-voltage, surge, PTC), and PCB creepage/clearance between the high-voltage traces and the low-voltage digital interface. The exposed thermal pad must be soldered to a sufficient ground pour for heat dissipation during sustained off-hook or ring states. This page synthesizes distributor pricing, drop-in family variants, and practical design notes not found in the manufacturer datasheet alone, enabling faster BOM selection and supply-chain risk assessment for ProSLIC-based FXS designs.
SI8380P-IU - 8-Ch 24V Digital Isolator 2.5kV | Skyworks
The Skyworks Solutions (formerly Silicon Labs) SI8380P-IU is an 8-channel 24 V digital field-input isolator with integrated 2.5 kVRMS safety-rated isolation, housed in a 20-pin SSOP (QSOP) package. It delivers bipolar digital interface support for both sinking and sourcing 24 V inputs at data rates up to 2 Mbps with 250 kbps typical guaranteed throughput and 200 kV/µs common-mode transient immunity (CMTI). The device targets IEC 61131-2 switch types 1, 2, and 3 in PLC and industrial I/O modules. A digital isolator is an integrated circuit that transfers logic signals between two galvanically isolated domains using capacitive, inductive, or optical coupling while blocking DC and low-frequency voltages up to the rated isolation voltage. Isolators sit between the field side (24 V sensors, switches, actuators) and the logic side (microcontroller, SoC) to protect downstream circuitry from transients, ground loops, and fault voltages on the field wiring. Within the broader IC taxonomy, digital isolators belong to interface ICs, which in turn sit under signal conditioning and inter-domain connectivity. Key features of the SI8380P-IU include eight channels in a single package, low 1 mA typical input current per channel, integrated safety-rated isolation eliminating the need for external optocouplers, CMOS-based LED emulator technology enabling bipolar (sinking or sourcing) capability, and no isolated-side VDD required because power is harvested from the input current. The device provides logic-level outputs on the controller side that interface directly with 2.25 V to 5.5 V MCU I/O rails. Architecturally, the SI8380P-IU combines an input-side current-limiting front end, a CMOS-LED emulator that generates an optically-equivalent modulation signal, an integrated isolation barrier using Silicon Labs' proprietary capacitive or transformer coupling, and an output-side demodulator. This topology replaces legacy optocoupler-based designs that required external current-limit resistors, discrete photodiodes, and bulky isolation components, while improving speed, CMTI, and aging behavior. Typical applications include 24 V PLC digital input modules, industrial sensor interfaces (proximity sensors, limit switches, push-buttons), motor-drive digital I/O isolation, building automation input cards, and any system requiring IEC 61131-2 type 1/2/3 input compliance. The wide input voltage range and bipolar capability allow the same part to handle both sourcing (PNP-style) and sinking (NPN-style) field wiring without redesign. When designing with this part, verify that the field-side input current meets the 1 mA typical requirement through proper resistor selection at the input pin. The QSOP-20 footprint is pin-compatible with other Si838x family variants, allowing easy migration to higher channel count or different polarity configurations. Always observe creepage and clearance requirements for the 2.5 kVRMS isolation rating per IEC 60747-17 in the PCB layout. This page synthesizes distributor pricing, drop-in Si838x family alternatives, IEC 61131-2 application context, and PCB layout guidance not consolidated on any single manufacturer or distributor page.
SI8420AD-D-IS - 2-Ch 5kV Digital Isolator, 1Mbps | Skyworks/Silicon Labs
The Skyworks Solutions (formerly Silicon Labs) SI8420AD-D-IS is a general-purpose dual-channel digital isolator rated at 5000 Vrms with a 1 Mbps data rate and 20 kV/us common-mode transient immunity (CMTI), housed in a 16-pin wide-body SOIC (0.295 inch / 7.50 mm width) package. A digital isolator is a semiconductor component which transfers digital signals between two galvanically isolated domains using an on-chip RF carrier or transformer coupling, replacing bulky optocouplers. The SI8420AD-D-IS belongs to the Si84xx family of CMOS digital isolators and sits within the broader isolation IC hierarchy: digital isolator -> signal isolator -> interface IC -> integrated circuit. The wide-body SOIC-16 package provides the 8 mm creepage/clearance required by reinforced insulation standards (UL 1577, IEC 60747-17, CSA 5A) for end-system voltages up to 600 Vrms or 848 Vpk. Key features include 5000 Vrms isolation withstand voltage per UL 1577 for 1 minute, 2 unidirectional channels (1 forward + 1 reverse), 25 kV/us minimum CMTI to suppress fast transients from IGBT/MOSFET switching, 2.7 V to 5.5 V supply range on both sides, and an operating temperature range of -40 C to +125 C. The device draws a low quiescent current on each side and integrates Schmitt-trigger inputs with default high output state (B-side) or default low (A-side) for fail-safe behavior. The Si84xx family uses Skyworks' proprietary RF-coupled isolation architecture with an on-chip CMOS oscillator and differential transformer coupling. This topology delivers higher data-rate, lower power, and tighter channel-to-channel matching than LED-based optocouplers, while eliminating the LED aging and CTR degradation concerns that limit optocoupler lifetime in industrial designs. Typical applications include isolated gate drivers for IGBT/MOSFET half-bridges in motor drives, isolated UART/SPI interfaces in PLCs, isolated analog front ends in medical equipment, and isolated communication links in industrial 24 V systems. The 1 Mbps rate is well matched to I2C, SPI, GPIO and asynchronous serial protocols. When laying out, place decoupling capacitors (typically 0.1 uF) close to each VDD pin, avoid routing high-CMTI traces near the isolation barrier, and respect the 8 mm creepage/clearance requirement across the SOIC-16 wide-body body for reinforced isolation. Designers migrating from optocouplers should verify that the Si84xx default output state matches the application fail-safe condition. This page synthesizes distributor pricing, drop-in Si84xx family alternatives, parametric comparisons and practical layout guidance not found on a single distributor listing.
SI8421AD-D-IS - 5kV 2-Channel Digital Isolator 1Mbps | Silicon Labs
The Silicon Labs SI8421AD-D-IS is a 2-channel general-purpose digital isolator rated at 5000 Vrms withstanding isolation and 20 kV/us minimum common-mode transient immunity (CMTI), housed in a 16-pin wide-body SOIC package (7.5 mm creepage). Each of the two unidirectional isolation channels supports a maximum data rate of 1 Mbps with worst-case propagation delay under 35 ns, and the 'D' option code specifies a default-low fail-safe output state during input power loss. The device operates from a 2.7 V to 5.5 V supply on either side, with independent channel-to-channel ground returns that allow flexible bidirectional signaling across an isolation barrier. A digital isolator is a semiconductor device that transfers logic-level signals across an isolation barrier using on-chip RF-coupled or capacitive-coupled isolation channels instead of optocouplers or transformers. Digital isolators belong to the isolation IC hierarchy: isolator -> interface IC -> signal chain IC -> semiconductor. Compared to legacy optocouplers, CMOS digital isolators offer 10x higher reliability, lower propagation delay, lower power consumption, smaller footprint, and stable parametric performance over temperature and aging. Key features of the SI8421AD-D-IS include Schmitt-trigger inputs for noisy industrial environments, 5 kVrms safety isolation certified by UL, CSA, and VDE, and reinforced insulation rating when used in wide-body SOIC. The device consumes approximately 1.8 mA per channel at 1 Mbps, supports 2.7 V to 5.5 V supply on both VDD1 and VDD2 rails, and operates across the -40 C to +125 C industrial temperature range. The wide-body SOIC-16 package provides 7.5 mm of creepage distance per IEC 60601 / IEC 60747-17 requirements for reinforced insulation. The Si8421 family uses Silicon Labs' proprietary RF-coupled isolation technology, embedding an RF carrier across two capacitive isolation capacitors on each die. This architecture eliminates the LED aging and current-transfer-ratio degradation inherent to optocouplers and achieves typical CMTI performance an order of magnitude above opto-based solutions. The wide-body SOIC package provides the reinforced creepage distance required for 5 kV reinforced insulation in industrial, renewable-energy, and medical systems. Typical applications include isolated SPI/UART interfaces in motor drives, isolated gate-drive signal paths in industrial inverters, isolated data acquisition front-ends, isolated power-supply feedback, and isolated serial communication between MCU and high-voltage subsystems. The 5 kV rating suits 480 Vac industrial bus systems and 600 V solar inverter signal chains where reinforced insulation is mandated. When designing with this device, place 0.1 uF bypass capacitors close to each VDD pin and minimize trace capacitance on the input/output side. The two channels are unidirectional and identically configured; if bidirectional signaling is needed across the same isolation barrier, choose a Si8421 (1 forward + 1 reverse) variant or pair two Si8421AD-D-IS devices in opposing directions. The default-high or default-low output behavior under input power loss must match the system-level fail-safe state. This page synthesizes distributor pricing, parametric drop-in alternatives from the same Si84xx family and cross-brand equivalents, and practical isolation design notes not found in the manufacturer datasheet alone.
SI8422AD-D-IS - 5kV 2-Ch Digital Isolator, 1Mbps | Skyworks
The Skyworks Solutions (formerly Silicon Labs) SI8422AD-D-IS is a 2-channel general-purpose digital isolator rated at 5000 Vrms isolation, supporting data rates up to 1 Mbps in a 16-pin wide-body SOIC (7.50 mm) package. It is one of the slower but very robust members of the Si84xx digital isolator family, built on Skyworks' proprietary RF-coupled isolation technology that uses CMOS drivers and on-chip transformers instead of opto-couplers or LED-based isolation. The -D- variant is the default-LOW output configuration, providing a failsafe LOW state when input power is lost on side 1. A digital isolator is a semiconductor device that transfers logic signals across an electrical isolation barrier using high-frequency carrier modulation rather than direct galvanic connection. Digital isolators (also called galvanic isolators or signal isolators) are a sub-category of interface IC that bridges functional blocks operating at different ground potentials - for example a microcontroller on a 3.3 V logic island and a power-converter gate driver on a high-voltage bus. Compared with traditional optocouplers, digital isolators consume less board area, offer tighter channel-to-channel matching, deliver higher CMTI, and avoid the gradual current-transfer-ratio (CTR) degradation that plagues LEDs. Key features of this device include a typical propagation delay of 35 ns, a worst-case propagation delay skew below 10 ns, a common-mode transient immunity (CMTI) of 20 kV/µs (minimum), and support for a 2.7 V to 5.5 V supply on either side of the barrier. The two independent unidirectional channels are configured as 1 forward + 1 reverse, which matches the channel count of typical SPI or UART isolation but is the minimum viable count for I2C isolation (most I2C designs need bidirectional channels, for which the bidirectional Si8402 family would be required). All parts in the Si8422 family are safety certified by UL, CSA, and VDE; the wide-body SOIC variant supports reinforced insulation per IEC 60747-17 / IEC 62368-1. From an architectural perspective, the Si8422 uses a differential RF carrier across the transformer, with the receiver recovering the data by envelope detection. The two independent channels are isolated by separate transformers that share the same high-voltage isolation barrier, giving true channel-to-channel isolation rather than just channel-to-ground isolation. The wide-body 16-SOIC (0.295 in / 7.50 mm) provides the 8 mm creepage/clearance required for reinforced 5 kVrms insulation in industrial and renewable-energy applications. Typical applications include isolated gate-drive interfaces for industrial motor drives and solar inverters, isolated SPI / UART / GPIO expansion in PLC and industrial control modules, isolated data acquisition front-ends in medical and process-control equipment, isolated RS-485 / RS-232 transceivers, and isolated power-supply feedback paths. The -D- default-LOW output is preferred in fault-tolerant designs where the system should enter a safe state on power loss. Design considerations include pairing the Si8422 with a high-quality 0.1 µF + 1 µF VDD bypass on each side of the barrier, placing it within 2 mm of the IC to suppress switching-edge ringing, and avoiding PCB traces under the device body that would compromise the 8 mm creepage distance. Its wide-body footprint requires 4-layer stack-up planning when used in consumer-grade 2-layer boards. This page combines up-to-date distributor stock and pricing, drop-in alternatives in the same SOIC-16W package, and practical design notes that go beyond the manufacturer datasheet's typical-application section.