Integrated Circuits

Subcategories

📁 ADC/DAC 3,100+ products 📁 Amplifier ICs 1,700+ products 📁 Audio Codecs 18 products 📁 Audio ICs 2 products 📁 Clock & Timing 640+ products 📁 Comparator ICs 1 products 📁 DSP 1,100+ products 📁 Data Acquisition ICs 2 products 📁 Digital Potentiometers 4 products 📁 Display Drivers & Controllers 1 products 📁 FPGA & CPLD 7,100+ products 📁 Interface ICs 3,100+ products 📁 LED Drivers 1 products 📁 Logic ICs 450+ products 📁 Memory ICs 870+ products 📁 Microcontrollers 20,000+ products 📁 Microprocessors 4 products 📁 Motor Drivers 1 products 📁 Other 1 products 📁 Sensor and Detector Interfaces 1 products 📁 Specialized ICs 15 products 📁 Video ICs 13 products

Products (38,000+)

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

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

RFQ Contact
SI8244BB-C-IS1 - 2-Channel Isolated Class-D Driver
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.

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

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

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

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

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

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

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

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

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

RFQ Contact
SI8600AB-B-IS - Bidirectional I2C Digital Isolator | Skyworks
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.

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

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

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

RFQ Contact
SI8621EC-B-ISR - 2-Channel Digital Isolator, 3.75 kV, 150 Mbps | Skyworks
SI8621EC-B-ISR

SI8621EC-B-ISR - 2-Channel Digital Isolator, 3.75 kV, 150 Mbps | Skyworks

The Skyworks (formerly Silicon Labs) SI8621EC-B-ISR is a dual-channel CMOS digital isolator rated for 3750 Vrms isolation with a 150 Mbps data rate and a 35 kV/µs common-mode transient immunity (CMTI), housed in an 8-pin SOIC (3.90 mm width) wide-body package. The EC product family variant offers an industry-standard pinout with two unidirectional channels that can be configured as one forward and one reverse direction. A digital isolator is a semiconductor device that transfers logic signals across an isolation barrier using high-voltage capacitive or magnetic coupling instead of optical coupling. The Si86xx family belongs to the power management and signal-isolation hierarchy: digital isolator -> galvanic isolator -> signal conditioning IC -> interface IC. Replacing legacy opto-couplers, CMOS digital isolators deliver higher speed, tighter propagation-delay matching, lower power consumption, better CMTI, and longer service life — all critical in industrial and automotive systems. Key features include 150 Mbps NRZ signaling with < 10 ns typical propagation delay, ±100 kV/µs transient immunity, 60-year minimum isolation barrier life at rated working voltage, 1.5 mA per-channel quiescent current at 1 Mbps, and wide -40 °C to +125 °C operating temperature. The wide-body SOIC-8 (3.9 mm creepage) provides the 3750 Vrms reinforced isolation needed for reinforced IEC 60747-17 / UL 1577 compliant designs. The Si8621EC uses Skyworks' proprietary RF-coupled CMOS isolation architecture: an on-chip encoder converts the DC input into a short RF carrier, the RF carrier is coupled across a high-voltage capacitive barrier, and an integrated PLL/buffer reconstructs the DC output. Unlike optocouplers, this approach has no LED degradation, no current-transfer-ratio (CTR) aging, and stable timing across temperature. Typical applications include isolated SPI / I²C / RS-485 / RS-232 interfaces in industrial PLCs, motor-drive gate-driver signal isolation in 3-phase inverters, isolated UART channels between MCU and ground domains, battery-management system (BMS) communication isolation in EV traction packs, and digital-isolation barriers in solar inverters and telecom DC-DC modules. When designing with this device, place 0.1 µF decoupling capacitors on both VDD1 and VDD2 as close to the IC pins as possible and ensure the SOIC-8 wide-body footprint maintains ≥ 3.9 mm of package-side creepage. The default channel direction (one forward, one reverse) eliminates external glue logic for full-duplex protocols. This page synthesizes Skyworks (Silicon Labs) datasheet specifications, real-time distributor pricing across DigiKey/Mouser/LCSC, drop-in same-package alternatives from the Si86xx family, and practical PCB design notes that go beyond the manufacturer datasheet.

RFQ Contact
SI8630AB-B-IS - 3-Ch 2.5kV Digital Isolator 1Mbps SOIC-16
SI8630AB-B-IS

SI8630AB-B-IS - 3-Ch 2.5kV Digital Isolator 1Mbps SOIC-16

The Skyworks Solutions (formerly Silicon Labs) SI8630AB-B-IS is a 3-channel, 2.5 kVrms general-purpose CMOS digital isolator in a 16-pin wide-body SOIC package, supporting data transmission up to 1 Mbps with 35 kV/us minimum common-mode transient immunity (CMTI). It operates from 2.70 V to 5.5 V on both sides of the isolation barrier and consumes less than 1.6 mA per channel at 1 Mbps with a 5 V supply. What is a digital isolator? A digital isolator is a semiconductor device that transfers logic signals across a galvanically isolated barrier, replacing optocouplers in most modern designs. The Si86xx family uses Skyworks' proprietary RF-coupled isolation technology (capacitive or transformer-based) to break ground loops, reject common-mode transients, and protect low-voltage circuitry from high-voltage domains. Within the signal-chain taxonomy, a digital isolator belongs to interface ICs and typically sits between a controller and a power stage, sensor front end, or communication transceiver. Key features of the SI8630AB-B-IS include 2500 Vrms isolation rating per UL 1577, 3 forward and 0 reverse channels (channel count: 3/0), wide 2.70-5.5 V supply on both sides, propagation delay around 35 ns typical, and -40 C to +125 C operating temperature range. The wide-body SOIC-16 (7.50 mm) package provides the reinforced creepage and clearance required for 2.5 kV safety isolation while staying drop-in compatible with other Si86xx 16-pin SOIC members. Architecturally, the device uses an RF carrier modulation scheme across an internal isolation barrier combined with differential receivers on each side; no start-up initialization is required and the parameters remain stable across temperature and device lifetime. Compared to optocouplers, the Si86xx family eliminates the LED aging problem, removes the need for refresh pulses, and provides tighter channel-to-channel matching. Compared to gate-driver isolators in the same family, the SI8630 is a general-purpose logic isolator with no integrated driver outputs. Typical applications include isolated SPI/UART interfaces between a low-voltage MCU and a 24 V industrial PLC backplane, isolated gate-drive logic signals for solar inverters, isolated analog-front-end IO between motor controllers and microcontroller, isolated I2C or RS-485 bus segments, medical equipment signal isolation, and industrial field-bus isolation in 4-20 mA loops. When designing with the SI8630AB-B-IS, place 0.1 uF bypass capacitors close to each VDD pin on both sides of the barrier and add bulk capacitance if the upstream supply is shared with switching nodes. For 2.5 kVrms reinforced isolation, follow the wide-body SOIC PCB creepage and clearance guidelines (typically 8 mm minimum). The device has no enable pin - all channels are active whenever bias is present. This page synthesizes distributor pricing, drop-in alternatives, and practical PCB design notes drawn from the Skyworks Si86xx 1 Mbps datasheet family that are not consolidated in any single manufacturer document.

RFQ Contact
SI8630AB-B-IS1 - 3-Channel 2.5kV Digital Isolator, 1Mbps | Skyworks
SI8630AB-B-IS1

SI8630AB-B-IS1 - 3-Channel 2.5kV Digital Isolator, 1Mbps | Skyworks

The Skyworks SI8630AB-B-IS1 is a low-power, triple-channel CMOS digital isolator rated at 2500 Vrms isolation voltage and supporting 1 Mbps data rate across three unidirectional channels, housed in a 16-pin wide-body SOIC (SOIC-W) package. A digital isolator is an integrated circuit that transfers data across an isolation barrier using capacitive or inductive coupling rather than optical or transformer-based methods, enabling signal-level translation between two galvanically isolated grounds while protecting low-voltage logic from high-voltage transients. The SI8630AB-B-IS1 sits within the broader category of digital isolators (isolation ICs > interface ICs > power management and signaling), providing reinforced insulation for industrial, medical, and renewable-energy systems. Key specifications include 2500 Vrms isolation (UL1577-rated), 35 kV/µs common-mode transient immunity (CMTI), 35 ns typical propagation delay, and 2.5 V to 5.5 V supply on both sides. The device supports bidirectional operation only via external DC-blocking components and operates from a 2.5 V to 5.5 V supply. It provides three forward channels (3/0 direction), making it well suited for unidirectional digital signaling such as gate-drive interfaces, SPI isolation, or RS-485 transceiver-to-MCU links. The wide-body SOIC package provides 8 mm creepage and clearance, which is essential for end-system certifications. Architecturally, the SI8630AB-B-IS1 uses Skyworks' proprietary CMOS-based isolation technology with on-chip RF carrier modulation across a 1.6 µm polyimide dielectric. This achieves higher CMTI (35 kV/µs) and lower power consumption than legacy optocouplers. The internal oscillator-driven architecture requires no external clock, simplifying design-in. Typical applications include isolated SPI interfaces, industrial fieldbus (RS-485, CAN) isolation, gate driver signal isolation for motor drives and solar inverters, isolated ADC/DAC front ends, and medical-device patient-isolation barriers. The wide 2.5 V to 5.5 V supply range also permits direct connection to 3.3 V and 5 V MCUs without level shifters. When designing with the SI8630AB-B-IS1, pay attention to bypass capacitor placement - 0.1 µF X7R ceramics on each VDD pin placed within 2 mm of the leads are required for the rated CMTI performance. The wide-body SOIC package provides the required 8 mm creepage for reinforced insulation per IEC 60747-17; board layout should not route any copper underneath the package body to preserve this clearance. This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in alternatives in the same 16-SOIC footprint, and practical design notes covering CMTI, creepage, and bypass placement not duplicated from the Skyworks datasheet.

RFQ Contact
SI8640BA-B-IU - 4-Ch 2.5kV Digital Isolator, 150Mbps | SSOP-16
SI8640BA-B-IU

SI8640BA-B-IU - 4-Ch 2.5kV Digital Isolator, 150Mbps | SSOP-16

The Skyworks (formerly Silicon Labs) SI8640BA-B-IU is a low-power, quad-channel CMOS digital isolator rated at 2500 Vrms with four unidirectional channels, 150 Mbps data rate, 8 ns propagation delay, and 35 kV/µs common-mode transient immunity (CMTI) in a 16-pin SSOP (3.90 mm body width) package. It is qualified for an industrial operating temperature range of -40 °C to +125 °C and operates from a 2.375 V to 5.5 V supply on each side of the isolation barrier. A digital isolator is a semiconductor device that transfers logic signals across an galvanically isolated barrier using an internal RF carrier, capacitive coupling, or giant-magnetoresistance (GMR) link rather than optocoupler-style optical coupling. Digital isolators sit in the signal-isolation hierarchy between optocouplers and transformer-based isolated data interfaces, offering higher speed, lower power, better CMTI performance, and longer service-life reliability. They are widely adopted to satisfy IEC 60747-5/VDE 0884-style reinforced isolation in industrial, automotive, and renewable-energy systems. Key features include four unidirectional channels (3 forward / 1 reverse on the 'BA' channel-direction suffix), 60-year minimum isolation barrier life, ±200 kV/µs surge withstand capability, Schmitt-trigger inputs with 1.5 ns typical jitter, low EMI, and default low output states. The wide 2.375 V to 5.5 V supply range allows direct level shifting between 3.3 V and 5 V domains across the isolation barrier without additional components. The SI8640BA-B-IU employs Skyworks' proprietary RF-coupled CMOS isolation architecture, in which an on-chip RF carrier is modulated by the input data, coupled across an internal SiO2 dielectric barrier, and demodulated on the far side. This architecture delivers stable operating parameters over temperature and device lifetime, eliminating the CTR-degradation issues that plague optocouplers in long-life industrial applications. Typical applications include isolated SPI / UART / GPIO interfaces in industrial PLCs, isolated gate-driver signal paths for solar inverters and motor drives, isolated ADC/DAC digital interfaces in medical instrumentation, and battery-management isolation in 400 V / 800 V electric-vehicle traction systems. When designing with this device, place 0.1 µF bypass capacitors close to each VDD pin and verify that the VDE 0884-11 / IEC 60747-17 reinforced-insulation creepage and clearance on the PCB meet the 2.5 kVrms working-voltage requirement for the target end system. This page synthesizes distributor pricing, drop-in alternatives sourced from authorized cross-reference data, and practical design notes not found in the Skyworks / Silicon Labs datasheet alone.

RFQ Contact
SI8640BD-B-IS - 4-Ch 5kV Digital Isolator, 150Mbps | Skyworks
SI8640BD-B-IS

SI8640BD-B-IS - 4-Ch 5kV Digital Isolator, 150Mbps | Skyworks

The Skyworks (formerly Silicon Labs) SI8640BD-B-IS is a low-power, quad-channel CMOS digital isolator rated at 5000 Vrms with up to 150 Mbps data rate, housed in a 16-pin wide-body SOIC (WSOIC-16, 0.295" / 7.50 mm) package. It uses Skyworks' proprietary RF-coupled isolation technology to deliver four unidirectional channels with a propagation delay of 8 ns typical and 35 kV/us minimum common-mode transient immunity (CMTI). A digital isolator is an interface IC that transfers logic signals between two domains at very different voltage potentials while blocking DC and low-frequency currents. By replacing optocouplers, digital isolators eliminate the slow LED degradation, current-consumption penalties, and bulky footprints that limit legacy optocoupler designs. Digital isolators sit within the broader hierarchy of galvanic isolation components - between basic optocouplers and fully integrated isolated gate drivers / isolated ADC front-ends - and they are a foundational building block inside industrial PLCs, motor drives, solar inverters, and medical equipment. Key specifications include 2.5 V to 5.5 V supply range on each side, 1.8 V logic compatibility with proper level shifting, 35 kV/us minimum CMTI, 60-year minimum insulation barrier life, and 8 ns typical propagation delay. The wide-body SOIC package provides the 8 mm creepage required for reinforced insulation at 5000 Vrms working voltage, and supports PCB layouts that survive 8 kV surge and 1.2 kV ring-wave tests per IEC 60700-equivalent methods. The Si864x architecture pairs an RF carrier on the input side with a differential coil structure etched inside the package, with a second demodulator on the output side. The four channels share a single isolation barrier which trims die cost versus per-channel optocouplers. All four channels are unidirectional in the same direction (4/0 forward configuration), making this part the natural choice when four logic signals all need to cross from one side to the other. Typical applications include industrial fieldbus isolation (RS-485, CAN, SPI), motor control gate-drive signal isolation, solar inverter power-conversion feedback, medical equipment patient-isolation barriers, and PLC analog/digital I/O modules. It is also a strong fit for any system requiring reinforced 5 kV isolation per IEC 60747-17 (V) or equivalent standards. When designing with this part, place 0.1 uF decoupling capacitors on both VDD1 and VDD2 within 2 mm of the supply pins and avoid routing signal traces or copper pours directly under the body of the WSOIC package - any stray capacitance under the coil structure will degrade CMTI performance. Confirm that downstream production code lines will accept the propagation delay above 0.5 ns. This page synthesizes distributor pricing, drop-in alternatives from Skyworks and competitor families, and practical design notes not consolidated in the manufacturer datasheet, helping engineers select and qualify the SI8640BD-B-IS with confidence.

RFQ Contact
SI8641AB-B-IS1 - 4-Ch 1Mbps 2.5kV Digital Isolator | Skyworks
SI8641AB-B-IS1

SI8641AB-B-IS1 - 4-Ch 1Mbps 2.5kV Digital Isolator | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI8641AB-B-IS1 is a low-power quad-channel CMOS digital isolator rated at 2500 Vrms isolation, supporting 1 Mbps data rate across four unidirectional channels with 35 kV/µs common-mode transient immunity (CMTI), housed in a 16-pin SOIC (3.90 mm body width) package. It targets general-purpose galvanic isolation between circuit domains where signal integrity, low propagation delay, and robust transient immunity are required. A digital isolator is a semiconductor device that transfers logic signals across a galvanic isolation barrier using high-voltage capacitors, RF coupling, or GMR/micro-transformers instead of optocouplers' LED/photodiode pairs. Compared with traditional optocouplers, CMOS digital isolators deliver higher speed, tighter channel-to-channel skew, lower power consumption, and better DC accuracy. Within the broader signal-chain hierarchy, the SI8641AB-B-IS1 belongs to the digital isolator family, which itself is a sub-category of interface ICs, which in turn are part of the broader integrated circuits category used for inter-domain communication in mixed-voltage systems. Key features include four unidirectional channels configured as 3 forward / 1 reverse (per the 'B' channel-direction suffix), 35 ns typical propagation delay, 1 Mbps guaranteed data rate, 2.5 V to 5.5 V wide VDD supply range, and 35 kV/µs minimum CMTI. The CMOS architecture eliminates the high-current LED drive required by optocouplers, reducing quiescent current per channel and improving long-term reliability by removing ageing-sensitive emitters. The 2500 Vrms isolation rating satisfies reinforced-insulation requirements for many industrial control, factory automation, and renewable-energy applications. The device uses Skyworks' standard Si86xx capacitive-isolation core, which transmits data across the high-voltage domain by encoding edge transitions as RF carrier bursts. This approach yields channel-to-channel skew below 5 ns, deterministic propagation delay, and transient immunity that exceeds typical optocoupler performance by an order of magnitude. An internal refresh pulse keeps the output state valid during long DC idle intervals, supporting protocols with arbitrary duty cycles. Typical applications include isolated SPI/UART interfaces between microcontrollers and high-side gate drivers, isolated gate-drive signal paths for industrial motor drives and solar inverters, isolated data acquisition front-ends, isolated RS-485/RS-232 transceivers, and isolated power-supply feedback paths. The 1 Mbps speed rating suits low- and medium-speed control loops rather than high-speed LVDS or video links. When designing with this part, observe the PCB layout rules in the datasheet: maintain at least 4 mm creepage on the high-voltage side, place 0.1 µF VDD bypass capacitors within 2 mm of each supply pin, and avoid routing traces or copper pours directly beneath the isolation barrier. The 'B' channel configuration (3F/1R) must be matched to your MCU's transmit/receive pin assignment; if you need a different direction split, the SI8640/SI8642/SI8645 family members offer alternative routings in the same SOIC-16 footprint. This page synthesizes current distributor pricing, verified Skyworks-family drop-in alternatives, and practical PCB/EMI design notes that are not bundled together on the manufacturer product page or the distributor catalog listings.

RFQ Contact
SI8641AB-B-ISR - 2.5kV 4-Ch Digital Isolator, 1Mbps | Skyworks
SI8641AB-B-ISR

SI8641AB-B-ISR - 2.5kV 4-Ch Digital Isolator, 1Mbps | Skyworks

The Skyworks Solutions SI8641AB-B-ISR is a 4-channel CMOS digital isolator providing 2500 Vrms galvanic isolation with a 1 Mbps data rate and 35 kV/µs common-mode transient immunity (CMTI), housed in a 16-pin wide-body SOIC (0.295", 7.50 mm) package. Per the manufacturer datasheet, this part supports 2.5 V to 5.5 V supply on each side and uses Skyworks' proprietary RF carrier-based isolation architecture to deliver robust signal integrity across the isolation barrier. A digital isolator is a semiconductor device that transmits logic signals across an isolation barrier while blocking high-voltage transients, ground loops, and common-mode noise. Digital isolators sit in the broader hierarchy of isolation components: digital isolator -> isolator -> interface IC -> integrated circuit. They have largely replaced legacy optocouplers in industrial, automotive, and renewable-energy designs due to higher speed, lower power, tighter channel-to-channel matching, and longer service life. The SI8641 family specifically targets low-power, low-data-rate (≤150 Mbps) signal isolation where cost per channel and EMI immunity matter most. Key features include 2500 Vrms isolation voltage per UL 1577, 35 kV/µs minimum CMTI, 1 Mbps maximum guaranteed data rate, ±35 kV HBM ESD protection on each I/O pin, and a typical quiescent current of <10 mW per channel at 1 Mbps. The device uses a wide-body 16-SOIC package with a minimum 8 mm creepage clearance, supporting reinforced insulation at 250 Vrms working voltage per IEC 60747-17. Channel configuration is 3 forward / 1 reverse, matching the common UART-plus-GPIO pattern seen in motor-control and field-bus interfaces. Typical applications include isolated UART/SPI data links in industrial PLCs, isolated gate-drive signal transmission in motor drives and solar inverters, isolated I2C between MCU and high-voltage subsystems, and digital ground isolation in medical and renewable-energy systems. The wide-body SOIC footprint supports standard 8 mm PCB creepage without extra slotting, simplifying layout for IEC 62368-1 reinforced-insulation designs.

RFQ Contact
SI8641BD-B-ISR - 5kVrms 4-Ch 150Mbps Digital Isolator | Skyworks
SI8641BD-B-ISR

SI8641BD-B-ISR - 5kVrms 4-Ch 150Mbps Digital Isolator | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI8641BD-B-ISR is a quad-channel digital isolator rated at 5000 Vrms isolation with a 150 Mbps data rate, housed in a 16-pin wide-body SOIC (0.295 inch, 7.5 mm width) package. It delivers 35 kV/µs common-mode transient immunity (CMTI) and 8 ns typical propagation delay, making it suitable for high-speed industrial, automotive, and renewable-energy interfaces where galvanic isolation between ground domains is mandatory for safety and noise rejection. What is a digital isolator? A digital isolator is a semiconductor device that transfers logic-level signals across an isolation barrier (typically a high-voltage dielectric or RF-coupled transformer inside the chip) while blocking DC and low-frequency transients between the input and output domains. Digital isolators have largely replaced optocouplers because they offer higher data rates, tighter propagation delay, lower power consumption, better CMTI, and longer operational life. Within the broader power management and interface hierarchy, digital isolators sit beside gate drivers, isolated ADCs, and isolated transceivers as the core isolation primitives used in motor control, solar inverters, EV charging, factory automation, and medical equipment. Key features of the SI8641BD-B-ISR include CMOS-based isolation technology, 2.375 V to 5.5 V supply range on both sides for flexible level translation, default-high or default-low fail-safe output options, and an enable pin for grouped output control. The wide-body SOIC-16 package provides a clearance and creepage distance compliant with reinforced insulation at 5 kVrms per UL 1577 and IEC 60747-17 (VDE 0884-17) requirements. Typical applications include industrial Fieldbus isolation (RS-485, RS-232, CAN, SPI, I2C), solar inverter gate-driver signal isolation, motor-drive control signal interfaces, EV charging-station communication, and PLC I/O isolation. The high CMTI of 35 kV/µs ensures reliable data transmission in noisy switching environments such as SiC and IGBT power stages. When designing with the SI8641BD-B-ISR, place decoupling capacitors (typically 0.1 µF ceramic) as close as possible to each VDD pin, observe PCB layout creepage rules for the 5 kV rating, and confirm that the upstream and downstream supplies can be independently enabled or disabled without violating the device's power-up/power-down sequencing requirements. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet, giving procurement teams and design engineers a single decision-ready reference.

RFQ Contact