My Inquiry
My Account
Skyworks Solutions Inc. SI86S642FC-IS1R
- Part No.:
- SI86S642FC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642FC-IS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,826
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86S642FC-IS1R 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 selectable fail-safe output (default high/low), tri-state outputs with enable, and Schmitt-trigger + CMOS inputs for industrial motor control and battery management systems.
For engineers reviewing the SI86S642FC-IS1R datasheet, SI86S642FC-IS1R pinout, SI86S642FC-IS1R application, or SI86S642FC-IS1R equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in automotive traction inverters and isolated ADC interfaces, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The SI86S642FC-IS1R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier-no optical components or start-up initialization required. Each channel integrates independent transmitter and receiver circuits with internal RF oscillator, demodulator, and output driver, enabling robust noise immunity and transient immunity ≥100 kV/µs.
It supports dual-supply operation (VDD1/VDD2) with independent UVLO and reset circuitry per side, plus fail-safe mode selection via ordering option. The device includes input deglitch filtering (36 ns), tri-state enable control (EN1/EN2), and operates across –40 °C to +125 °C with AEC-Q100 qualification for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - enables high-speed serial communication in motor gate drivers and isolated SPI interfaces without timing bottlenecks. |
| Propagation delay | 10 ns typical - ensures tight timing alignment between controller and power stage in real-time closed-loop systems. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577, IEC 60747-17, and CSA 62368-1 for safety-critical EV battery management. |
| Supply voltage | 2.25–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| Fail-safe mode | Selectable default-high or default-low output - prevents undefined states during power loss in isolated gate driver enable paths. |
| Transient immunity | ≥100 kV/µs - suppresses fast common-mode transients induced by IGBT switching in inverters and SMPS. |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive applications and industrial automation environments. |
Pinout & Package
SI86S642FC-IS1R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced insulation. Pin 1 is marked with a dot; pins 1–8 are Side A (input side), pins 9–16 are Side B (output side), separated by an internal semiconductor isolation barrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 | Supply | Independent 2.25–5.5 V power rails for isolated sides; each requires 0.1 µF + 10 µF bypass capacitors placed near the pin. |
| GND1, GND2 | Ground | Separate ground references for Side A and Side B; must not be connected externally to preserve isolation integrity. |
| A1–A4 | Digital I/O | Four unidirectional input channels on Side A; accept CMOS/Schmitt-trigger logic levels with 36 ns deglitch filtering. |
| B1–B4 | Digital I/O | Four unidirectional output channels on Side B; drive 50 Ω nominal impedance into controlled-impedance PCB traces. |
| EN1, EN2 | Digital input | Active-high enable pins controlling all outputs on respective sides; drive outputs to high-impedance when low. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift of optocouplers; enables stable 150 Mbps operation over full temperature range. |
| Reinforced IEC 60747-17 rating | Validated for end-equipment compliance in medical (60601-1) and industrial (62368-1) safety standards without external certification overhead. |
| Input deglitch filter (36 ns) | Rejects sub-36 ns noise pulses from noisy motor control environments while preserving signal integrity of valid edges. |
| Tri-state output enable (EN1/EN2) | Allows single-pin control of all four outputs per side-critical for bus arbitration in isolated communication backplanes. |
| AEC-Q100 Grade 1 qualification | Guarantees reliability for automotive onboard chargers and traction inverters operating at 125 °C junction temperature. |
Applications
| Industrial Motor Control | Isolated ADC Interface |
|---|---|
|
Use Scenario: Gate driver signal isolation in 3-phase inverter stacks for HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Transmits PWM enable/disable and fault feedback signals across 6000 VRMS barrier with ≤10 ns skew between channels. Use Value: Prevents ground loop-induced shoot-through and enables precise timing synchronization between MCU and IGBT modules. |
Use Scenario: Isolating serial interface between precision SAR ADC (e.g., AD7606) and host processor in high-voltage energy metering. IC Role / Device Role / Timing Role: Carries 16-bit conversion data and frame sync at 1 MSPS with deterministic 10 ns propagation delay. Use Value: Maintains ADC effective resolution by eliminating noise coupling through shared ground paths in Class 0.2 meters. |
| Automotive Onboard Charger | Battery Management System |
|
Use Scenario: Isolating digital control signals between AC/DC PFC controller and DC/DC LLC controller in OBC modules. IC Role / Device Role / Timing Role: Transfers interleaved gate timing and current sense alerts with fail-safe default-low output during brownout. Use Value: Ensures safe shutdown of power stages during primary-side supply collapse, meeting ISO 26262 ASIL-B requirements. |
Use Scenario: Isolating cell voltage monitoring IC (e.g., LTC6813) communication bus from main MCU in 400 V BEV battery packs. IC Role / Device Role / Timing Role: Relays daisy-chained SPI commands and responses across 6000 VRMS barrier with 150 Mbps capability. Use Value: Enables real-time cell balancing decisions without compromising isolation integrity or introducing timing jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4402BRWZ | 4-channel, 100 Mbps, 5000 VRMS, SOIC-16, no deglitch filter, non-AEC-Q100 | Limited to industrial temp (–40 °C to +105 °C); lacks 36 ns input filtering and automotive qualification | Choose for cost-sensitive industrial PLCs where 150 Mbps and AEC-Q100 are unnecessary. |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, SOIC-16, integrated LDO, no fail-safe selection | Lower speed and isolation rating; includes 3.3 V LDO but no configurable default output state | Prefer when system-level LDO integration reduces BOM count and 150 Mbps is not required. |
Compared with ADUM4402BRWZ and ISO6741FDWR, SI86S642FC-IS1R delivers higher data rate, reinforced 6000 VRMS isolation, AEC-Q100 qualification, and selectable fail-safe mode-making it uniquely suited for automotive traction inverters and high-performance industrial servo drives requiring deterministic timing and safety certification.
Availability
SI86S642FC-IS1R is available at Aetrix Electronics and suitable for automotive onboard chargers, industrial motor control systems, and battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical designs.
Supply support for SI86S642FC-IS1R 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 leader in high-reliability analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for demanding communications and power systems.
The Si86S6xx family was designed specifically for high-speed, reinforced-isolation applications in automotive electrification and industrial automation-emphasizing low propagation delay, high CMTI, and safety certification readiness.
FAQ
What is the isolation voltage rating of SI86S642FC-IS1R?
SI86S642FC-IS1R provides 6000 VRMS isolation for 1 minute per UL 1577, certified to reinforced insulation standards IEC 60747-17, CSA 62368-1, and CQC GB4943.1. This rating applies to the WB SOIC-16 package and enables use in 400 V–800 V battery systems and industrial 690 VAC drives where reinforced barrier integrity is mandatory.
Does SI86S642FC-IS1R support fail-safe output configuration?
Yes, SI86S642FC-IS1R offers factory-selectable fail-safe mode: default-high or default-low output during input-side power loss. This behavior is defined at order time and cannot be changed in-circuit. The IS1R suffix indicates the default-low variant, ensuring outputs remain logic low when VDD1 is unpowered but VDD2 is active.
What is the purpose of the EN1 and EN2 pins on SI86S642FC-IS1R?
EN1 and EN2 are active-high enable inputs that place all four outputs on Side A or Side B, respectively, into high-impedance (tri-state) mode. When pulled low, they disable output drivers without affecting internal isolation functionality-enabling bus sharing and hot-swap compatibility in multi-master isolated communication systems.
Can SI86S642FC-IS1R be used in automotive applications?
Yes, SI86S642FC-IS1R 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 reinforced isolation and functional safety alignment.
What bypass capacitors are required for SI86S642FC-IS1R?
SI86S642FC-IS1R requires two bypass capacitors per supply rail: a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor placed as close as possible to VDD1–GND1 and VDD2–GND2. This dual-capacitor network suppresses high-frequency switching noise and stabilizes supply during fast edge transitions up to 150 Mbps.
SI86S642FC-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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:
- 3750Vrms
- 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
SI86S642FC-IS1R FAQ
1.How can I place an order for SI86S642FC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642FC-IS1R 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 SI86S642FC-IS1R reliable?
The price and inventory of SI86S642FC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642FC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86S642FC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642FC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642FC-IS1R?
SI86S642FC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642FC-IS1R 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 SI86S642FC-IS1R?
For technical support, including SI86S642FC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642FC-IS1R requirements.
6.How does Aetrix verify that SI86S642FC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86S642FC-IS1R 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 SI86S642FC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86S642FC-IS1R?
All SI86S642FC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642FC-IS1R, 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 SI86S642FC-IS1R part is unused and in its original packaging.
Return procedure for SI86S642FC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642FC-IS1R 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…
