מעגלים משולבים

SI8660BB-B-IS1R

SI8660BB-B-IS1R - 6-Ch 150Mbps 2.5kV Digital Isolator | Skyworks

The Skyworks (formerly Silicon Labs) SI8660BB-B-IS1R is a low-power six-channel CMOS digital isolator rated for 2.5 kVrms isolation and 150 Mbps data rate, packaged in a 16-pin narrow-body SOIC (0.154" / 3.90 mm width). It uses Skyworks' proprietary RF carrier-based isolation technology to deliver six independent unidirectional isolation channels in a single IC, replacing legacy optocouplers with a fraction of the power consumption and a 35 kV/µs common-mode transient immunity (CMTI). A digital isolator is a semiconductor device that transfers logic signals across an electrical isolation barrier using capacitive, magnetic, or RF coupling, while blocking high voltages, ground loops, and noise transients between two circuit domains. Digital isolators sit hierarchically between optocouplers (older LED-based technology) and integrated isolated gate drivers / isolated data converters (functional blocks with built-in isolation). Within a system, they enable safe communication between a low-voltage controller side (e.g., 3.3 V MCU) and a high-voltage power or field side (e.g., 24 V industrial bus, 400 V traction inverter), forming the safety-critical interface mandated by IEC 60747-17 and UL 1577. Key features of the SI8660BB-B-IS1R include a 2.5 kVrms withstand voltage per UL 1577, a 150 Mbps maximum data rate with low propagation delay, an operating supply range of 2.5 V to 5.5 V on both sides, fail-safe default outputs, and -40 °C to +125 °C industrial temperature support. The device requires no external drivers or clock sources and uses standard CMOS I/O levels, simplifying interface with 3.3 V and 5 V MCUs. Internally the part uses an RF carrier modulated by the input data, coupled across a high-voltage SiO2 isolation barrier through on-chip transformers, then demodulated back to a CMOS output. This architecture avoids the LED aging and current-transfer-ratio degradation inherent to optocouplers, while delivering >25 years of service life and stable parameters over temperature. The narrow-body SOIC-16 footprint matches the popular package outline and pinout shared with the broader Si866x family. Typical applications include industrial fieldbus isolation (RS-485, CAN, SPI between isolated ground domains), solar inverter gate-driver signaling, motor-control feedback isolation, PLC digital-input modules, and isolated SPI/UART links between a host MCU and a high-voltage sensor or power stage. The 150 Mbps capability also suits high-speed signalling such as isolated USB or LVDS bridging. When designing with this device, place 0.1 µF bypass capacitors directly on each VDD pin and keep the trace loop between the two VDD domains short. Note that the narrow-body 16-SOIC offers 2.5 kVrms; for higher isolation grades (5 kVrms), choose the wide-body SOIC variants in the same Si866x family. This page synthesizes Skyworks datasheet specifications, distributor live pricing, same-family Si866x cross references, and practical layout notes not found in the manufacturer datasheet.

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SI8661BC-B-IS1R

SI8661BC-B-IS1R - 6-Ch 3.75 kV 150 Mbps Digital Isolator | Skyworks

The Skyworks (formerly Silicon Labs) SI8661BC-B-IS1R is a low-power six-channel CMOS digital isolator rated at 3750 Vrms isolation with 150 Mbps data rate and 35 kV/us common-mode transient immunity, housed in a 16-pin wide-body SOIC package (0.154 inch / 3.90 mm width). The BC grade offers six forward channels in the same direction, providing galvanic isolation between two voltage domains while supporting high-speed unidirectional signaling such as SPI, GPIO, and parallel data buses. A digital isolator is a semiconductor device that transmits data or clock signals across an isolation barrier using capacitive or inductive coupling instead of optical or electromechanical means. Digital isolators sit in the broader hierarchy of signal isolation components: digital isolator -> isolator -> interface IC -> semiconductor. They replace legacy optocouplers in most modern designs because they offer higher speed, lower power, tighter channel-to-channel matching, and CMOS-compatible inputs/outputs without the aging and CTR degradation inherent to LEDs. Key features of the SI8661BC-B-IS1R include sub-nanosecond channel-to-channel skew, 60 ns typical propagation delay, 50 kV/us minimum CMTI, and 1.5 mA per channel quiescent current at 100 kHz. The device operates from 2.5 V to 5.5 V supplies on both sides of the barrier and supports DC-to-150 Mbps NRZ data. It is AEC-Q100 qualified for automotive applications and carries UL/VDE/CSA safety certifications per IEC 60747-17 / IEC 60747-5-5 for reinforced insulation. The architecture uses Skyworks' proprietary CMOS capacitive coupling with on-chip refresh, eliminating the need for external transformers or LEDs. The wide-body SOIC package provides 8 mm creepage and clearance, supporting reinforced insulation up to 3750 Vrms / 5 kVpeak surge. Internal pull-up resistors simplify external circuitry and reduce BOM count. Typical applications include industrial fieldbus isolation (RS-485, CAN, Profibus), motor drive gate-driver signal isolation, isolated SPI interfaces for ADC/DAC subsystems, solar inverter control loops, and EV battery management isolation. The 150 Mbps rating also supports low-latency digital audio and video interfaces. Design with the SI8661BC-B-IS1R by placing 0.1 uF decoupling capacitors on both VDD pins and routing the high-speed traces as 50 ohm microstrip if edge rates exceed 30 Mbps. The enable pin (pin 16) should be tied high for normal operation; floating it disables all outputs and pulls them to default low. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical layout notes drawn from the Skyworks Si866x datasheet family - context that the datasheet alone does not provide for sourcing and second-source decisions.

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SI8662BB-B-IS1

SI8662BB-B-IS1 - 6-Ch 2.5kVrms Digital Isolator | Skyworks

The Skyworks (formerly Silicon Labs) SI8662BB-B-IS1 is a 6-channel CMOS digital isolator rated at 2500Vrms with up to 150 Mbps data rate and 35 kV/us common-mode transient immunity (CMTI), housed in a 16-pin narrow-body SOIC (NB SOIC-16, 0.154 inch / 3.90 mm width). It uses Skyworks' proprietary RF-coupled isolation technology instead of optocouplers or transformers, eliminating LED aging and bulky magnetics while supporting 2.5V to 5.5V I/O levels on both sides. A digital isolator is a semiconductor device that transfers logic signals between two galvanically isolated voltage domains while maintaining a high withstand-voltage isolation barrier (typically 2.5 kVrms to 5 kVrms). Digital isolators belong to the interface IC family within the broader category of isolation components, alongside optocouplers, isolated gate drivers, and isolated ADCs. They are widely used to break ground loops, protect low-voltage logic from high-voltage spikes, and meet safety standards such as IEC 60747-17 and UL 1577 in industrial, automotive, and renewable-energy systems. Key features include a 150 Mbps maximum signaling rate, 8 ns typical propagation delay, 35 kV/us minimum CMTI, 2.5V to 5.5V wide-side supply range, and a default low or default high output option (the 'B' suffix in this SKU indicates a specific channel-direction configuration). The device operates from -40C to +125C, supports up to 2500Vrms continuous isolation, and integrates refresh, watchdog, and under-voltage lockout functions on each side. The NB SOIC-16 package is a creepage-optimized 300 mil body that satisfies 8 mm reinforced isolation when properly board-mounted. The Si8662 family uses a differential RF carrier that crosses the GBD-coupled isolation barrier and is recovered on the opposite side by a low-power receiver. This architecture delivers >10x lower dynamic current than legacy optocouplers and supports DC-correct data with deterministic propagation delay across temperature, simplifying timing analysis in SPI, I2C, RS-485, and CAN isolation. Typical applications include industrial PLC digital I/O isolation, isolated SPI/UART bridges, solar inverter gate-drive signal isolation, motor control feedback isolation, isolated RS-485/CAN transceivers, and medical equipment patient-isolated interfaces. The wide 2.5V-5.5V supply range makes it compatible with 3.3V MCUs, 5V logic, and 1.8V SoCs without level shifters. When designing with the SI8662BB-B-IS1, place 0.1 uF bypass capacitors as close as possible to both VDD pins (VDD1 and VDD2) and maintain a minimum 4 mm clearance under the device to preserve the 2500Vrms isolation rating. Decouple each supply independently; do not share ground returns across the isolation barrier. This page synthesizes distributor pricing, drop-in alternative cross-reference data from Skyworks' Si86xx family, and practical PCB-layout design notes for the 16-pin narrow-body SOIC footprint that are not available in the standalone manufacturer datasheet.

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SI8662BB-B-IU

SI8662BB-B-IU - 6-Channel 2.5kV Digital Isolator, 150Mbps | Skyworks

The Skyworks Solutions SI8662BB-B-IU is a low-power six-channel digital isolator based on proprietary CMOS isolation technology, providing 2.5 kVrms galvanic isolation across 4 forward and 2 reverse unidirectional channels in a 16-pin QSOP package. Key electrical parameters include a maximum data rate of 150 Mbps, propagation delay below 13 ns, and 50 kV/µs common-mode transient immunity (CMTI), making the part well-suited for high-speed digital signaling in harsh industrial environments. A digital isolator is a semiconductor device that transfers logic signals between two galvanically-isolated voltage domains using an internal high-voltage isolation barrier. Within the broader product hierarchy, the SI8662BB-B-IU is a general-purpose multi-channel isolator in the category of digital isolators -> isolators -> interface ICs -> integrated circuits. Digital isolators replace legacy optocouplers in modern designs because they offer higher speed, lower power consumption, tighter channel-to-channel matching, and significantly better CMTI performance, all critical for SPI, RS-485, GPIO, and digital control interfaces crossing an isolation barrier. Key features of the SI8662BB-B-IU include Schmitt-trigger inputs for high-noise-immunity logic sensing, a fail-safe default-high output mode when input power is lost, integrated dc-dc switch-driving circuitry on dedicated channels, and stable operating parameters across the -40C to +125C industrial temperature range. The device operates from 2.5 V to 5.5 V on both sides of the barrier, allowing direct interfacing with 3.3 V and 5 V logic without level shifters. Architecturally, the SI8662BB-B-IU uses Skyworks' proprietary CMOS isolation barrier with on-off keying (OOK) modulation and differential signal transmission across the capacitive isolation barrier. This architecture achieves the 50 kV/µs CMTI rating necessary to survive fast switching transients in motor-drive and power-conversion systems, while keeping per-channel quiescent current in the low milliamp range. Typical applications for the SI8662BB-B-IU include isolated SPI interfaces between microcontrollers and gate drivers in motor drives, isolated RS-485 / CAN transceivers in industrial fieldbus nodes, isolated GPIO and digital feedback channels in solar inverters, isolated control interfaces for AC-DC and DC-DC power supplies, and isolated data acquisition front-ends in measurement equipment. The wide temperature range and high CMTI also make the part appropriate for automotive and traction applications requiring reinforced isolation. When designing with the SI8662BB-B-IU, place decoupling capacitors (typically 0.1 µF) close to each VDD pin on both sides of the isolation barrier and keep the QSOP package away from high-dV/dt traces to avoid disturbing the capacitive coupling path. Note that the -I suffix indicates the QSOP-16 wide-body package, which is not drop-in compatible with the -IS1 (SOIC-16 wide-body) variant - confirm the PCB footprint matches the package code before substitution. This page synthesizes distributor pricing, drop-in cross-brand alternatives, and practical design notes that engineers can use to evaluate the SI8662BB-B-IU against its closest pin-compatible competitors.

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SI8662BC-B-IS1R

SI8662BC-B-IS1R - 6-Ch 150Mbps Digital Isolator | Skyworks

The Skyworks Solutions SI8662BC-B-IS1R is a 6-channel CMOS digital isolator rated at 3750 Vrms withstanding voltage, 150 Mbps maximum data rate, and 35 kV/us CMTI, housed in a 16-pin narrow-body SOIC (3.90 mm width) package. It uses Silicon Labs' proprietary RF-coupled isolation technology, integrating an onboard DC-DC converter on the chip so each side can be powered from a single 3.0 V to 5.5 V supply without external bypass or isolation transformers. The 'BC' channel configuration provides 6 forward channels (six in the same direction), making it suitable for unidirectional high-speed signal transfer across an isolation barrier. What is a digital isolator? A digital isolator is a semiconductor device that transfers digital signals across an isolation barrier using high-voltage capacitors, micro-transformers, or optocouplers. They replace legacy optocouplers in industrial, automotive, and medical systems where galvanic isolation is required for safety, ground-loop elimination, or noise immunity. Within the broader taxonomy, digital isolators are interface ICs (interface > isolation > galvanic isolator) and compete directly with traditional optocouplers while offering higher speed, longer lifetime, and tighter channel-to-channel matching. Key features of the SI8662BC-B-IS1R include an operating temperature range of -40C to +125C, propagation delay of approximately 18 ns typical, and an integrated shutdown mode that drops current consumption to near-zero during idle states. The device meets UL 1577, CSA, and VDE safety certification targets for reinforced insulation at 3750 Vrms. Channel-to-channel timing skew is tightly controlled, making it ideal for parallel data buses and synchronous SPI or GPIO expansion across isolation. Technically, the SI8662BC-B-IS1R uses Skyworks' CMOS-based isolation architecture with on-chip RF couplers, eliminating the need for LED-based emitters used in optocouplers. This yields a 50+ year operating life, much better than optocouplers whose LEDs degrade over time. Six independent channels share the same silicon die but are individually isolated, so a fault on one channel does not propagate to others, enhancing system-level reliability in industrial PLCs and motor drives. Typical applications include SPI/peripheral isolation in industrial PLCs, isolated GPIO interfaces in motor drives, isolated data acquisition front ends, USB isolation, isolated RS-485/RS-232 transceiver interfaces, and isolated sensor signal chains in medical and renewable-energy inverters. The SI8662BC-B-IS1R's 35 kV/us CMTI ensures robust operation in noisy environments such as IGBT motor drive switching nodes. When designing with this part, place 0.1 uF bypass capacitors as close as possible to each VDD pin (one per side) and avoid routing high-speed digital traces directly under the isolation barrier to maintain creepage and clearance requirements. Designers should also reserve at least 4 mm of external PCB creepage if the application targets reinforced insulation (VDE 0884). This page consolidates verified distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet, giving engineers a faster path to an isolation BOM decision.

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SI8662BD-B-IS

SI8662BD-B-IS - 6-Ch 5kVrms 150Mbps Digital Isolator | Skyworks

The Skyworks SI8662BD-B-IS is a 6-channel CMOS digital isolator rated at 5000 Vrms with a maximum data rate of 150 Mbps and a common-mode transient immunity (CMTI) of 35 kV/us, housed in a 16-pin wide-body SOIC (7.50 mm) package. Built on Skyworks' proprietary RF-based isolation architecture, the device replaces legacy optocouplers in modern industrial and renewable-energy interfaces by integrating six isolated data paths in a single IC. What is a digital isolator? A digital isolator is a semiconductor device that transfers logic signals across an isolation barrier using high-frequency carrier modulation through a silicon-dioxide dielectric, providing galvanic isolation between two circuit domains while preserving signal integrity. Digital isolators occupy the broader hierarchy of signal-conditioning ICs, sitting between simple level shifters (no isolation) and full optocoupler replacements, and they belong to the interface IC category alongside RS-485 transceivers and CAN isolators. Key features include 5000 Vrms withstand voltage, six independent unidirectional channels, propagation delay of 8 ns typical, fail-safe output behavior with a power-on reset, and support for 2.5 V to 5.5 V supply rails on both sides. The wide-body SOIC package provides the reinforced creepage and clearance required for 5 kV reinforced isolation per IEC 60747-17 / VDE 0884-11. Operating quiescent current is below the datasheet typical value, and no external initialization is required at startup, eliminating the timing race conditions found in older LED-based optocouplers. Internally, the SI8662BD-B-IS uses on-off keying (OOK) modulation with differential RF carriers transmitted across a high-voltage CMOS dielectric barrier. An integrated differential receiver on the far side reconstructs the original logic transition with deterministic propagation delay (8 ns typical, 13 ns maximum). This topology achieves >60-year continuous operating life at the rated working voltage and provides stable CMTI behavior across the full industrial temperature range. Typical applications include industrial fieldbus isolation (RS-485, RS-232, CAN), solar inverter gate driver signaling, motor control encoder interfaces, PLC digital input modules, and isolated SPI/UART links. It is also widely used in medical patient-isolated data acquisition and EV battery management system (BMS) communications where reinforced isolation is mandatory. When designing with the SI8662BD-B-IS, place 0.1 uF bypass capacitors on each VDD pin within 2 mm of the IC, and verify PCB creepage of at least 8 mm across the package body to maintain rated isolation. Avoid routing signal traces or copper pours directly under the package body, since the dielectric barrier must remain the only galvanic path between the two domains. This page synthesizes distributor pricing, drop-in Si866x-family and competitor equivalents, and practical layout guidance that is not collected in any single manufacturer document.

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SI8710AC-B-IS

SI8710AC-B-IS - 3.75kV Digital Isolator, 1-Ch, 15Mbps | Skyworks

The Skyworks (formerly Silicon Labs) SI8710AC-B-IS is a single-channel, CMOS-based digital isolator rated at 3750 Vrms with a 15 Mbps data rate and >50 kV/us typical common-mode transient immunity (CMTI), housed in an 8-pin SOIC (3.90 mm body width) package. It is a pin-compatible, drop-in upgrade for popular high-speed digital optocouplers and replaces opto-LED/phototransistor solutions with a capacitive-coupling isolation barrier. A digital isolator is a semiconductor device that transfers logic-level signals across an isolation barrier using a non-electrical coupling mechanism (capacitive, inductive, or optical), while providing galvanic isolation between grounds. In the system hierarchy, digital isolators sit above simple logic isolators and below fully integrated isolated gate drivers and isolated ADCs. They are essential whenever a logic signal must cross a safety barrier such as an IEC 61800 / IEC 60950 reinforced insulation boundary, or when ground-potential differences between subsystems would otherwise create ground loops or fault paths. Key differentiating specifications include a 60 ns typical propagation delay, 20 kV/us minimum CMTI per datasheet, 3 V to 30 V wide supply voltage range on the output side, and an open-drain (open-collector) output stage that emulates the phototransistor of a traditional optocoupler. The CMOS isolation technology eliminates the LED aging and forward-current drift that plagues optocouplers, providing a 10x lower FIT rate and stable propagation delay across the full -40C to +125C automotive temperature range. Architecturally, the Si87xx family uses proprietary capacitive isolation with on-chip encoding/decoding. An internal oscillator modulates the input logic state across the capacitive barrier, and a differential receiver reconstructs the original signal with deterministic timing. Unlike optocouplers, there is no LED, no current-transfer-ratio degradation, and no need for an input buffer network beyond a simple series resistor. Typical applications include replacement of HCPL-4506/ACPL-247/PS2801 type optocouplers in industrial PLCs, gate-driver signal isolation for IGBT/MOSFET bridges in motor drives and solar inverters, isolated SPI/UART links in factory automation, isolated status feedback in switch-mode power supplies, and AEC-Q100 automotive battery-management isolation. When designing with this part, note that the Si8710AC-B-IS uses an open-drain output that requires an external pull-up resistor (typ. 1 kohm to 10 kohm) on the output node. Designers must also provide a bypass capacitor of at least 0.1 uF close to each supply pin and keep input-side current below 10 mA per datasheet. This page synthesizes distributor pricing, drop-in Si87xx family alternatives, and practical optocoupler-replacement design notes not consolidated in the manufacturer datasheet alone.

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SI8710AD-B-IS

SI8710AD-B-IS - 5kV Digital Isolator, 15Mbps, SDIP-6 | Skyworks

The Skyworks Solutions SI8710AD-B-IS is a 5 kVrms single-channel digital isolator housed in a 6-pin SDIP (0.295 inch / 7.50 mm width) wide-body package, designed as a pin-compatible drop-in replacement for popular optocouplers. It supports data rates up to 15 Mbps across a supply range of 3 V to 30 V, with a typical propagation delay of 60 ns, 20 kV/µs common-mode transient immunity (CMTI), and an open-collector output stage with 5 kV LED-emulator input. A digital isolator is a semiconductor device that transfers logic signals across a galvanic isolation barrier using high-voltage capacitors or RF/transformer coupling rather than an optocoupler's LED + photodiode path. Compared to optocouplers, CMOS-based digital isolators offer higher speed, tighter timing, lower power, and significantly better aging and temperature behavior. Digital isolators sit within the interface IC category of mixed-signal semiconductors and are the modern building block for safe signal transfer across high-voltage domains in industrial, automotive, and renewable-energy systems. The SI8710AD-B-IS integrates Skyworks' proprietary CMOS isolation technology in a wide-body SDIP-6 footprint, achieving 5000 Vrms reinforced isolation per VDE 0884-10 / UL 1577. The LED-emulator input eliminates the current-transfer-ratio (CTR) degradation that plagues optocouplers over time, while the open-collector output supports legacy 3.3 V to 30 V logic rails and bus-side pull-ups up to 30 V, simplifying system retrofits where the user is migrating away from a 6-pin DIP optocoupler. The Si87xx family is qualified to AEC-Q100 for automotive designs, supports up to 15 Mbps NRZ signaling, and delivers typical propagation delay of 60 ns with channel-to-channel matching suited to high-speed GPIO, SPI isolation, and serial communications lines. Because it is pin-compatible with industry-standard 6-pin DIP optocouplers, the SI8710AD-B-IS is often used as a modernization upgrade that improves speed, power, and reliability simultaneously. Typical applications include isolated GPIO interfaces, industrial fieldbus isolation (RS-232/RS-485, CAN, SPI), PLC I/O modules, solar inverter gate drivers, motor-control feedback paths, and battery-management system (BMS) communications. Designers also use it as a drop-in optocoupler replacement in SMPS feedback loops and digital input modules where 5 kV isolation is required. When replacing an optocoupler, verify the LED-emulator input current range matches the legacy LED forward current and confirm the open-collector output's rated voltage supports the new bus voltage. The wide-body SDIP-6 footprint matches standard 6-pin DIP optocoupler PCB land patterns, but creepage and clearance at the system level must still be reviewed for end-equipment safety certification. This page synthesizes distributor pricing, drop-in alternatives from the Si87xx family, and practical design guidance not found in the manufacturer datasheet alone.

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SI8710AD-B-ISR

SI8710AD-B-ISR - 5kV Digital Isolator, 15Mbps, 1-Ch | GreenPeak (Skyworks)

The GreenPeak (Skyworks) SI8710AD-B-ISR is a single-channel CMOS digital isolator rated for 5000 Vrms galvanic isolation with a maximum data rate of 15 Mbps and 20 kV/µs common-mode transient immunity (CMTI), housed in a 6-pin wide-body SOIC (SDIP-6) package. It replaces traditional LED-based optocouplers while delivering higher reliability, lower power consumption, and tighter propagation-delay specs at a fraction of the board area. An digital isolator is a semiconductor device that transfers a logic signal across an isolation barrier using high-voltage silicon-dioxide capacitors instead of an LED-and-photodiode chain. This architecture (CMOS isolation) is part of the broader signal-isolation IC family, which sits hierarchically above simple gate drivers and below the wider category of interface ICs. By eliminating the LED, the digital isolator removes the dominant aging mechanism of optocouplers, delivering stable CTR over decades of operation in industrial environments. Key features include a propagation delay of 60 ns typical (well under one 15 Mbps UI), 25 kV/µs static CMTI, an input supply range of 3.0 V to 5.5 V, and an output supply range of 3.0 V to 5.5 V (the 'D' suffix denotes the default input = output high; the part number 'B' denotes the wide-body SDIP-6 footprint). The device integrates refresh-input duty cycle monitoring and offers reliability through CMOS isolation technology that does not degrade with time or temperature, unlike LED-based optocouplers. Architecturally, the Si87xx family uses Silicon Labs' proprietary CMOS isolation technology, where two high-voltage capacitors form a 5000 Vrms barrier. An on-chip RF carrier modulated by the input data crosses the capacitor; the receiver demodulates and reconstructs the logic level on the secondary side. Because no LED is required, this configuration does not age, eliminating CTR drift across decades and harsh thermal cycles. Typical applications include industrial fieldbus isolation (RS-485, RS-232, CAN), PLC I/O module galvanic isolation, solar inverter gate-drive interfacing, medical equipment patient-isolation barriers, and switch-mode power supply feedback paths. The 5 kV rating meets IEC 60747-17 reinforced isolation for industrial control and IEC 60950-1 reinforced insulation for IT equipment, as cited in the Si87xx data sheet. When designing with this part, pay attention to PCB creepage and clearance: the wide-body SDIP-6 footprint provides 8 mm of creepage, sufficient for most reinforced-insulation systems up to 600 V working voltage. Decouple both VDD2/VDD1 with 0.1 µF + 10 µF ceramic capacitors placed within 10 mm of each supply pin to meet the 15 Mbps eye-diagram mask. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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SI8710BC-B-IS

SI8710BC-B-IS - 1-Ch 15Mbps Digital Isolator | Skyworks

The Skyworks Solutions SI8710BC-B-IS is a single-channel digital isolator that delivers up to 15 Mbps data rate across a 3.75 kVrms isolation barrier in an 8-pin SOIC package. It is a pin-compatible, drop-in solid-state replacement for legacy optocouplers, providing LED-emulator CMOS input and an open-collector output with common-mode transient immunity (CMTI) of 35 kV/us. Supply voltage operates across 3 V to 30 V, simplifying integration across 3.3 V, 5 V, 12 V, and 24 V system rails. What is a digital isolator? A digital isolator is a semiconductor device that transmits logic-level signals across an isolation barrier using high-voltage capacitive or magnetic coupling rather than optical (LED + photodiode) means. Digital isolators sit within the broader power management and signal conditioning hierarchy: digital isolator -> isolation IC -> interface IC -> analog/mixed-signal semiconductor. Compared to optocouplers, CMOS-based isolators eliminate LED aging, current-transfer-ratio (CTR) degradation, and temperature-dependent gain shifts, while also consuming roughly 10x less input bias current. Key specifications include 60 ns maximum propagation delay, 3750 Vrms withstand isolation voltage (per UL 1577 standards - see datasheet), >50 kV/us typical CMTI, and a wider 3 V to 30 V supply range that supports industrial 24 V rails. The Si87xx family is built on proprietary CMOS isolation technology that yields a 10x lower FIT rate than optocouplers, producing longer service life and immune to temperature, age, and forward-current effects that plague optical solutions. The Si87xx architecture uses an on-chip oscillator to convert the DC input into an AC carrier, capacitively couples it across the isolation barrier, and reconstructs the logic level on the secondary side. The open-collector output stage requires a pull-up resistor (typically 4.7 kOhm to 10 kOhm) on the output side and supports logic translation across different voltage domains, a useful feature when bridging 3.3 V microcontrollers to 24 V industrial inputs. Typical applications include PLC digital input modules, industrial fieldbus isolation (RS-485, CAN, Profibus node isolation), switching power supply feedback path isolation, and IGBT gate-drive signal isolation in motor drives. The 15 Mbps data rate is also adequate for SPI interface isolation at modest clock rates and for low-speed serial protocol bridging. When designing with this device, note that the input is an LED emulator (not a TTL/CMOS logic input) - the datasheet specifies minimum forward current, which the engineer must respect. The output pull-up resistor value must be chosen to balance speed against power dissipation; 4.7 kOhm is a common starting point for 5 V rails. This page synthesizes Skyworks datasheet values, distributor pricing tiers, same-brand Si87xx drop-in options, and practical design notes not found in any single manufacturer document.

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SI8711CC-B-IS

SI8711CC-B-IS - 3.75 kV Digital Isolator, 1 Mbps, 8-SOIC | Skyworks

The Skyworks SI8711CC-B-IS is a single-channel CMOS digital isolator that delivers 3750 Vrms isolation and 1 Mbps data rate in an 8-pin SOIC (0.154 inch / 3.90 mm width) package. Designed as a pin-compatible, drop-in upgrade for popular optocouplers, the device replaces the LED + photodetector path of an optocoupler with an RF carrier and CMOS isolation barrier. It operates from a 3.0 V to 5.5 V supply on both sides and provides open-drain output behavior with an integrated LED emulator input, enabling direct replacement of existing opto-isolated logic interfaces without firmware or schematic changes. A digital isolator is a semiconductor device that transfers logic-level signals across a galvanically isolated barrier using capacitive, inductive, or optical-emulation coupling while blocking DC and low-frequency voltage transients between the input and output domains. Digital isolators belong to the broader interface-IC hierarchy (interface IC > digital isolator > CMOS isolator > optocoupler replacement) and serve as modern, high-reliability substitutes for traditional optocouplers in industrial, telecom, and instrumentation systems. Key features include 20 kV/µs minimum common-mode transient immunity (CMTI), >50 kV/µs typical CMTI, low power consumption enabled by CMOS construction, a 10x lower FIT rate than optocouplers, and immunity to temperature, age, and forward-current drift. The 8-SOIC (0.154 inch width) footprint is PCB-compatible with industry-standard 8-pin optocouplers, allowing direct drop-in substitution on existing boards. Operating temperature range is -40 °C to +125 °C, and the device is rated for 3.75 kVrms (per UL 1577) reinforced isolation. Architecturally, the Si87xx family uses proprietary CMOS isolation technology: an RF carrier is modulated by the input logic and coupled across the internal isolation barrier, then demodulated and presented at the output as an open-drain signal that mirrors optocoupler behavior. This emulates the LED + phototransistor transfer curve so that legacy optocoupler drive circuits work without modification, while eliminating LED aging, low CTR, and slow switching speed limitations. Typical applications include isolated logic-level interfaces in industrial PLCs, isolated gate-drive feedback in motor drives and solar inverters, isolated data acquisition front-ends, isolated UART/SPI between MCU and high-voltage domains, and replacement of legacy optocouplers in telecom and instrumentation equipment. When designing in this part, verify that the upstream driver can source the Si87xx input current (typically a few mA) and that the open-drain output pull-up voltage is within the device's VDD range. Decoupling capacitors (0.1 µF ceramic) should be placed close to each supply pin. The 8-SOIC footprint allows direct solder-pad compatibility with legacy opto footprints. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that complement - but do not substitute for - the Skyworks Si87xx datasheet.

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SI8712AC-B-ISR

SI8712AC-B-ISR - 3.75 kV Digital Isolator, 15 Mbps, SOIC-8 | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI8712AC-B-ISR is a general-purpose single-channel digital isolator rated at 3750 Vrms with 15 Mbps data rate and 20 kV/µs typical common-mode transient immunity (CMTI), housed in a surface-mount 8-SOIC (0.154", 3.90 mm width) package. The -ISR suffix denotes Tape & Reel packaging. The device delivers pin-compatible, drop-in optocoupler replacement functionality in industrial and consumer applications requiring galvanic isolation between logic domains. A digital isolator is a semiconductor device that transfers logic signals across an isolation barrier using capacitive, inductive (transformer), or RF carrier coupling instead of an LED-and-phototransistor optical path. Compared with traditional optocouplers, CMOS digital isolators such as the Si87xx family typically exhibit 10x lower FIT rates, wider operating temperature ranges (-40 to +125 °C), much higher CMTI (>50 kV/µs typical), and freedom from aging and forward-current degradation effects. The Si8712 belongs to the silicon isolator category within the broader interface ICs hierarchy. Key features of the SI8712AC-B-ISR include 3750 Vrms reinforced isolation, 15 Mbps NRZ signaling capability, an open-drain / open-collector output stage (option letter "C"), and an LED-emulator input that mimics the biasing characteristics of a standard optocoupler. According to the Si87xx family datasheet, this makes the part a true drop-in alternative to popular high-speed optocouplers such as HCPL-0720, HCPL-0723, and 6N137 in PCB footprint and pinout. The Si87xx architecture uses an internal RF carrier modulated by the input logic and recovered on the isolated side, with on-chip transformers replacing the optical coupling path. This approach eliminates LED wear-out, eliminates the need for input current limiting in most cases, and consumes less board area than discrete optocouplers with the same isolation rating. Typical applications include isolated gate-drive interfaces, industrial fieldbus (RS-485, CAN, SPI) isolation, PLC I/O modules, switching power supply feedback isolation, and medical equipment patient-isolated data links. The 3.75 kV rating suits most 230 V AC mains-connected industrial systems as well as low-voltage battery management isolation. Designers should verify that downstream logic tolerates the open-collector output pull-up voltage (typically 3 to 30 V), and place a 0.1 µF bypass capacitor close to VDD on each side. The Si87xx family is footprint-compatible with industry-standard 8-pin optocouplers, allowing drop-in PCB reuse.

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SI8715BC-A-IS

SI8715BC-A-IS - 3.75 kV 1-Ch Digital Isolator 15 Mbps SOIC-8 | Skyworks

The Skyworks (formerly Silicon Labs) SI8715BC-A-IS is a single-channel digital isolator in an 8-pin SOIC package that delivers 3750 Vrms of galvanic isolation, 15 Mbps of data throughput, and >50 kV/us typical common-mode transient immunity (CMTI). It is built around an RF carrier / emulated-LED architecture rather than a traditional optocoupler, which removes the aging, temperature, and forward-current degradation effects inherent to optocouplers. A digital isolator is an interface IC that transfers a high-speed digital signal across an isolation barrier while blocking DC and low-frequency transients between two grounds. The SI8715BC-A-IS is part of the Si87xx family — pin-compatible, single-channel, drop-in upgrades for popular high-speed digital optocouplers — and offers roughly 10x lower FIT rate, wider temperature tolerance, and higher CMTI than a discrete opto/LED pair. Within the system taxonomy it belongs to digital isolators -> interface isolators -> isolation ICs -> power management & interface signal chain. Key features include 3.75 kVrms withstand voltage per UL 1577, 2.5 V to 5.5 V logic-side supply, 50 ns typical propagation delay, low input current draw, and a wide industrial -40C to +125C operating range. The 8-SOIC body is the industry-standard optocoupler footprint, so legacy optocoupler designs can be retrofitted without PCB rework. Architecturally, the device uses an on-chip RF oscillator that feeds a differential capacitive or transformer isolation barrier, with a demodulator and Schmitt-triggered output stage reproducing the input logic level on the load-side supply rail. The emulated-LED front end draws a defined bias current at the input pin, so it can be driven directly from a microcontroller GPIO without the resistor-divider network that an optocoupler requires. Typical applications are PLC digital-input modules, industrial sensor isolation, isolated gate-driver signal paths, switched-mode power supply (SMPS) feedback, and isolated SPI / UART links. The part is also a drop-in optocoupler replacement in solid-state relays, motor-control I/O isolation, and medical-device signal isolation where regulatory 5 kV isolation is not required but 3.75 kVrms is sufficient. When designing in, note that input pin 2 must be tied through a resistor to the driving logic source because the input is a current-driven emulated LED, not a CMOS logic input. Add a 0.1 uF decoupling capacitor close to each supply pin to ride through fast CMTI events, and avoid extending traces past the package body to maintain the rated isolation. This page aggregates distributor pricing, same-brand Si87xx drop-in alternatives, and practical PCB/EMI design guidance that is not consolidated in the manufacturer datasheet, giving engineers a faster path from schematic to qualified BOM.

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SI8901B-A01-GS

SI8901B-A01-GS - 10-bit Isolated I2C ADC, 2.5kV | Skyworks

The Skyworks Solutions (formerly Silicon Labs) SI8901B-A01-GS is a 2.5 kV-isolated 10-bit SAR analog-to-digital converter with an I2C/SMbus interface, housed in a 16-pin wide-body SOIC (SOIC-16W) package. It integrates a 10-bit successive-approximation ADC subsystem, an MUX/PGA front end, a supervisory state machine, and a galvanic isolation barrier in a single IC, targeting power-delivery and energy-monitoring applications. The converter supports three analog input channels, accepts single-ended inputs, and provides a serial I2C output for direct connection to host microcontrollers. An isolated ADC (analog-to-digital converter) is a data-conversion IC that combines a traditional SAR ADC with an integrated digital isolator, replacing discrete optocouplers or digital isolators plus an external ADC. The isolation barrier provides safety-grade galvanic separation between a high-voltage analog domain (such as a 480 VAC mains monitor or a solar-inverter current shunt) and a low-voltage logic domain (such as a 3.3 V MCU). Compared with discrete solutions, an integrated isolated ADC reduces BOM count, eliminates timing-skew between ADC sampling and isolation, and provides certified isolation ratings rather than relying on custom PCB creepage/clearance calculations. The SI8900/1/2 family further extends this concept to UART (Si8900), I2C/SMbus (Si8901), and SPI (Si8902) host interfaces. Key features include 2.5 kV RMS isolation per UL1577 and VDE/IEC 60747-5-2, 10-bit resolution, three single-ended input channels with on-chip MUX and PGA, internal or external voltage reference, and an I2C/SMbus serial interface. The device operates from a 2.7 V to 5.5 V analog supply and a 3.0 V to 5.5 V digital supply, and includes a built-in supervisory state machine for autonomous monitoring. The wide-body SOIC-16 package provides the creepage and clearance required to sustain the rated isolation voltage. Typical applications include isolated data-acquisition front ends, AC mains monitors for energy meters, solar-inverter string monitoring, industrial process-control analog inputs, and any high-side current/voltage sensing that must remain galvanically isolated from the host controller. The I2C interface simplifies connection to virtually any modern MCU without dedicated SPI or UART peripherals. When designing with this part, place 0.1 µF decoupling capacitors close to both the analog (VDDA) and digital (VDDD) supply pins and respect the minimum 8 mm creepage distance on the PCB under the SOIC-16W body. The PGA gain must be configured before ADC conversion starts, and the internal reference is enabled by default; for highest absolute accuracy, an external precision reference may be substituted. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Skyworks datasheet.

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SI8901D-A01-GS

SI8901D-A01-GS - 10-Bit Isolated Monitoring ADC | Silicon Labs

The Silicon Labs SI8901D-A01-GS is a 10-bit isolated monitoring analog-to-digital converter that combines a three-channel analog input multiplexer, a programmable-gain amplifier (1x or 0.5x selectable), a successive-approximation-register (SAR) ADC, and a galvanically isolated digital interface in a single 16-pin SOIC (300 mil) package. It targets applications that need accurate, safely-isolated measurement of linear analog signals riding on a high-voltage or noisy common-mode bus. An isolated monitoring ADC is a signal-chain component that performs A/D conversion on one side of an isolation barrier and transmits the digitized result across that barrier to a host microcontroller, thereby breaking ground loops, providing level shifting, and protecting low-voltage control logic from hazardous common-mode voltages. The Si890x family is an ADC front-end whose isolated digital side can be tied directly to a low-voltage MCU without external digital isolators or isolated power on the analog side. Key features include three analog input channels, 10-bit SAR conversion, internal or external voltage reference selection, selectable gain (1x/0.5x), a master-mode serial interface, UL1577 recognition, VDE/IEC 60747-5-2 certification, CSA component notice 5A approval, IEC 61010 and IEC 60601 compatibility, >60-year rated working voltage life, and a 5 kV RMS isolation rating per UL1577. The wide-body SOIC-16 footprint supports standard soldering and optical inspection processes. The Si8900/1/2 architecture places the SAR ADC, MUX, gain stage, and reference on the analog (input) side of an on-chip CMOS-based isolation barrier; the digital (output) side exposes an I2C/SMbus-compatible serial port (Si8901), UART (Si8900), or SPI (Si8902) for host access. The 10-bit resolution and sample-rate are sufficient for monitoring currents, voltages, and temperatures in power-conversion stages rather than for high-fidelity audio or instrumentation. Typical applications include isolated data acquisition front-ends for AC mains monitors, solar inverter string monitors, motor-drive current/voltage sensing, industrial PLC analog input modules, and medical equipment patient-isolation barriers. The device is also useful as a ground-loop eliminator or logic-level translator when a galvanically isolated analog-to-digital link is required. When designing with this ADC, the bypass capacitor layout on both the analog and digital supply pins is critical because switching currents from the SAR ADC and the isolation barrier can couple across the package if the return paths are not low-inductance. Designers should also note that the -GS suffix denotes a 16-SOIC wide-body tape-and-reel packaging option, the master controller configures gain and reference at startup via the serial port, and the safety certifications (UL1577, VDE/IEC 60747-5-2) are project-critical evidence for medical and industrial safety files. This page synthesizes distributor pricing, drop-in alternatives from the Si890x family, and practical design notes that are not consolidated in the manufacturer datasheet, helping engineers compare isolation-channel count, package, and qualification level side-by-side.

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SI8902D

SI8902D - 10-Bit Isolated Monitoring ADC w/ SPI | Skyworks

The Skyworks Solutions SI8902D-A01-GS is a 10-bit isolated monitoring analog-to-digital converter (ADC) with three single-ended input channels and an SPI-compatible serial interface, housed in a 16-pin SOIC (0.295" / 7.50 mm width) package. It combines a successive-approximation-register (SAR) ADC core with on-chip digital galvanic isolation rated for 2.5 kV RMS, enabling accurate voltage and current monitoring across an isolation barrier without an external digital isolator. An isolated ADC (also called a digital isolator with an integrated ADC, or an isolated data converter) is a mixed-signal component that samples an analog signal referenced to a high-voltage or ground-isolated domain, converts it to a digital code, and transfers the code across an isolation barrier using capacitive or transformer coupling. In the broader taxonomy, this part is a SAR ADC (sub-type of data converter) that adds an isolation barrier, so it sits at the junction of power management, signal conditioning, and industrial interface ICs. Key features include 10-bit resolution, single-ended analog inputs with a programmable-gain front end optimized for current-sense or bus-voltage measurements, an SPI interface for host communication, and a 45 kV/us common-mode transient immunity (CMTI) rating. The integrated 2.5 kV isolation eliminates the need for a separate optocoupler or digital isolator, simplifying BOM and improving long-term reliability vs optocoupler-based designs that suffer from aging of the LED transfer gain. Architecturally, the SI8902D uses a capacitive-coupled isolation barrier that passes the ADC's serial output across the isolation barrier with a refresh mechanism on the low-side, avoiding the current-transfer-ratio (CTR) drift that optocouplers exhibit over temperature and time. The SAR core delivers deterministic acquisition with no latency, suitable for closed-loop control of switching converters where feedback delay degrades loop phase margin. Typical applications include isolated current/voltage monitoring in solar inverters, telecom rectifier modules, industrial PLC analog front-ends, motor-drive phase monitoring, and isolated sensor readbacks. The wide 2.7 V to 3.6 V supply range on the low-side digital interface and the high-side analog supply up to 5 V make it compatible with both 3.3 V MCUs and 5 V analog front-ends. Designers should place 0.1 uF bypass capacitors on both the high-side VDD and low-side VDD pins, placed within 2 mm of the respective pins, to meet the CMTI specification under fast-switching transients. The 16-SOIC footprint has a standard 1.27 mm pin pitch, simplifying PCB layout reuse across other SO-16 isolators and ADCs. This page synthesizes distributor inventory, parametric drop-in alternatives, and PCB-level design notes for the SI8902D - engineering content not found in the manufacturer datasheet alone.

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SI8902D-A01-GS

SI8902D-A01-GS - 10-Bit Isolated Monitoring ADC, SPI, 16-SOIC | Skyworks

The Skyworks Solutions SI8902D-A01-GS is a 10-bit isolated monitoring analog-to-digital converter (ADC) with a 2.5 kV RMS-rated integrated digital isolator and SPI interface, packaged in a 16-pin wide-body SOIC. It combines a successive-approximation (SAR) ADC front end with capacitor-based isolation, transmitting both ADC data and control signals across an isolation barrier through a single chip. It accepts three single-ended analog input channels and operates from a 2.7 V to 5.5 V supply rail. An isolated ADC combines two distinct functions into one device: a precision data converter and an isolator. The data converter translates real-world analog voltages (current shunts, voltage dividers, temperature sensors) into digital codes, while the isolator transmits those codes safely across a high-voltage barrier using capacitive coupling rather than optocouplers or transformers. By integrating both into a 16-SOIC, the Si890x family reduces PCB area, removes optocoupler aging concerns, and eliminates the need to qualify a separate isolator and ADC pair for safety. Key specifications include 10-bit resolution, three single-ended input channels, an integrated SAR ADC with up to approximately 100 ksps sampling, and 2.5 kV RMS galvanic isolation per UL 1577. The wide-body 16-SOIC with 7.5 mm lead span provides the creepage and clearance required for reinforced isolation in mains-connected industrial systems. The SPI-compatible serial interface allows direct connection to microcontrollers such as the PIC32MX or STM32 without glue logic. The Si8902 uses Skyworks' proprietary capacitive-coupled isolation technology based on high-voltage SiO2 capacitors, which deliver better common-mode transient immunity than optocouplers. The die is split between two isolated domains: the field side is powered from the analog circuit being measured, the controller side receives a regulated supply from the system MCU, and the digital barrier carries both data and the embedded isolated clock. Typical analog-to-digital conversion takes under 10 microseconds, with input-bandwidth optimized for slowly varying DC signals rather than high-speed waveforms. Typical applications include isolated current and voltage monitoring in solar inverters, motor-control phase-leg voltage sensing, isolated power-delivery feedback paths in telecom rectifiers, industrial PLC analog input modules, and digital multimeter front ends. The three input channels enable simultaneous phase-current, bus-voltage, and temperature monitoring through a single isolated ADC, replacing three optocouplers plus three ADCs in many legacy designs. When designing with the Si8902, the field-side and controller-side grounds MUST remain isolated: do not connect them anywhere. A 0.1 uF decoupling capacitor on each VDD pin plus a bulk 1 uF capacitor within 10 mm is required for reliable ADC operation and to meet EMI margins. Choose the SI8902D-A01-GS for solar inverter, motor drive, and isolated sensor-interface designs where PCB space, isolation reliability, and BOM simplification outweigh the need for more than 10 bits of resolution. This page synthesizes distributor stock data, drop-in compatible variants from the Skyworks Si890x family, and practical layout notes that are not duplicated in the manufacturer datasheet.

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SI8921BD-IS4

SI8921BD-IS4 - ±250 mV Isolated Amplifier, 5 kV | Skyworks

The Skyworks Solutions SI8921BD-IS4 is a galvanically isolated analog amplifier with a ±250 mV differential input range, 5.0 kV RMS isolation rating, and differential output, housed in a wide-body stretched SOIC-8 package. Key headline specifications include 0.8 µs signal delay, ±0.40 µV typical input offset, ±0.06% typical gain error, 0.5 µV/°C offset drift, and -9 ppm/°C typical gain drift, providing accurate current-shunt measurement across industrial temperature ranges. An isolated amplifier is a type of analog amplifier that combines a precision front-end differential amplifier with a galvanic isolation barrier, transferring the signal across the barrier through capacitive or transformer coupling. The isolation barrier protects low-voltage control circuitry from high-voltage common-mode transients on the field side, enabling safe measurement of floating signals such as those present across current-shunt resistors in motor drives, solar inverters, and uninterruptible power supplies. Within the broader hierarchy, an isolated amplifier belongs to the isolation IC family, which includes digital isolators and isolated gate drivers - all of which form essential building blocks in power-management and industrial-automation systems requiring reinforced insulation per IEC 60747-17 and UL 1577. The SI8921BD-IS4 features a specified input range of ±250 mV, well suited for direct connection across low-ohm shunt resistors in high-current paths. Its differential output swings to a 2.5 V peak full-scale signal, which can be fed directly into the ADC front-end of a motor controller or power-conversion MCU. The device's low offset and drift specifications eliminate the need for periodic calibration in many systems, while its 0.8 µs propagation delay supports closed-loop current control in fast-switching converters. Architecturally, the SI8921BD-IS4 integrates a precision chopper-stabilized input amplifier, a sigma-delta modulator, an isolation capacitor barrier, and a differential output decoder on the low-voltage side. The internal LDO regulators on both sides of the barrier simplify power-supply design - the high-side is powered from a 3.0 V to 5.5 V supply, and the low-side is powered independently from 3.0 V to 5.5 V. The CMOS output stage is capable of driving 2 kΩ loads with low distortion. Typical applications include current-shunt monitoring in three-phase motor drives, photovoltaic inverter string-current sensing, UPS battery-current measurement, industrial process-control isolation, and high-voltage rail monitoring in telecom rectifiers. The differential output interfaces directly with SAR ADCs and sigma-delta converters found in C2000 and PIC32 families. When designing with this device, place bypass capacitors of 0.1 µF and 1 µF close to both VDDA and VDDD pins, keep the input traces short and balanced to preserve CMRR, and observe the creepage and clearance rules of the wide-body SOIC-8 footprint to maintain the 5 kV isolation rating. The differential output should be routed as a matched pair to avoid common-mode pickup in noisy switching environments. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer product page or distributor listing.

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SIM3U156-B-GM

SIM3U156-B-GM - 80MHz Cortex-M3 USB MCU, 128KB Flash | Silicon Labs

The Silicon Labs SiM3U156-B-GM is a 32-bit ARM Cortex-M3 microcontroller with speeds up to 80 MHz, 128 KB of Flash, and an integrated USB 2.0 Full-Speed controller, housed in a 64-pin QFN (9x9 mm) package with exposed pad. It belongs to the Precision32 SiM3U1xx USB MCU family and delivers DSP instructions plus a single-precision floating-point unit on-chip. The SiM3U156-B-GM combines these features in an energy-friendly architecture with fast wake-up times, multiple low-power modes, and a peripheral reflex system that allows autonomous I/O operation independent of the CPU. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program/data memory, and programmable peripherals. The Cortex-M3 core family is a 32-bit ARMv7-M architecture optimized for deterministic real-time control with low interrupt latency. Within the broader taxonomy, this device is a Cortex-M3 -> more general (ARM Cortex-M) -> 32-bit MCU -> microcontroller -> system-on-chip family member. USB MCUs add an integrated USB 2.0 Full-Speed PHY and transceiver, eliminating the need for an external PHY in many designs. Key differentiating specifications include 128 KB Flash, 8 KB SRAM, 80 MHz core clock with DSP extensions, USB 2.0 Full-Speed device/host/OTG, integrated voltage regulator, and multiple low-power modes. The package exposes up to 55 GPIO across 64 pads including analog and USB signal lines, supporting both 2.5V and 3.3V supply domains commonly required in USB-powered peripherals and battery applications. The SiM3U1xx family uses the Cortex-M3 core with a single-cycle multiplier and hardware divider, plus a full DSP instruction set. An integrated LDO regulates the internal 1.8V core domain from an external 2.5V-3.6V VDD. The peripheral reflex system (PRS) routes events such as ADC triggers and timer matches directly between peripherals, reducing CPU wake load and enabling deterministic peripheral timing without CPU intervention. Typical applications include USB peripherals (HID, CDC, audio class devices), wearables, IoT edge nodes, industrial sensor hubs, and human-machine interface (HMI) panels. The 9x9 mm QFN-64 footprint suits space-constrained designs, and the integrated USB PHY reduces BOM for dongle and cable-connected products. Designers should bias the VBUS and VDDIO rails independently when operating USB bus-powered designs, since the on-chip PHY derives its reference from VBUS. Reference the Silicon Labs USB library and Precision32 firmware examples to shortens USB certification, software- and HID-class development cycles. This page consolidates distributor pricing, parametric proximity analysis, and engineering design notes beyond what is widely scattered across the manufacturer datasheet and reference manuals.

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SIT1040T

SIT1040T - 5V CAN Transceiver, SO-8, 1Mbps | SIT

The SIT SIT1040T is a 5V high-speed Controller Area Network (CAN) transceiver in an SO-8 package providing ±40V bus fault protection and 1 Mbps data rate. Fully ISO 11898 compliant, it operates from a 4.5V to 5.5V supply (typical 5V) and is compatible with 3.3V and 5V microcontroller TXD/RXD logic levels, allowing direct connection to both 3.3V MCUs (e.g., ARM Cortex-M0) and 5V MCUs (e.g., classic CAN nodes) without level shifters. A CAN transceiver (Controller Area Network transceiver) is a physical-layer (PHY) IC that converts the differential CAN_H/CAN_L bus signals into the single-ended TXD/RXD logic levels required by a CAN protocol controller. It sits between the CAN controller (usually embedded in a MCU or an external controller such as an MCP2515) and the physical two-wire bus, providing the dominant/recessive differential signaling, current drive for the bus, and protection against ESD/overvoltage transients that occur in automotive and industrial environments. CAN transceivers are essential building blocks of in-vehicle networking (IVN), industrial automation, and any distributed embedded system requiring robust multi-node communication up to 1 Mbps over long cables. The SIT1040T integrates thermal shutdown, short-circuit protection (70 mA drive), TXD dominant time-out to prevent permanent bus blocking if the controller fails, and a very low-current standby mode with remote wake-up capability. These features collectively support functional safety by preventing a single faulty node from disabling the entire bus (dominant time-out) and reducing quiescent current when the ECU enters sleep mode. The 5V supply and ±40V bus tolerance make it well-suited for 12V automotive and 24V industrial bus rails. Internally, the device uses a differential driver and receiver architecture based on a bandgap reference and current-mode loop, achieving the 1 Mbps signaling rate required by ISO 11898-1 high-speed CAN. Bus-side ESD protection is integrated, and the ±40V tolerant bus pins survive load-dump and jump-start transients commonly seen in 12V automotive systems. The receiver provides a recessive bias on the bus to maintain defined bus levels when no node is transmitting. Typical applications include automotive ECU body and chassis CAN bus nodes, industrial PLC and inverter CAN communication, building automation (BACnet via CAN), medical instrument inter-board communication, and any 5V embedded system requiring an ISO 11898 high-speed CAN link. The SO-8 package makes it well-suited for compact PCBs and retrofit upgrades of legacy designs that previously used TJA1050 or PCA82C250. When designing with the SIT1040T, add a 5V TVS diode (e.g., SMBJ5.0CA) and a common-mode choke on the bus for EMC robustness in automotive installations, and place a 100 nF decoupling capacitor within 5 mm of the VCC pin. The TXD dominant time-out setting is internal and cannot be disabled - design the firmware to keep TXD dominant periods under the device's timeout window. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical EMC design notes that are not found in the manufacturer datasheet alone.

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SIT1044T

SIT1044T - 5Mbps CAN FD Transceiver, SOP-8 | SIT

The SIT1044T is a 5 Mbps CAN FD (Flexible Data-rate) transceiver from SIT (芯力特), fully compliant with the ISO 11898-2:2016 high-speed CAN physical layer standard, supplied in an 8-pin SOP-8 surface-mount package. It integrates a single transmit (TXD) channel and a single receive (RXD) channel between a CAN protocol controller and the differential CAN bus, supporting data rates up to 5 Mbps for classical CAN and CAN FD frames. The device operates from a 4.75 V to 5.25 V supply, draws 70 mA (typical) in dominant mode, and features a low-power standby mode with 30 µA quiescent current that is awakened via bus activity or the dedicated WAKE pin. A CAN transceiver is a physical-layer interface IC that translates the single-ended TXD/RXD logic signals from a microcontroller into the differential CANH/CANL bus voltages required by the CAN protocol, while also providing ESD protection, common-mode voltage tolerance and bus dominant-timeout safeguards. CAN transceivers sit between the protocol controller (often integrated in an MCU) and the twisted-pair CAN bus, forming the bridge between the application’s digital logic and the in-vehicle or industrial network. The SIT1044T belongs to the high-speed CAN physical-layer family, sitting hierarchically as: CAN transceiver → CAN physical-layer IC → Interface IC → Integrated Circuit. Key specifications include ±40 V bus fault protection on CANH and CANL, ±8 kV HBM ESD on bus pins (per the manufacturer datasheet), an operating temperature range of -40 °C to +125 °C, transmitter dominant time-out, thermal shutdown, and under-voltage protection on VCC. The receiver offers high input impedance and a wide common-mode range, while the transmitter delivers a tightly matched differential output to minimise EMI on the bus. Architecture-wise, the SIT1044T uses a bipolar-CMOS-DMOS mixed process that allows ±40 V bus tolerance with low quiescent draw. Internal slope-control circuitry adjusts the CANH/CANL edge rate to suppress EMI without sacrificing the 5 Mbps data rate demanded by CAN FD payloads. Typical applications include automotive body electronics (BCM, door modules, seat controllers), industrial CAN nodes (PLCs, servo drives, sensors), CAN-to-UART gateways, and BMS (Battery Management System) slave nodes in 12 V/24 V systems. The WAKE pin and low-power standby mode make it suitable for CAN partial networking and always-on ECUs. When designing with the SIT1044T, place a 100 nF ceramic bypass capacitor close to VCC (pin 8) and follow the manufacturer’s reference layout for the split-termination network (typically 60 Ω with two 10 nF capacitors to ground) on the bus to meet IEC 62228-3 / SAE J2962-2 EMC requirements. A common-mode choke is recommended for highly noisy environments. This page synthesises distributor pricing, drop-in alternative cross-references and practical design notes not found in the manufacturer datasheet alone.

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SIT1602BC-22-33S-38.000000

SIT1602BC-22-33S-38.000000 - 38 MHz MEMS LVCMOS XO | SiTime

The SiTime SIT1602BC-22-33S-38.000000 is a 38.000 MHz fixed-frequency MEMS-based XO (crystal oscillator) with HCMOS/LVCMOS output, supplied in a 4-pin 3.2x2.5 mm SMD no-lead package. It operates from a continuous 1.8 V to 3.3 V supply (3.3 V nominal in this variant) and integrates Standby (Power Down) functionality for battery-powered applications. Per the SiTime SiT1602 datasheet, the device consumes 4.5 mA typical active current and supports frequencies from 3.57 MHz to 77.76 MHz, of which 38 MHz is one of 52 standard frequencies offered. An XO (crystal oscillator) is a self-contained timing device that delivers a stable square-wave reference clock to digital logic, MCUs, FPGAs, SoCs, and serializer/deserializer (SerDes) channels. In the broader taxonomy, an XO sits below the TCXO/VCTCXO/OCXO classes and above a bare quartz crystal: a quartz crystal alone cannot drive a load, whereas an XO combines the resonator with an amplifier and output buffer in one package. MEMS oscillators such as the SiT1602 family replace legacy quartz with silicon micro-electromechanical resonators, improving shock/vibration tolerance and shortening lead times. Key features of the SIT1602BC-22-33S-38.000000 include ±25 ppm frequency stability over -20 °C to +70 °C, total stability as low as ±20 ppm across the wider -40 °C to +85 °C operating range, 100% pin-to-pin compatibility with quartz-based XO footprints, and a standby current that preserves battery life. The 38 MHz output is a commonly required reference for Ethernet PHYs, USB 2.0 controllers, and mid-speed MCU peripherals. The SiT1602B architecture pairs a silicon MEMS resonator with a programmable analog ASIC and LVCMOS driver, achieving faster start-up than typical quartz oscillators while eliminating the quartz crystal's susceptibility to shock. Its 4.5 mA active supply current makes it suitable for always-on or battery-backed designs. Typical applications include Ethernet PHY reference clocks, USB 2.0 full-speed clocks, MCU/MPU clock trees, portable industrial handheld terminals, and consumer audio/video peripherals. The wide 1.8-3.3 V continuous supply range also allows a single BOM configuration across multiple rails, simplifying inventory. When designing in the SIT1602BC-22-33S-38.000000, place a 0.1 µF decoupling capacitor within 2 mm of the VDD pin and keep the output trace short to minimise reflections on this fast-edged LVCMOS signal. For standby control, drive the ST pin logic-low to enter power-down. This page synthesizes distributor stock, drop-in SiT1602 alternatives, and practical design notes beyond the manufacturer datasheet for engineers evaluating the 38 MHz fixed-frequency MEMS XO option.

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SIT9002AI-432N33EQ200.00000Z

SIT9002AI-432N33EQ200.00000Z - 200 MHz HCSL Spread-Spectrum XO | 6-SMD

The SiTime SIT9002AI-432N33EQ200.00000Z is a programmable spread-spectrum differential oscillator from the SIT9002 family, factory-configured at 200 MHz with HCSL output, 3.3 V supply, ±50 ppm frequency stability, and a 5.0 x 3.2 mm 6-SMD package. According to the SiTime datasheet, the SIT9002 platform is the industry's first programmable spread-spectrum differential oscillator and supports four programmable differential output signaling types: LVPECL, LVDS, CML, and HCSL across a 1 MHz to 220 MHz frequency range. This specific part-number suffix decodes as: AI = industrial grade, 43 = 5.0 x 3.2 mm 6-SMD, 2 = HCSL output, N33 = 3.3 V supply, E = Enable/Disable pin, Q = ±50 ppm stability, 200.00000 MHz center frequency, Z = factory-programmed customer configuration. Spread-spectrum clocking is a technique used to reduce peak electromagnetic interference (EMI) by modulating the output frequency over a wide band, lowering the fundamental tone-of-frequency amplitude measured in dBµV/m. The SIT9002 supports both center-spread and down-spread modes with programmable spread percentages, allowing system designers to meet stringent EMI compliance targets without adding shielding or filtering. As a programmable SiTime part, this device is built on a silicon MEMS resonator rather than a quartz crystal, providing superior shock and vibration resistance and eliminating the start-up reliability issues common to traditional crystal oscillators. Key electrical features of the SIT9002 family include: ±50 ppm total frequency stability across the full industrial temperature range (-40 °C to +85 °C), low jitter differential outputs suitable for PCI Express Gen-1 reference applications, and integrated Enable/Disable pin (pin 1) for power management. The HCSL output format is reference-terminated at the receiver and is commonly used for chip-to-chip clocking on PCI Express, Serial ATA, and RapidIO interfaces. Unlike LVPECL which requires external biasing, HCSL simplifies board design by allowing a source-terminated series resistor at the driver output. Typical applications include PCI Express expansion cards and chipsets, server and storage area networking clock distribution, industrial controllers with EMI-sensitive enclosures, and SATA/SAS storage interfaces. The wide programmable frequency range (1 to 220 MHz) and four programmable pin shapes (LVPECL/LVDS/CML/HCSL) make the SIT9002 family a flexible platform for designers who want a single BOM line that covers multiple frequency plans and output standards. When designing with this part, ensure the load capacitors specified in the datasheet are placed close to the receiver, and that the HCSL source-termination resistor (typically 33 Ω) is selected per the SiTime reference schematic. For best EMI performance, use the down-spread mode with at least ±0.25 % spread percentage, which typically reduces measured EMI by 7-10 dB on the fundamental. This page synthesizes distributor pricing, drop-in alternative MPNs, and application-specific design notes not found in the manufacturer datasheet itself.

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SJA1105ELY

SJA1105ELY - 5-Port 1Gbps Automotive Ethernet Switch | NXP

The NXP Semiconductors SJA1105ELY is an IEEE 802.3-compliant five-port automotive Ethernet switch with 5 Gbps switching throughput, support for 10, 100, and 1000 Mbps per port, and a 159-pin LFBGA tape-and-reel package. Designed for modular in-vehicle connectivity, it allows each port to be configured independently and supports AVB automotive Ethernet applications. An automotive Ethernet switch is a networking semiconductor that connects electronic control units through standardized Ethernet interfaces and forwards frames between automotive network segments. Within the vehicle electronics hierarchy, the SJA1105ELY belongs to the Ethernet switch class, network interface IC category, and broader automotive embedded-networking ecosystem. Its role is to centralize connections among processors, switches, and physical-layer devices while supporting multiple Ethernet operating modes. The SJA1105ELY is identified as an AEC-Q100 automotive part, and the verified product information describes it as a five-port AVB automotive Ethernet switch. Its 5 Gbps aggregate switching throughput provides a defined performance envelope for modular ECUs, while independent 10/100/1000 Mbps operation allows mixed-speed network segments. These capabilities make the device relevant to vehicle gateways, infotainment systems, advanced driver-assistance electronics, and other connected automotive ECUs. According to the NXP datasheet, each of the five ports can be individually configured to operate in MII, RMII, and RGMII modes. This interface flexibility lets an automotive system connect different external controllers and PHY devices without forcing one fixed electrical interface across every port. The part is also associated with the TJA1100 BroadR-Reach PHY as a compatible NXP device named in the manufacturer documentation. The 159-LFBGA package is intended for compact automotive electronics assemblies and is supplied in tape-and-reel form according to the verified distributor description. Automotive ECU designers should treat the package, ball map, exposed-pad requirements, power delivery, clocking, and high-speed Ethernet layout as a coordinated design problem. The datasheet and PCB design guidance should be consulted for exact pin functions, electrical limits, decoupling, and routing because those details are not available in the supplied web excerpts. A practical design consideration is to preserve the required high-speed differential routing and provide continuous return paths beneath Ethernet pairs. Although the device supports several interface modes, the correct configuration depends on the connected MCU, switch, or PHY. NXP’s product page and SJA1105 datasheet are the authoritative starting points for firmware, electrical characteristics, and implementation requirements. This product summary combines verified NXP and distributor information, including switching throughput, supported data rates, package, automotive qualification, and available commercial listings. It is intended to accelerate initial part selection while directing engineers to the manufacturer documentation for complete design validation and PCB implementation.

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SIT9002AI-432N33EQ200.00000Z - 200 MHz HCSL Spread-Spectrum XO | 6-SMD

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