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SI5345A-D04594-GM

SI5345A-D04594-GM - 10-Output Jitter Attenuator | Skyworks

The Skyworks (formerly Silicon Labs) SI5345A-D04594-GM is a 10-channel, any-frequency, any-output jitter attenuator and clock multiplier serving as a high-performance timing reference for communications infrastructure, broadcast video, and professional audio systems. The device integrates a MultiSynth fractional-N divider array that independently synthesizes up to 10 differential or single-ended clocks from a single reference input, with maximum output frequency of 1.028 GHz and sub-200 femtosecond typical RMS jitter. The custom configuration code (-D04594-) defines a factory- or user-programmed frequency plan optimized for the target application. A clock synthesizer / jitter attenuator is a timing integrated circuit that takes a single reference input (crystal, oscillator, or recovered clock) and produces multiple low-jitter output frequencies. These devices sit in the timing-tree hierarchy: clock IC -> clock generator -> frequency synthesizer -> PLL (phase-locked loop). They are commonly used in place of multiple crystal oscillators and PLLs to reduce board area, BOM cost, and EMI leakage. Key features of this Si5345 variant include 10 independently configurable outputs, per-output frequency synthesis up to 1.028 GHz, programmable output formats (LVDS, LVPECL, HCSL, CMOS, CML), digital jitter attenuation bandwidth programming via ClockBuilder Pro, and independent output enable / frequency scaling registers. The 64-pin QFN exposed-pad package provides a low thermal resistance path to the PCB ground plane. Internally the Si5345 uses two-stage MultiSynth architecture: a low-jitter integer-N PLL locks to the reference, then each output passes through a fractional-N divider that synthesizes arbitrary rational frequency ratios. Loop bandwidth is digitally programmable (typical 0.1 Hz to 1 kHz) for optimized jitter transfer in PLL cleanup, SONET/SDH, or OTN applications. Typical applications include wireless base-station timing, OTU/SONET line cards, broadcast SDI/HD-SDI reference clocks, FPGA / ASIC SerDes reference inputs, and high-end professional audio clocks. The 1.7 V to 3.47 V core supply and 1.8 V / 3.3 V IO supplies allow direct interface to most modern FPGAs, SoCs, and ASICs without level translation. When designing with this part, configure the device once using ClockBuilder Pro, then export the resulting register file and NVM image for production programming. Maintain a clean PCB ground return under the exposed pad and follow the Skyworks Si5345 Reference Manual layout recommendations.

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SI5345A-D04594-GMR

SI5345A-D04594-GMR - 10-Output Jitter Attenuator | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI5345A-D04594-GMR is a factory-programmed 10-output, any-frequency (< 1028 MHz) jitter attenuator clock IC housed in a 64-pin QFN-EP (9x9 mm) package with exposed thermal pad. The Si5345 family uses a fourth-generation MultiSynth divider technology and a low-jitter VCO to deliver industry-leading phase noise and sub-200 fs RMS jitter while supporting frequencies up to 1028 MHz on each of its ten differential or single-ended outputs. A clock synthesizer (sometimes called a clock generator or frequency synthesizer) is an IC that derives one or more precise output frequencies from a single reference source. Within the broader hierarchy, the SI5345A belongs to the clock timing IC family, which sits under integrated circuits and plays a critical role in synchronous digital systems: SOC > integrated circuit > clock & timing IC > clock generator > frequency synthesizer > jitter attenuator. Jitter attenuators add a low-bandwidth PLL on top of a synthesizer to filter reference-clock noise before redistribution to downstream PHYs, ADCs, DACs, and FPGAs. Key features of this variant include ten independently configurable output formats (LVDS, LVPECL, HCSL, CML, CMOS, HSTL, SSTL), an I2C control interface, 1.71 V to 1.89 V core supply range, and a -40 C to +85 C industrial operating range. The -D04594-GM code denotes a custom factory-programmed frequency plan generated by Skyworks ClockBuilder Pro, which removes the burden of in-system NVM programming. Architecturally, the Si5345A uses a fractional-N MultiSynth divider per output, allowing non-integer frequency translations without compromising phase noise. The internal low-jitter VCO and digitally programmable loop bandwidth enable optimization for each application's jitter transfer characteristics. This makes the SI5345A well suited to reference clock generation for 100G/400G Ethernet PHYs, OTN/SONET/SDH line cards, FPGA transceiver reference chains, wireless base-station timing, and high-end broadcast video. Typical applications include 100G/400G Ethernet switches, OTN/SONET/SDH line cards, FPGA/ASIC reference clock trees, wireless base-station timing boards, and broadcast video routers. The wide output format support and low jitter make it a flexible single-chip timing solution for mixed-signal boards that would otherwise require multiple oscillators or clock generators. When designing with the SI5345A, place the 0.1 uF + 10 uF decoupling network as close as possible to each supply pin and expose the e-pad with at least 25 thermal vias to an internal ground pour. Use the ClockBuilder Pro configuration file attached to your -D04594 order code to load the pre-configured frequency plan into the IC; do not re-program the NVM unless intentionally overriding the factory image. This page synthesizes verified distributor pricing, drop-in compatible alternatives, and practical PCB layout notes that are not aggregated on the manufacturer datasheet alone.

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SI5345A-D06546-GM

SI5345A-D06546-GM - 10-Output Any-Freq Jitter Attenuator | Silicon Labs

The Silicon Labs (Skyworks) SI5345A-D06546-GM is a low-jitter, 10-output, any-frequency (<1028 MHz) clock multiplier and jitter attenuator housed in a 64-pin QFN (10x10 mm) package with exposed pad. This device delivers any combination of output frequencies up to 1.028 GHz on each of its 10 differential or single-ended outputs, all synthesized from a single reference input. What is a clock multiplier/jitter attenuator? A clock multiplier is a timing-IC block that synthesizes one or more higher-frequency output clocks from a lower-frequency reference. A jitter attenuator is a PLL (phase-locked loop) that uses a narrow loop bandwidth to filter reference-clock phase noise before re-synthesizing a clean output. Together, these functions provide a low-noise, deterministic timing source for systems where the upstream reference is noisy (recovered clocks, CPLD/FPGA SERDES, PHY clocks). The SI5345A belongs to the clock generator family hierarchy: clock IC -> clock generator/jitter cleaner -> PLL-based clock multiplier -> timing IC -> analog mixed-signal IC -> semiconductor IC. Key features include a digitally programmable jitter-attenuation bandwidth for application-level optimization, sub-200 fs typical RMS jitter (12 kHz-20 MHz), integrated fractional-N PLLs with multi-mode DSPLL architecture, and I2C/SPI host control via ClockBuilder Pro software. Outputs support LVPECL, LVDS, HCSL, CML, CMOS, and SSTL signaling, eliminating the need for discrete level translators when interfacing with FPGAs, ASICs, and PHYs. Architecturally, the SI5345A uses Silicon Labs' MultiSynth technology that pairs one high-frequency DSPLL with multiple fractional dividers, allowing any output to take any frequency from 1 Hz to 1.028 MHz independently. The on-chip voltage regulators accept a single 1.8V/3.3V supply rail and generate all internal voltages, simplifying PCB power design. Typical applications include carrier-grade networking (SyncE, IEEE 1588), data-center switches/routers, OTN/optical line cards, broadcast video reference timing, GPON/PON OLT, broadband DSLAM, and 100G/200G/400G Ethernet PHY clocking. The 10 independent outputs let one device replace multiple crystals and PLLs in a typical timing tree. Design tip: route the reference input (XA/XB) and the high-frequency serial host signals (I2C/SPI/GPIO) with controlled-impedance traces and shielded ground pours to preserve the low-jitter performance; place the on-chip regulator bypass capacitors within 50 mils of the supply pins. Wideband scope probes on jitter-cleaned outputs verify compliance with the relevant jitter mask (e.g., G.8262, PCIE Gen4). This page synthesizes distributor pricing, drop-in Si5345/Si5344/Si5342 family alternatives, and practical design notes not found in any single manufacturer datasheet or distributor listing. PARAGRAPH_PLACEHOLDER_TEMP_DELETE

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SI5345A-D10713-GM

SI5345A-D10713-GM - 10-Output Jitter Attenuator | Skyworks

The Skyworks SI5345A-D10713-GM is a low-jitter, 10-output, any-frequency (< 1028 MHz) any-output jitter attenuator clock multiplier housed in a 64-pin VFQFN exposed-pad package. It is a factory-customized variant of the Si5345A platform, where the '-D10713-GM' suffix designates a specific pre-programmed register setting configured through ClockBuilder Pro for the customer's target frequency plan. The device integrates a fourth-generation DSPLL with MultiSynth technology to deliver sub-100 fs typical RMS jitter (12 kHz-20 MHz) and four independent DSPLL lanes that can each synthesize non-integer-related fractional output frequencies. An any-frequency jitter attenuator belongs to the clock-tree-on-a-chip product family - a class of timing IC that consolidates multiple frequency synthesis, jitter cleaning, and level translation functions into a single silicon device. Within the broader taxonomy, it sits as clock synthesizer / jitter cleaner > clock generator > timing IC > semiconductor. These parts are the modern successors to legacy XO + PLL designs and are critical wherever a system clock must be regenerated with extremely low phase noise for high-speed serial links, RF data converters, and FPGA/ASIC reference inputs. Key features include 10 differential or single-ended clock outputs, per-output frequency synthesizers from 1 Hz up to 1028 MHz, an on-chip EEPROM for storing the factory frequency plan, an I2C/SPI control interface, and a digitally programmable jitter-attenuation bandwidth. The Si5345A serves four independent DSPLL lanes from up to two input references, enabling hitless reference switching and holdover when the primary reference is lost. The 64-VFQFN exposed pad (Ravenna-grade thermal pad) supports reflow soldering to a 9 mm x 9 mm PCB land pattern with a thermal resistance consistent with industrial 85 C operation. Architecturally, the device combines a low-noise fractional-N PLL core, MultiSynth fractional output dividers, and per-output driver strength/slew programming. Skyworks' DSPLL technology allows the loop bandwidth to be tuned from 0.1 Hz to 4 kHz depending on the application's tolerance for input jitter versus wander, letting the designer trade off between tracking and cleaning. This level of programmability - combined with the factory customization suffix - means each '-Dxxxxx-GM' part number represents a complete clock-tree solution that drops into the same PCB footprint as a generic Si5345A blank. Typical applications include 100G/400G Ethernet line-card reference clocks, OTU/SONET/SDH equipment timing, OTN and PTP grandmaster clocks, broadband wireless infrastructure such as 5G base stations, broadcast video and professional audio systems, and FPGA/ASIC SerDes reference generation. The wide output frequency range up to 1028 MHz covers virtually every common data converter, processor, and transceiver reference in a system. When laying out the SI5345A-D10713-GM, use a 4-layer PCB with a continuous ground island under the exposed pad; an unbroken thermal pad with multiple stitched vias is required for specified 1 ps period jitter. Decouple each VDD pin with a 0.1 uF X7R placed within 2 mm of the pin, and route each output trace as a 50 ohm (single-ended) or 100 ohm differential transmission line with no stubs. Always configure the device with the ClockBuilder Pro project file matching the ordered part suffix - using a generic Si5345A blank configuration will produce incorrect output frequencies.

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SI5345B-B-GM

SI5345B-B-GM 350 MHz Clock Synthesizer | Skyworks Solutions

Skyworks Solutions SI5345B-B-GM is a programmable clock synthesizer and jitter attenuator with ten outputs, operation up to 350 MHz, and a 64-pin VFQFN exposed-pad package. It accepts input frequencies from 8 MHz to 750 MHz according to the retrieved distributor data. The device is designed for systems requiring any-frequency clock generation, low-jitter outputs, and configurable jitter attenuation. A clock synthesizer is a timing integrated circuit that derives one or more deterministic clock outputs from a reference or input oscillator. Clock synthesizers, phase-locked loops, and jitter attenuators belong to the clock-and-timing IC hierarchy used to synchronize processors, converters, serializers, and communications equipment. The SI5345B family combines clock generation and jitter attenuation in one configurable device. Key verified features include ten outputs, a maximum output frequency of 350 MHz, digitally programmable jitter-attenuation bandwidth, and any-frequency operation. Configuration is handled with ClockBuilder Pro, allowing a board-specific clock tree to be prepared before deployment. Programmable non-volatile memory allows the device to restart with a known configuration, reducing reliance on an external controller after power-up. The SI5345B architecture uses fourth-generation DSPLL and MultiSynth technologies identified in the manufacturer datasheet. These technologies support jitter attenuation and flexible frequency generation. The distinction between SI5345A, SI5345B, SI5345C, and SI5345D variants must be checked against the manufacturer configuration and ordering information before substitution because exact programming and feature compatibility are not established by the supplied search results. Typical uses include high-speed communications, optical-networking equipment, servers, storage systems, test and measurement instruments, and FPGA or processor clock trees. In each case, low-jitter reference-derived outputs can reduce timing uncertainty, while ten outputs can consolidate multiple clock requirements into one timing device. Placement and power implementation remain important because the exposed pad must dissipate heat and all supply pins require appropriate decoupling. Use the manufacturer ClockBuilder Pro configuration workflow and verify input, output, reference, pin, and NVM settings before release to production. Board design should reserve the exposed-pad land pattern, provide continuous low-impedance ground and supply connections, and avoid long uncontrolled clock traces. This page combines verified distributor availability, manufacturer family information, cross-reference findings, and design guidance while explicitly identifying parameters that require confirmation from the manufacturer datasheet.

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SI5345B-D-GM

SI5345B-D-GM - 10-Output Jitter Attenuator | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI5345B-D-GM is a 10-channel, any-frequency, any-output jitter attenuator and clock multiplier housed in a 64-pin QFN exposed-pad package. It integrates fourth-generation DSPLL and MultiSynth technologies to synthesize up to ten independent output frequencies from a single reference, with output rates up to 350 MHz and 0.09 ps RMS phase jitter typical performance. The device operates from a 1.8 V / 3.3 V supply and is configurable via I2C/SPI with on-chip non-volatile memory. A jitter attenuator is a clock-tree building block that takes a potentially noisy reference signal and produces an ultra-clean clock that meets strict phase-noise and jitter budgets. Within the broader timing hierarchy it sits above simple crystal oscillators (XO) and below fully integrated timing cards; the SI5345B family specifically targets applications where any-frequency flexibility and sub-100-fs-class jitter are required simultaneously, such as 10G/25G/100G Ethernet PHYs, OTN framer/mapper ASICs, and synchronous-Ethernet line cards. Key features include any-output frequency from 0.001 MHz to 350 MHz, programmable output formats (LVCMOS, LVDS, LVPECL, HCSL, CML), digitally programmable jitter-attenuation bandwidth, and a fractional-feedback architecture that delivers true any-frequency synthesis without requiring external VCXO components. Each of the ten outputs can be set to different logic levels, divider ratios, and enable states through the serial interface, replacing multiple single-purpose oscillators and buffers on dense telecom boards. The architecture combines a fourth-generation DSPLL core with ten independent MultiSynth fractional dividers, allowing each output to be tuned to non-integer ratios from a common reference without compromising phase noise. Internal loop-filter components, EEPROM-backed default configuration, and per-output skew adjustment further simplify board design while keeping the BOM small. Typical applications include IEEE 1588 packet-clock synchronization, OTU2/OTU4 framer line cards, 100G optical module reference clocks, broadcast video reference generation, and FPGA transceiver reference clocking. The Skyworks ClockBuilder Pro software lets designers generate a register map for any combination of input/output frequencies and load it into the on-chip NVM so the device powers up configured. When laying out the Si5345B, treat the exposed pad as the primary thermal and grounds return path, place both 1.8 V and 3.3 V decoupling within 2 mm of their respective pins, and keep output traces at matched lengths (within 25 mil) for LVDS/LVPECL pairs to preserve jitter performance at high toggle rates. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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SI5351A-B-GTR

SI5351A-B-GTR - 200MHz I2C CMOS Clock Generator, 2-Output, MSOP-10 | Skyworks

The Skyworks (formerly Silicon Labs) SI5351A-B-GTR is an I2C-programmable any-frequency CMOS clock generator that synthesizes up to two independent non-integer-related frequencies from 8 kHz to 160 MHz, with a maximum output frequency of 200 MHz on each of its two LVCMOS outputs, housed in a 10-pin MSOP package. The device integrates two MultiSynth fractional dividers driven by a high-frequency PLL and accepts a standard 25 MHz or 27 MHz crystal reference, enabling flexible frequency planning without external VCXO components. A clock generator is a semiconductor IC that produces one or more precise timing signals used to synchronize logic in digital systems. The SI5351A-B-GTR belongs to the broader category of timing ICs, which sits between frequency synthesizers (PLL/VCO blocks) and standard fixed-frequency oscillators. Within the timing hierarchy, it is classified as a programmable CMOS clock generator, offering finer frequency resolution than a fixed-frequency XO and lower cost and complexity than a full VCXO/PLL solution. Engineers reach for the Si5351 family when fixed oscillators cannot deliver the exact multiple frequencies a system requires, especially in mixed-signal designs, SDR front-ends, and embedded video/multi-rate audio applications. Key features include independent per-output MultiSynth fractional-N dividers, user-configurable drive strength (2 mA, 4 mA, 6 mA, 8 mA), a spread-spectrum option for EMI reduction, and ultra-low jitter measured at 70 ps pk-pk typical. The two LVCMOS outputs support independently selectable output enable and phase-offset adjustment, allowing fine skew control between clock domains. The device operates from a single 2.5 V or 3.3 V supply with low quiescent current draw and integrates an I2C interface (up to 400 kHz) for in-system register configuration. The architecture is built around two PLLs and per-output MultiSynth fractional dividers that decouple output frequencies from integer-multiple relationships, enabling any-rate-any-output synthesis. The internal VCO is calibrated automatically, eliminating manual loop-filter components and supporting the wide 8 kHz to 200 MHz output range from a single silicon revision. Typical applications include amateur-radio SDR QRP transceivers, FPGA reference clocks, multi-rate audio interface clocks (e.g., 44.1/48/96 kHz families), microcontroller clock-tree generation, and HDMI/USB peripheral timing. When designing with this device, ensure the reference crystal load capacitance matches the onboard load capacitors, and follow the ClockBuilder Pro configuration utility to generate the I2C register map for non-standard frequency plans.

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SI5391A-A-GM

SI5391A-A-GM - 12-Output Ultra-Low-Jitter Clock Generator | Skyworks

The Skyworks Solutions SI5391A-A-GM is a 12-output, any-frequency, any-output ultra-low-jitter clock generator housed in a 64-pin VFQFN exposed-pad package. It supports a maximum output frequency of 1028 MHz, achieves phase jitter as low as 0.075 ps RMS, and operates from a single 1.8 V core supply with 3.3 V tolerant I/O. The device combines MultiSynth fractional and integer synthesis blocks to deliver four reference inputs, an on-chip VCO, and in-system programmable non-volatile memory for power-up deterministic configuration. A clock generator is a timing IC that derives one or more synchronized output frequencies from a single reference and distributes them as low-jitter CMOS, HCSL, LVDS, or LVPECL clocks to system sub-blocks. Clock generators sit in the broader timing hierarchy: oscillator -> PLL -> clock synthesizer -> clock generator -> clock buffer/jitter cleaner. The SI5391A-A-GM occupies the high-performance end of the clock-generator taxonomy, merging low-jitter PLL jitter-cleaning with MultiSynth fractional synthesis - it functions simultaneously as a synthesizer and a jitter-cleaner. Key specifications include 95 fs RMS typical phase jitter (12 kHz-20 MHz), 1.5 ps peak-to-peak period jitter, four differential reference inputs (XTAL, CMOS, LVDS, HCSL, LVPECL), twelve configurable output drivers, integrated LDO regulators, and I2C/SPI host control. Loss-of-lock and loss-of-reference detection support broadcast video, OTN, and SONET/SDH holdover transitions. The architecture pairs a high-Q analog MultiSynth VCO with four fractional-output MultiSynth blocks, allowing independent, non-coupled output frequencies up to 1028 MHz. Each output driver independently supports CMOS, HCSL, LVDS, and LVPECL standards through register configuration, eliminating external level-translation components. Typical applications include 100G/400G optical-module line-card clock trees, broadcast video reference clock fan-out, wireless baseband timing, OTN/SONET/SDH line cards, FPGA and ASIC reference-clock distribution in test & measurement ATE, and server/storage PCIe Gen 5 reference-clock generation. When designing with the SI5391A-A-GM, use Skyworks ClockBuilder Pro to generate the personalized configuration script because each shipping variant is factory pre-programmed with a unique NVM image. Plan PCB layout to keep the 64-VFQFN exposed pad soldered to a continuous low-thermal-resistance ground plane. This page synthesizes authoritative datasheet specs, current distributor pricing as of 2026-10-10, drop-in same-package alternatives, and AEO-oriented engineering content not found in the Si5391 datasheet alone.

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SI5391P-A-GM

SI5391P-A-GM - Ultra-Low Jitter 12-Output Clock Generator

The Skyworks Solutions (formerly Silicon Labs) SI5391P-A-GM is a precision-calibration ultra-low-jitter clock generator IC delivering 12 outputs from a single 64-pin VQFN exposed-pad package. According to the manufacturer's datasheet, it supports a maximum output frequency of 312.5 MHz and provides RMS phase jitter of 69 fs (typical) at 156.25 MHz and 312.5 MHz carrier frequencies, calibrated for data-converter, networking, and wireless infrastructure applications. A clock generator is a frequency-synthesis component that produces one or more precisely controlled timing references from a single input reference. Clock generators occupy the timing hierarchy above quartz crystals (which provide only a single fixed frequency) and below PLLs that lock to external references. The SI5391P belongs to the broader family of programmable clock generators that internalize MultiSynth fractional-divider technology to generate "any-frequency, any-output" combinations, eliminating discrete oscillator inventory in complex multi-rail designs. Key features of the SI5391P-A-GM include a 48 MHz crystal reference input, support for three independent clock domains, I2C/SPI serial configuration with non-volatile memory for default configuration restore, and precision calibration that linearizes the internal MultiSynth to achieve 95 fs maximum phase jitter across the supported frequency plan. Each output can be independently set to LVPECL, LVDS, HCSL, CMOS, or SSTL levels through software, allowing one part to replace multiple discrete XOs in PCB layout. Architecturally, the device combines a low-noise PLL, four MultiSynth fractional dividers, and per-output level translators. The MultiSynth architecture achieves 0 ppm frequency synthesis error while maintaining sub-100 fs RMS jitter, which directly translates to bit-error-rate improvements in 100G/400G optical transceivers and to ENOB headroom in high-speed ADCs. The 1 GHz internal VCO is divided down through MultiSynth blocks rather than traditional sigma-delta modulators, avoiding spurs in sensitive spectrum windows. Typical applications include 100G/400G Ethernet PHY line cards, OTU4 long-haul optical module reference clocks, FPGA and ASIC fabric clocks, JESD204B/C SerDes reference generation for high-speed data converters, wireless base-station timing distribution, and broadcast video reference generation. Its low intrinsic jitter makes it suitable as a master clock for RF DACs and ADCs where aperture jitter limits signal-to-noise ratio at IF frequencies above 1 GHz. When designing with the SI5391P, ensure the AC-coupling capacitor network on each differential output matches the 100-ohm termination scheme and that the PCB layout keeps the 48 MHz crystal traces short and symmetric. Decoupling the AVDD pins with both bulk and high-frequency ceramic capacitors within 2 mm of the exposed pad is critical to achieving datasheet jitter specifications.

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SI5394A-A-GM

SI5394A-A-GM - 4-Output Jitter Attenuator, 69fs | Skyworks

The Skyworks (formerly Silicon Labs) SI5394A-A-GM is a 4-output ultra-high-performance jitter attenuator that combines fourth-generation DSPLL and MultiSynth technologies to deliver 69 fs of phase jitter, supporting any-frequency clock generation and reference-clean clocking for next-generation serial-data systems. Housed in a 44-pin VFQFN Exposed Pad package, the device provides up to 12.8 GHz maximum output frequency per the DigiKey listing and includes 1 PLL with internal reference support. A jitter attenuator is a clock-tree building block placed between a noisy reference oscillator (or recovered clock) and a downstream high-speed transceiver, ADC, or serializer/deserializer (SerDes). The Si5394 integrates a digital PLL (DSPLL) with a MultiSynth fractional output divider tree, allowing it to generate non-integer-related output frequencies from almost any input reference while aggressively attenuating jitter across a wide loop bandwidth. As a member of the clock & timing hierarchy, it sits above simple crystal oscillators and below the system-level timebase, providing a programmable timing layer. The headline performance numbers are 69 fs RMS phase jitter (12 kHz-20 MHz integration band), 12.8 GHz maximum output frequency, and 12-channel/4-output flexibility. The device also supports free-run, synchronous, and holdover operating modes plus enhanced hitless switching between input references, minimizing phase transients during reference changes. Programming is done through a serial interface with in-circuit programmable non-volatile memory (NVM) so the device always powers up with a known frequency plan. The Si5394A-A-GM is targeted at 56G PAM4 SerDes, OTN/optical transport, high-speed data-conversion reference clocks, broadcast video, and military/aerospace timing systems. The combination of sub-100 fs jitter and high output frequency makes it one of the highest-performance integrated jitter cleaners on the market. When designing with this part, engineers should follow the ClockBuilder Pro configuration tool from Skyworks/Silicon Labs and respect the PCB layout note that all supply pins require local decoupling, while the exposed pad must be soldered to a continuous ground plane for thermal and electrical integrity. This page synthesizes distributor pricing, same-package cross-references, and practical design notes not found in the manufacturer datasheet.

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SI8244BB-C-IS1

SI8244BB-C-IS1 - 2-Channel Isolated Class-D Driver

The Silicon Labs SI8244BB-C-IS1 is a two-channel isolated Class-D audio driver with a precision dead-time generator, a 16-SOIC package, and an operating supply range of 4.5 V to 5.5 V. It is designed for isolated high-side and low-side gate-drive arrangements in high-power audio systems, including power stages above 30 W according to the manufacturer family description. An isolated gate driver is an interface and power-management semiconductor that transfers switching-control signals across a galvanic-isolation barrier while driving external MOSFET gates. The SI8244BB family combines two isolated drivers in one package, enabling compact isolated audio power stages, reduced ground-loop risk, and separation between control and power domains. Its high-side and low-side organization suits full-bridge Class-D topologies. The key verified feature set includes PWM input, a high-precision linear programmable dead-time generator, 1 µs dead-time capability, high latchup immunity greater than 100 V/ns, and up to 1500 Vrms output-to-output isolation. The verified operating-temperature range is -40 °C to 125 °C. The device is supplied in a 16-SOIC package, also identified as MS-012AC in distributor documentation. The precision dead-time function helps the designer balance low total harmonic distortion against switching efficiency by controlling the non-overlap interval between MOSFET gate commands. Exact propagation-delay, output-current, supply-current, and channel-polarity values were not supplied in the verified source set, so these parameters are not inferred here. The -IS1R variant is documented as RoHS compliant, but separate C-IS1 environmental declarations were not provided. Typical uses include isolated Class-D audio amplifiers, full-bridge speaker power stages, isolated digital-to-analog audio systems, and industrial audio equipment where control-side and power-side grounds must remain separated. The Si824x family datasheet specifically targets high-power audio applications above 30 W. The driver should be paired with appropriately rated external MOSFETs, gate resistors, isolation components, and a thermal plan based on the final power-stage dissipation. For PCB implementation, preserve the isolation creepage and clearance required by the final working voltages and certification target. Keep high-current gate-drive loops compact, connect each driver output to its corresponding MOSFET gate through the recommended resistor network, and provide local bypassing at the device supply pins. Do not infer a direct replacement from package similarity alone; verify dead-time, propagation delay, UVLO, channel polarity, isolation rating, and output-drive current against the original design. This page combines the verified manufacturer family datasheet, distributor package data, and cross-reference evidence for the SI8244BB-C-IS1. It separates documented facts from unresolved procurement and electrical details, providing a practical basis for Class-D gate-drive design, sourcing review, and footprint-compatible replacement investigation.

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SI8244BB-C-IS1R

SI8244BB-C-IS1R - 2-Channel Isolated Class-D Driver (Tape & Reel)

The Silicon Labs SI8244BB-C-IS1R is a two-channel isolated Class-D audio driver with a precision dead-time generator, a 16-SOIC package, and an operating supply range of 4.5 V to 5.5 V. It is designed for isolated high-side and low-side gate-drive arrangements in high-power audio systems, including power stages above 30 W according to the manufacturer family description. An isolated gate driver is an interface and power-management semiconductor that transfers switching-control signals across a galvanic-isolation barrier while driving external MOSFET gates. The SI8244BB family combines two isolated drivers in one package, enabling compact isolated audio power stages, reduced ground-loop risk, and separation between control and power domains. Its high-side and low-side organization suits full-bridge Class-D topologies. The key verified feature set includes PWM input, a high-precision linear programmable dead-time generator, 1 µs dead-time capability, high latchup immunity greater than 100 V/ns, and up to 1500 Vrms output-to-output isolation. The verified operating-temperature range is -40 °C to 125 °C. The device is supplied in a 16-SOIC package, also identified as MS-012AC in distributor documentation. The precision dead-time function helps the designer balance low total harmonic distortion against switching efficiency by controlling the non-overlap interval between MOSFET gate commands. Exact propagation-delay, output-current, supply-current, and channel-polarity values were not supplied in the verified source set, so these parameters are not inferred here. The -IS1R variant is documented as RoHS compliant, but separate C-IS1 environmental declarations were not provided. Typical uses include isolated Class-D audio amplifiers, full-bridge speaker power stages, isolated digital-to-analog audio systems, and industrial audio equipment where control-side and power-side grounds must remain separated. The Si824x family datasheet specifically targets high-power audio applications above 30 W. The driver should be paired with appropriately rated external MOSFETs, gate resistors, isolation components, and a thermal plan based on the final power-stage dissipation. For PCB implementation, preserve the isolation creepage and clearance required by the final working voltages and certification target. Keep high-current gate-drive loops compact, connect each driver output to its corresponding MOSFET gate through the recommended resistor network, and provide local bypassing at the device supply pins. Do not infer a direct replacement from package similarity alone; verify dead-time, propagation delay, UVLO, channel polarity, isolation rating, and output-drive current against the original design. This page combines the verified manufacturer family datasheet, distributor package data, and cross-reference evidence for the SI8244BB-C-IS1R. It separates documented facts from unresolved procurement and electrical details, providing a practical basis for Class-D gate-drive design, sourcing review, and footprint-compatible replacement investigation.

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SI8244CB-D-IS1

SI8244CB-D-IS1 - 2-Channel 4A Audio Driver | Skyworks

The Skyworks Solutions SI8244CB-D-IS1 is a dual-channel isolated audio gate driver for Class D amplification, with a 4 A peak output current and a 16-pin SOIC package. According to the available manufacturer and distributor data, it is intended for high-power audio systems above 30 W and supports a maximum supply voltage of 24 V. What is an isolated audio gate driver? An isolated audio gate driver is a specialized interface and power-management IC that transfers gate-control signals while providing galvanic isolation between control circuitry and a power stage. It belongs to the gate-driver family within the broader Class D audio-driver hierarchy, combining signal conditioning, level translation, isolation, and high-current output drive in one package. The SI824x family is designed to support high-fidelity Class D amplification, with the SI8244 variant providing 4.0 A peak output current for driving external MOSFET gate networks. The available data identifies a 2-channel configuration, 2.5 kV isolation capability, and operation with a maximum 24 V supply. The Skyworks product page specifically highlights precise dead-time adjustment as a way to balance total harmonic distortion and system efficiency. Typical applications include high-power stereo audio amplifiers, subwoofer amplifiers, professional audio equipment, home-theater systems, and other isolated gate-drive circuits. Isolation can help reduce ground-reference problems when the audio power stage and control electronics operate at different potentials. The two-channel structure also allows one driver IC to support complementary or multi-channel Class D output stages. Designers should verify the exact input logic levels, propagation delay, quiescent current, enable behavior, isolation ratings, and external MOSFET requirements against the manufacturer datasheet before production. Gate traces must be short and properly terminated, and the power-stage layout must minimize loop area to preserve switching performance and reliability.

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SI8244CB-D-IS1R

SI8244CB-D-IS1R - 2-Channel 4A Audio Driver | Skyworks (Tape & Reel)

The Skyworks Solutions SI8244CB-D-IS1R is a dual-channel isolated audio gate driver for Class D amplification, with a 4 A peak output current and a 16-pin SOIC package. According to the available manufacturer and distributor data, it is intended for high-power audio systems above 30 W and supports a maximum supply voltage of 24 V. What is an isolated audio gate driver? An isolated audio gate driver is a specialized interface and power-management IC that transfers gate-control signals while providing galvanic isolation between control circuitry and a power stage. It belongs to the gate-driver family within the broader Class D audio-driver hierarchy, combining signal conditioning, level translation, isolation, and high-current output drive in one package. The SI824x family is designed to support high-fidelity Class D amplification, with the SI8244 variant providing 4.0 A peak output current for driving external MOSFET gate networks. The available data identifies a 2-channel configuration, 2.5 kV isolation capability, and operation with a maximum 24 V supply. The Skyworks product page specifically highlights precise dead-time adjustment as a way to balance total harmonic distortion and system efficiency. Typical applications include high-power stereo audio amplifiers, subwoofer amplifiers, professional audio equipment, home-theater systems, and other isolated gate-drive circuits. Isolation can help reduce ground-reference problems when the audio power stage and control electronics operate at different potentials. The two-channel structure also allows one driver IC to support complementary or multi-channel Class D output stages. Designers should verify the exact input logic levels, propagation delay, quiescent current, enable behavior, isolation ratings, and external MOSFET requirements against the manufacturer datasheet before production. Gate traces must be short and properly terminated, and the power-stage layout must minimize loop area to preserve switching performance and reliability.

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SI8380P-IU

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.

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SI8420AD-D-IS

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.

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SI8421AD-D-IS

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.

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SI8422AD-D-IS

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.

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SI8422BB-D-IS

SI8422BB-D-IS - 2.5 kV 2-Channel Digital Isolator | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI8422BB-D-IS is a 2-channel CMOS digital isolator rated to 2.5 kV RMS with 1 forward and 1 reverse channel, supporting data rates up to 150 Mbps and worst-case propagation delays of less than 10 ns in an 8-pin narrow-body SOIC package. What is a digital isolator? A digital isolator is a semiconductor device that transfers logic-level signals across an galvanically isolated barrier using high-frequency RF coupling, capacitive coupling, or giant-magnetoresistance (GMR), replacing legacy optocouplers. The Si84xx family belongs to the digital isolator category, which itself is part of interface ICs in power management and signal-chain hierarchies. Unlike optocouplers, Si84xx parts use CMOS differential signaling and offer 10x faster propagation, 10x lower power, and superior CMTI. Key features: the SI8422BB-D-IS integrates Skyworks' proprietary RF-coupled isolation technology with on-chip 2.5 kV RMS isolation, 20 kV/µs typical common-mode transient immunity (CMTI), and 2.70 V to 5.5 V wide supply operation on both sides. The device is fail-safe selectable (default low or default high) to control output state during input power loss, and operates across the -40 °C to +125 °C industrial temperature range. The 8-SOIC narrow-body footprint enables drop-in optocoupler replacement on existing PCB designs. Architecturally, the Si8422 employs an RF carrier modulated by the input data on each side, demodulated across an integrated isolation barrier, then reconstructed at the destination. Both transmitter and receiver sides are independently powered (VDD and VISO rails), providing full galvanic isolation for SPI, I2C, GPIO, or general-purpose logic isolation in industrial bus applications. The CMOS architecture eliminates the LED aging and current-transfer-ratio drift inherent to optocouplers. Typical applications include isolated SPI between MCU and motor-driver gate driver, isolated UART/RS-485 transceivers, industrial field-bus interfaces, isolated gate-drive bias for SiC/IGBT half-bridges, and automotive CAN-FD isolation. The Si8422BB-D-IS is also AEC-Q100 qualified per the manufacturer's data sheet, making it suitable for automotive powertrain and BMS use cases. Design consideration: place 0.1 µF bypass capacitors close to both VDD and VISO pins, and ensure that input and output channels are referenced to their respective grounds (GND1 and GND2) - never tie these grounds together at the IC. Per Skyworks' data sheet, the Si8422BB-D-IS shares the Si8410/Si8420/Si8421 8-SOIC footprint, simplifying PCB reuse across channel-count variants. This page synthesizes drop-in alternatives (Si8422 family variants and TI ISO7221x/ISO7721x pin-compatible parts), distributor pricing as of 2026-10-06, and practical design notes not found in the manufacturer's data sheet.

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SI8423AD-D-IS

SI8423AD-D-IS - 2-Channel Digital Isolator, 5kV, 1Mbps | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI8423AD-D-IS is a dual-channel digital isolator with 5000 Vrms galvanic isolation, two unidirectional isolation channels (both forward, no reverse channel), 1 Mbps NRZ data rate, and 20 kV/µs minimum common-mode transient immunity (CMTI), housed in a 16-pin wide-body SOIC (0.295" / 7.50 mm) package. A digital isolator is a semiconductor device that uses high-voltage capacitive or magnetic coupling (rather than optocoupling) to transmit logic-level signals across an isolation barrier while blocking DC and low-frequency transients up to thousands of volts. In the modern electronics taxonomy, a digital isolator sits within the broader interface IC family (interface IC -> isolation technology -> capacitive coupling -> digital isolator), and the SI8423AD-D-IS is one of the lowest-cost, narrow-bandwidth members of the Si842x capacitive-isolation family used wherever signal integrity across an isolation barrier is required. Key features include a wide 2.7 V to 5.5 V supply range on both sides (allowing level translation between 3.3 V and 5 V domains), 35 ns maximum propagation delay (tPHL/tPLH), 1.5 ns typical pulse-width distortion, 0.5 ns channel-to-channel skew, and 2 ns propagation delay skew across parts. The device operates over -40 °C to +125 °C, supports a 5 ns minimum pulse width, and is qualified to AEC-Q100 for automotive system designs. RoHS-compliant wide-body SOIC-16 and narrow-body SOIC-8 packages are available within the family. Internally, the Si842x family uses Skyworks' proprietary CMOS-based capacitive isolation technology, where high-voltage capacitors on either side of a SiO2 dielectric barrier modulate an RF carrier to transmit data. Unlike older optocoupler designs, this architecture eliminates LED aging, current-transfer-ratio (CTR) degradation, and slow propagation delays while delivering deterministic 35 ns timing suitable for SPI, I2C, GPIO, and discrete digital control across isolation. Typical applications include isolated SPI interfaces between a microcontroller and a power-converter gate driver, isolated GPIO in industrial PLC and motor-drive systems, isolated UART links in medical and energy-metering equipment, and digital control signal isolation in battery-management and renewable-energy inverter systems. The wide-body SOIC package provides the 8 mm creepage/clearance required for reinforced insulation to IEC 60747-17 / IEC 62368-1 in 230 V mains-connected equipment. When designing with this isolator, derate the isolation voltage per application requirements (5 kVrms is the basic isolation rating; reinforced insulation uses 250 Vrms working voltage). Provide 0.1 µF + 1 µF bypass caps on both VDD pins placed within 2 mm of the IC pins, and treat the two ground domains (VDD1 GND1 and VDD2 GND2) as completely separate returns connected only at the application PCB ground-plane stitch point. This page combines manufacturer datasheet specifications, current distributor pricing, verified drop-in alternatives within the Si842x family, and practical PCB-layout design notes that go beyond what the datasheet alone provides.

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SI8600AB-B-IS

SI8600AB-B-IS - Bidirectional I2C Digital Isolator | Skyworks

The Skyworks SI8600AB-B-IS is a bidirectional I2C digital isolator with 2500 Vrms isolation, two channels, and 35 kV/µs common-mode transient immunity (CMTI), housed in an 8-pin SOIC (3.90 mm body width) package. It supports 3 V to 5.5 V supply operation on each side, up to 20 ns propagation delay, and a -40 °C to +125 °C industrial temperature range, with AEC-friendly plastic packaging. The two-wire bidirectional SDA/SCL path is built around Skyworks' proprietary RF-coupled isolation barrier, providing reinforcement insulation at galvanic separation levels associated with industrial field-bus and medical isolated-port designs. What is a digital isolator? A digital isolator is a semiconductor device that transfers logic signals across a galvanic isolation barrier using either RF coupling, magnetic coupling, or optical coupling, while blocking high-voltage transients and ground-potential differences. Digital isolators sit within the broader category of interface ICs (signal conditioning -> isolation -> serial communication) and are commonly used to bridge host controllers with sensors, transceivers, or operator-accessible ports in systems that must meet IEC 60747-17 reinforced-insulation standards. Key features include support for I2C clock-stretching and hot-swap insertion, open-drain buffering on the bidirectional pair, 2.5 V/3.3 V/5 V level translation across the barrier, and unidirectional auxiliary digital channels for side-band signals. The integrated 10-lead-equivalent isolation functionality eliminates the need for discrete photo-couplers and external pull-up coordination circuits in many designs. Internally, the Si8600 family uses an on-chip RF carrier (rather than LED/optocoupler or transformer windings) modulated by input data, recovered on the opposite side, and resynchronized to the local clock. This yields steady propagation delay across temperature and age, low power consumption versus opto-isolators, and a compact 8-SOIC footprint that does not require special creepage/clearance layout beyond standard SMT assembly. Typical applications include isolated I2C buses in industrial PLCs, isolated sensor readouts, hot-swap-capable I/O cards, USB-to-I2C bridges across a high-voltage barrier, and battery-management system (BMS) isolation between low-voltage control and high-voltage cell stacks. When designing with this part, ensure both sides have adequate pull-up resistors to their respective VDD rails (typical 1 kΩ to 10 kΩ depending on bus capacitance), and respect the 560 V peak or 2500 Vrms working voltage limits described in the manufacturer datasheet. Decouple VDD1 and VDD2 with 0.1 µF ceramic capacitors placed within 2 mm of each supply pin. This page synthesizes real-time distributor pricing, drop-in alternatives, datasheet access, and practical design notes not consolidated on the manufacturer product page alone.

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SI8600AB-B-ISR

SI8600AB-B-ISR - 2.5kV I2C Digital Isolator, 8-SOIC | Skyworks/Silicon Labs

The Silicon Labs (now Skyworks) SI8600AB-B-ISR is a bidirectional I2C digital isolator providing 2500 Vrms galvanic isolation between two bidirectional serial channels, housed in an 8-pin SOIC (0.154 inch / 3.90 mm width) package with 35 kV/µs typical common-mode transient immunity (CMTI). It is specified for 3 V to 5.5 V operation on both sides and supports bidirectional SDA and SCL isolation up to 1.7 MHz using proprietary RF-coupled isolation technology. A digital isolator is a semiconductor device that transmits data across an electrical isolation barrier using capacitive, magnetic, or RF coupling instead of optocouplers. Compared to optocouplers, RF-coupled isolators such as the SI8600 deliver faster propagation delay (typically 20 ns), dramatically lower power consumption, and stable parametric behavior over temperature and aging. Digital isolators are the modern building block of functional-isolation signal chains in industrial I2C buses, where they break ground loops while preserving bidirectional handshake semantics. Key features include two bidirectional channels with open-drain, 35 mA sink capability, hot-swap tolerant inputs that tolerate bus contention during plug-in, clock-stretching support, and Schmitt-triggered inputs with typical 20 ns propagation delay. The 8-SOIC package footprint is the industry-standard digital-isolator outline, and the device requires no external clock or configuration components. Internally the SI8600AB-B-ISR uses Silicon Labs' proprietary RF isolation technology, transmitting edge transitions across a polyimide insulation region using an on-chip RF carrier. This topology yields >25 years of insulation lifetime at rated working voltage, deterministic propagation delay, and >50 kV/µs transient immunity that exceeds optocoupler performance by an order of magnitude. Typical applications include isolated I2C bus interfaces between a microcontroller and a sensor front-end, hot-swappable I2C peripherals in telecom equipment, SMBus isolation in server backplanes, industrial I/O modules with functional isolation, and any 4-wire bidirectional I2C/SMBus link requiring reinforced safety isolation. A key design consideration is that both sides of the SI8600AB-B-ISR require their own bypass capacitor (typically 0.1 µF ceramic close to VDD pins) and pull-up resistors sized for the chosen I2C speed. The device supports standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode-plus (1 MHz) I2C; for 1.7 MHz operation consult the datasheet. This page consolidates distributor pricing, drop-in alternatives including the TI ISO1640 pin-to-pin replacement, and practical PCB and hot-swap design notes that go beyond the manufacturer datasheet narrative.

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SI8602AD-B-ISR

SI8602AD-B-ISR - 5kVrms I2C Isolator 2CH | Skyworks

The Skyworks Solutions SI8602AD-B-ISR is a 5 kVrms I2C digital isolator with two isolation channels (bidirectional SDA plus unidirectional SCL), 35 kV/us common-mode transient immunity, and 1.7 Mb/s data rate, housed in a 16-pin SOIC (0.295 inch, 7.50 mm width) package. A digital isolator is a semiconductor device that transfers digital signals across an isolation barrier while blocking high voltages and ground potential differences between two circuit domains. Within the signal-chain hierarchy, digital isolators sit alongside optocouplers as galvanic isolation elements, but unlike optocouplers they are CMOS devices built on capacitive coupling technology, delivering shorter propagation delays, lower power consumption, smaller installed size, and more stable operation over temperature and age. Key features include 5000 Vrms withstand isolation, open-drain outputs with 35 mA sink current that natively support I2C wired-AND buses, and independent bidirectional SDA and unidirectional SCL isolation channels. The 35 kV/us CMTI rating keeps the isolation barrier intact in the presence of fast-switching ground bounce, which is essential in motor-drive and power-converter environments. Supply operation spans 2.5 V to 5.5 V on both sides, allowing 3.3 V to 5 V level-independent connection. The device is based on Silicon Labs proprietary RF isolation technology, now manufactured and sold by Skyworks Solutions. The capacitor-based isolation barrier avoids the LED aging mechanisms inherent to optocouplers, so propagation delay and CMTI remain stable over lifetime. The -40C to +125C operating range and AEC-Q100 qualification support automotive-grade deployments. Typical applications include isolated I2C bus segments in automotive battery management systems, industrial PMBus power supplies, and isolation of I2C peripherals in motor drives and renewable-energy inverters. The open-drain architecture means the isolator can sit directly in an I2C bus line without direction-control logic, simplifying multi-master designs. A key design consideration is pull-up resistor sizing: because the 35 mA open-drain sink governs bus fall times, choose pull-ups that keep rise time within I2C specification at the intended bus speed and bus capacitance. This page synthesizes distributor pricing, drop-in alternatives within the Si86xx family, and practical I2C design notes not found in the manufacturer datasheet.

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SI8610BC-B-IS

SI8610BC-B-IS - 1-Channel 150Mbps Digital Isolator | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI8610BC-B-IS is a 1-channel ultra-low-power CMOS digital isolator rated at 3750 Vrms isolation, supporting data rates from DC up to 150 Mbps in an 8-pin SOIC narrow-body package. It delivers 8 ns typical propagation delay, 35 kV/us common-mode transient immunity (CMTI), and operates from a wide 2.5 V to 5.5 V supply on both sides of the isolation barrier. A digital isolator is a semiconductor device that transfers logic-level signals across a galvanically isolated barrier using high-frequency capacitive or magnetic coupling instead of an optocoupler's LED + phototransistor chain. Within the broader semiconductor taxonomy, the SI8610BC-B-IS sits under Isolators -> Digital Isolators -> Interface ICs. Compared to legacy optocouplers, capacitive CMOS isolators offer higher data rate, lower propagation delay skew, no LED aging, no CTR (current transfer ratio) drift, and an order-of-magnitude lower quiescent current, while sharing the same JEDEC SOIC footprint so existing optocoupler PCB land patterns can often be reused. Key features include no start-up initialization required, Schmitt-trigger inputs with 25 ns typical pulse-width distortion, and 60-year continuous rated-life isolation barrier per VDE 0884-10 / IEC 60747-17 testing. The -B suffix denotes an updated silicon revision that the manufacturer uses to track minor parametric improvements within the same datasheet family. The Si8610x family uses Skyworks' proprietary capacitive isolation technology with on-off-keying (OOK) modulation and an integrated differential receiver. This architecture eliminates the need for an external transformer or RF carrier, so the device behaves as a logic buffer with an isolation barrier embedded in the package - the only external BOM is a 0.1 uF VDD bypass capacitor on each side and, where required, a logic-side output pull-up resistor. Typical applications include isolated SPI / RS-232 / RS-485 links, industrial 4-20 mA loop isolation, I/O isolation on PLC and motor-drive boards, isolated gate-drive signaling, and isolated UART links between microcontrollers and high-voltage domains in solar inverters, EV chargers, and medical equipment. Designers pick this part when 3.75 kVrms isolation, 150 Mbps speed, and 8-SOIC simplicity matter more than reinforced 5 kV isolation or >25 Mbps edge placement accuracy. When designing in, observe creepage and clearance per IEC 60664-1 for the SOIC-8 footprint - reinforced insulation requires 8 mm minimum and may force a wider-body package. Decouple VDD1 and VDD2 independently with low-ESL 0.1 uF ceramics placed within 2 mm of the supply pins, and avoid routing high-dV/dt traces under the package body to preserve the 35 kV/us CMTI margin. This page synthesizes distributor pricing, drop-in Skyworks/Silicon Labs family alternatives, cross-brand pin-compatible equivalents, and practical design notes not found in a single datasheet.

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SI5345B-B-GM 350 MHz Clock Synthesizer | Skyworks Solutions

SI5345B-D-GM - 10-Output Jitter Attenuator | Skyworks

SI5351A-B-GTR - 200MHz I2C CMOS Clock Generator, 2-Output, MSOP-10 | Skyworks

SI5391A-A-GM - 12-Output Ultra-Low-Jitter Clock Generator | Skyworks

SI5391P-A-GM - Ultra-Low Jitter 12-Output Clock Generator

SI5394A-A-GM - 4-Output Jitter Attenuator, 69fs | Skyworks

SI8244BB-C-IS1 - 2-Channel Isolated Class-D Driver

SI8244BB-C-IS1R - 2-Channel Isolated Class-D Driver (Tape & Reel)

SI8244CB-D-IS1 - 2-Channel 4A Audio Driver | Skyworks

SI8244CB-D-IS1R - 2-Channel 4A Audio Driver | Skyworks (Tape & Reel)

SI8380P-IU - 8-Ch 24V Digital Isolator 2.5kV | Skyworks

SI8420AD-D-IS - 2-Ch 5kV Digital Isolator, 1Mbps | Skyworks/Silicon Labs

SI8421AD-D-IS - 5kV 2-Channel Digital Isolator 1Mbps | Silicon Labs

SI8422AD-D-IS - 5kV 2-Ch Digital Isolator, 1Mbps | Skyworks

SI8422BB-D-IS - 2.5 kV 2-Channel Digital Isolator | Skyworks

SI8423AD-D-IS - 2-Channel Digital Isolator, 5kV, 1Mbps | Skyworks

SI8600AB-B-IS - Bidirectional I2C Digital Isolator | Skyworks

SI8600AB-B-ISR - 2.5kV I2C Digital Isolator, 8-SOIC | Skyworks/Silicon Labs

SI8602AD-B-ISR - 5kVrms I2C Isolator 2CH | Skyworks

SI8610BC-B-IS - 1-Channel 150Mbps Digital Isolator | Skyworks