My Inquiry
My Account
Skyworks Solutions Inc. SI86S642FE-IS2R
- Part No.:
- SI86S642FE-IS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S642FE-IS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,954
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86S642FE-IS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an RF-based semiconductor barrier, supporting up to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating. It operates from 2.25–5.5 V on both sides and features Schmitt-trigger inputs, tri-state outputs with enable, and fail-safe default-high output mode - used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86S642FE-IS2R datasheet, SI86S642FE-IS2R pinout, SI86S642FE-IS2R application, or SI86S642FE-IS2R equivalent, key selection criteria include its 6000 VRMS reinforced insulation (IEC 60747-17), AEC-Q100 qualification for automotive use, 36 ns input deglitch filter option, and WB SOIC-16 package with 8.3 mm creepage/clearance.
Technical Context
The SI86S642FE-IS2R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing behavior. Its architecture supports independent undervoltage lockout (UVLO) and reset circuitry per side (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It integrates four isolated bidirectional channels with configurable direction control via external EN1/EN2 pins, tri-state output capability, and selectable fail-safe output state (default high). The device includes 36 ns input noise filters to reject sub-pulse transients, and supports sleep mode via external SMb pin in compatible variants - though SI86S642FE-IS2R does not include SMb functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - enables high-speed SPI, CAN FD, and isolated ADC interface timing without protocol translation. |
| Isolation Rating | 6000 VRMS (1 min) - meets reinforced insulation requirements for industrial and automotive high-voltage systems per UL 1577 and IEC 60747-17. |
| Propagation Delay | 10 ns typical - ensures tight timing alignment between isolated control and feedback paths in motor gate drivers. |
| Supply Voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Input Filter | 36 ns deglitch time - suppresses EFT/burst noise below 27.8 MHz, preventing false triggering in noisy motor drive environments. |
| Temperature Range | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
| CMTI | 100 kV/µs minimum - maintains signal integrity during fast-switching events in SiC/GaN inverter gate drive circuits. |
Pinout & Package
SI86S642FE-IS2R uses a wide-body SOIC-16 (WB SOIC-16) package with 10.3 mm body width, 8.3 mm creepage/clearance, and reinforced insulation barrier spanning pins 1–8 (Side A) and 9–16 (Side B).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Supplies isolated logic side driving microcontroller GPIO or SPI controller; bypass requires 0.1 µF + 10 µF capacitors. |
| A1–A4 | Side A digital I/O | Bidirectional isolated data lines - configured as inputs or outputs depending on system-level direction control logic. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low, enabling bus sharing or power-down sequencing. |
| VDD2, GND2 | Side B power supply | Supplies isolated side connected to gate drivers or sensors; independent regulation required for safety compliance. |
| B1–B4 | Side B digital I/O | Corresponding isolated outputs/inputs mirroring A1–A4; maintains channel pairing across barrier for signal integrity. |
| EN2 | Side B output enable | Active-high control: places B-side outputs in tri-state, critical for preventing contention in multi-master isolated buses. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot-time delays and configuration registers - outputs become valid within 0.3 ms of VDD stabilization. |
| Reinforced IEC 60747-17 rating | Validated barrier withstand performance enables use in medical (60601-1) and industrial (62368-1) safety-critical applications without additional system-level isolation. |
| Selectable fail-safe mode (default high) | Guarantees known logic state on B-side outputs during A-side power loss - prevents undefined gate driver states in motor control fault conditions. |
| 36 ns input deglitch filter | Hardware-level pulse rejection removes sub-36 ns noise spikes from switching node coupling, reducing firmware-level debounce overhead. |
| AEC-Q100 Grade 1 qualification | Validated for automotive operation from –40 °C to +125 °C junction temperature with zero defects in HTOL and TC testing - suitable for OBC and BMS modules. |
Applications
| Motor Control Gate Driver Isolation | Automotive Battery Management System (BMS) |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and SiC MOSFET gate drivers in traction inverters. IC Role / Device Role / Timing Role: Bidirectional channel isolator providing timing-aligned control and status transfer across 6000 VRMS barrier with <10 ns skew. Use Value: Enables safe, high-frequency switching (>100 kHz) while meeting ISO 26262 ASIL-D functional safety requirements for fault detection latency. | Use Scenario: Isolating cell voltage monitoring and balancing command signals between primary MCU and secondary BMS slave controllers. IC Role / Device Role / Timing Role: 4-channel digital isolator transferring daisy-chained ADC readouts and balance-enable commands across reinforced barrier. Use Value: Supports 100+ cell monitoring chains with deterministic 150 Mbps throughput and immunity to pack-level EMI during charging/discharging. |
| Industrial Isolated ADC Interface | Onboard Charger (OBC) Communication |
Use Scenario: Interfacing isolated sigma-delta ADCs (e.g., AMC1306) to host processor in high-voltage DC-DC converters. IC Role / Device Role / Timing Role: High-CMTI isolator transmitting oversampled bitstream data with precise clock domain separation. Use Value: Maintains 16-bit effective resolution by rejecting >100 kV/µs common-mode transients induced by 1000 V bus switching. | Use Scenario: Isolating CAN FD communication and AC-DC control signals between OBC main controller and secondary rectifier stage. IC Role / Device Role / Timing Role: 4-channel isolator handling CAN FD TX/RX plus two control lines for soft-start and fault reporting. Use Value: Enables 5 Mbps CAN FD operation with guaranteed 6000 VRMS working voltage margin over full automotive lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4402BRIZ | 4-channel, 100 Mbps, 5000 VRMS, 2.7–5.5 V supply, no deglitch filter, non-AEC-Q100 | Limited to industrial temp range (–40 °C to +105 °C); lacks 36 ns hardware filter and automotive qualification | Use where cost sensitivity outweighs automotive qualification and EFT immunity requirements. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5000 VRMS, 2.25–5.5 V, 100 kV/µs CMTI, no deglitch filter, AEC-Q100 Grade 1 | Same temperature and qualification specs but lower isolation rating and no input filtering | Prefer when board space is constrained (SOIC-16 vs. WB SOIC-16) and 5000 VRMS suffices for system-level safety design. |
Compared with ADUM4402BRIZ and ISO7741FDWR, SI86S642FE-IS2R delivers higher isolation (6000 VRMS), integrated 36 ns deglitching, and identical AEC-Q100 Grade 1 qualification - making it optimal for automotive traction inverters and high-reliability industrial power supplies where transient immunity and safety margin are critical.
Availability
SI86S642FE-IS2R is available at Aetrix Electronics and suitable for automotive onboard chargers, industrial motor drives, and isolated power supply monitoring requiring stable component supply across extended product lifecycles.
Supply support for SI86S642FE-IS2R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The Si86S6xx family was designed to replace optocouplers in high-reliability, high-speed isolation applications - delivering superior timing precision, lower power, and reinforced safety certification for automotive and industrial systems.
FAQ
What is the isolation voltage rating of the SI86S642FE-IS2R and which safety standards does it meet?
The SI86S642FE-IS2R provides 6000 VRMS isolation for 1 minute per UL 1577 and is certified to IEC 60747-17 for reinforced insulation. It also meets CSA 62368-1 and 60601-1, and CQC GB4943.1 - enabling direct use in medical, industrial, and automotive safety-critical designs without additional system-level isolation components.
Does the SI86S642FE-IS2R support fail-safe operation, and how is it configured?
Yes, the SI86S642FE-IS2R is ordered with default-high fail-safe mode, meaning its B-side outputs go high when the A-side supply is unpowered but the B-side supply remains active. This behavior is factory-configured and does not require external pull-ups or configuration pins - ensuring predictable gate driver or sensor interface states during power faults.
What is the purpose of the 36 ns input deglitch filter in the SI86S642FE-IS2R?
The 36 ns input deglitch filter in the SI86S642FE-IS2R rejects noise pulses shorter than 36 ns, preventing false triggering from EFT bursts or switching node coupling. This hardware-level filtering reduces firmware debounce overhead and improves reliability in high-noise motor drive and inverter applications where sub-30 ns transients are common.
Can the SI86S642FE-IS2R be used in automotive applications, and what qualifications does it hold?
Yes, the SI86S642FE-IS2R is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation. It is deployed in automotive onboard chargers, battery management systems, and traction inverters requiring long-term reliability and zero-defect robustness.
What package type and creepage distance does the SI86S642FE-IS2R use?
The SI86S642FE-IS2R uses a wide-body SOIC-16 (WB SOIC-16) package with 8.3 mm creepage and clearance distances, supporting 6000 VRMS working voltage per UL 1577. Its 10.3 mm body width and reinforced molding compound ensure compliance with IPC-2221 and IEC 60664-1 spacing requirements for reinforced insulation.
SI86S642FE-IS2R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 42ns, 42ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86S642FE-IS2R FAQ
1.How can I place an order for SI86S642FE-IS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642FE-IS2R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI86S642FE-IS2R reliable?
The price and inventory of SI86S642FE-IS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642FE-IS2R is usually 5 days.
3.What payment methods are accepted for SI86S642FE-IS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642FE-IS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642FE-IS2R?
SI86S642FE-IS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642FE-IS2R order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI86S642FE-IS2R?
For technical support, including SI86S642FE-IS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642FE-IS2R requirements.
6.How does Aetrix verify that SI86S642FE-IS2R is sourced from the original manufacturer or authorized distributors?
All SI86S642FE-IS2R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI86S642FE-IS2R meets industry standards.
7.What is the process for return or replacement of SI86S642FE-IS2R?
All SI86S642FE-IS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642FE-IS2R, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI86S642FE-IS2R part is unused and in its original packaging.
Return procedure for SI86S642FE-IS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642FE-IS2R Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
