My Inquiry
My Account
Skyworks Solutions Inc. SI86S642EB-IUR
- Part No.:
- SI86S642EB-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642EB-IUR.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:3,822
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86S642EB-IUR from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It supports DC to 150 Mbps data rates, delivers 10 ns typical propagation delay, and provides 6000 VRMS isolation rating per UL 1577. Designed for automotive and industrial systems requiring high CMTI (>100 kV/µs) and AEC-Q100 qualification, it operates from 2.25–5.5 V on both sides and features selectable fail-safe output (default low).
For engineers reviewing the SI86S642EB-IUR datasheet, SI86S642EB-IUR pinout, SI86S642EB-IUR application, or SI86S642EB-IUR equivalent, key selection criteria include its 4-channel configuration with two forward and two reverse channels, WB SOIC-16 package with 8.3 mm creepage, IEC 60747-17 reinforced insulation, and support for isolated SPI peripheral interfaces in battery management and motor control systems.
Technical Context
The SI86S642EB-IUR implements RF-based on/off keying modulation across a monolithic silicon dioxide isolation barrier, eliminating startup initialization and enabling deterministic timing behavior. Its architecture includes Schmitt-trigger inputs with 0.15×VDD hysteresis and CMOS-compatible thresholds for robust noise immunity in noisy environments.
It integrates independent undervoltage lockout (UVLO) monitors on both sides (VDDUV+ = 2.10–2.25 V), reset detection at ~1.7 V, and tri-state output enable (EN1/EN2) for system-level power sequencing. The device supports fail-safe operation with default-low output state during unpowered conditions on the input side while VDD2 remains active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI interfaces without protocol translation. |
| Propagation delay | 10 ns typical - enables tight timing budgets in real-time control loops such as traction inverter gate drivers. |
| Isolation rating | 6000 VRMS (1 min, UL 1577) - meets reinforced insulation requirements for 1000 VAC working voltage systems per IEC 62368-1 and IEC 60601-1. |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dV/dt environments like motor drives and SMPS with fast-switching SiC/GaN FETs. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive applications and industrial ambient conditions. |
| Fail-safe mode | Default low output - maintains safe logic state during VDD1 loss while VDD2 remains powered, critical for BMS fault signaling. |
Pinout & Package
SI86S642EB-IUR is housed in a wide-body SOIC-16 (WB SOIC-16) package with 10.3 mm body width, 8.3 mm creepage, and reinforced insulation barrier. Pin numbering follows standard SOIC layout with Side A (VDD1/GND1) on pins 1–8 and Side B (VDD2/GND2) on pins 9–16.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | 2.25–5.5 V power for input-side logic and transmitter circuits; requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A4 | Side A I/O | Four digital input/output channels on primary side; configurable as forward or reverse direction depending on EN1/EN2 states. |
| EN1 | Side A enable | Active-high output enable controlling all A-side outputs; drives them into high-impedance when low. |
| GND1 | Side A ground | Reference return for VDD1 and A-side signals; must be separated from GND2 by PCB isolation gap. |
| VDD2 | Side B supply | 2.25–5.5 V power for isolated-side logic and receiver circuits; independent of VDD1 for dual-supply operation. |
| B1–B4 | Side B I/O | Four isolated digital I/O channels; electrically decoupled from A-side with >6000 VRMS withstand capability. |
| EN2 | Side B enable | Active-high output enable controlling all B-side outputs; supports independent tri-state control per side. |
| GND2 | Side B ground | Reference return for VDD2 and B-side signals; forms safety barrier with GND1; must meet creepage/clearance rules. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates optical degradation and startup delays; enables immediate operation after power-on without handshake or calibration. |
| Reinforced IEC 60747-17 rating | Validated for functional safety-critical applications including ISO 26262 ASIL-B systems in automotive BMS and OBC. |
| Schmitt-trigger + CMOS threshold inputs | Provides 0.15×VDD hysteresis and noise margin >700 mV at 3.3 V, rejecting EFT bursts and conducted transients up to 4 kV. |
| Tri-state outputs with independent enables | EN1/EN2 allow dynamic bus sharing and hot-swap compatibility in multi-master isolated communication backplanes. |
| Input deglitch filter (36 ns) | Rejects sub-36 ns noise pulses common in motor drive gate driver feedback paths, preventing false triggering in protection circuits. |
Applications
| Battery Management System (BMS) | Industrial Motor Drive |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring ADCs and pack-level MCU in high-voltage EV battery stacks (up to 900 V). IC Role / Device Role / Timing Role: Provides galvanic isolation between 12–16S analog front-end and microcontroller, transmitting sampled data at ≤1 MSPS with <10 ns jitter. Use Value: Enables accurate SOC estimation under high dV/dt conditions while meeting reinforced insulation requirements for ASIL-D functional safety compliance. |
Use Scenario: Isolating PWM signals and fault feedback between gate driver ICs and MCU in 3-phase inverter stages. IC Role / Device Role / Timing Role: Transmits dead-time-controlled gate drive commands and desaturation fault signals across isolation barrier with <10 ns skew between channels. Use Value: Prevents shoot-through failures during fast SiC switching (dv/dt > 50 V/ns) while maintaining precise channel-to-channel timing alignment. |
| Onboard Charger (OBC) | Isolated ADC Interface |
|
Use Scenario: Signal isolation between AC/DC PFC controller and DC/DC LLC controller in bi-directional OBC topologies. IC Role / Device Role / Timing Role: Carries phase-shifted PWM synchronization signals and current sense alerts across 1000 VAC working voltage barrier. Use Value: Supports seamless transition between grid-to-vehicle and vehicle-to-grid modes without compromising isolation integrity or timing fidelity. |
Use Scenario: Interfacing isolated sigma-delta ADCs (e.g., AMC1306) to host processor in high-precision current/voltage sensing. IC Role / Device Role / Timing Role: Transfers oversampled bitstream data at 20+ MHz with deterministic latency for real-time digital filtering. Use Value: Maintains SNR >85 dB in 16-bit measurement systems by eliminating ground loop noise and common-mode interference. |
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, 2.5 kVRMS isolation, SOIC-16 NB package (3.9 mm creepage) | Limited to industrial temp range (–40 to 105 °C); no AEC-Q100 qualification or 6 kVRMS rating | Preferred for cost-sensitive non-automotive designs where 2.5 kVRMS suffices and board space constraints favor narrow-body SOIC. |
| ISO6741FDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16 WB package, lower CMTI (85 kV/µs) | Not AEC-Q100 qualified; lacks fail-safe default-low option and input deglitch filter | Suitable for legacy industrial PLC I/O modules where lower data rate and reduced noise immunity are acceptable. |
Compared with ADUM4402BRWZ and ISO6741FDWR, SI86S642EB-IUR delivers higher isolation voltage (6 vs. 2.5/5 kVRMS), automotive qualification, and deterministic fail-safe behavior-making it the only choice for ASIL-B OBC and traction inverter subsystems requiring reinforced insulation and guaranteed safe-state operation.
Availability
SI86S642EB-IUR is available at Aetrix Electronics and suitable for battery management systems, onboard chargers, and industrial motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for automotive-grade production.
Supply support for SI86S642EB-IUR 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 automotive, industrial, and communications markets.
The SI86S6xx family was developed to replace optocouplers in high-reliability systems, delivering superior speed, timing precision, and safety certification for next-generation EV power electronics and Industry 4.0 automation infrastructure.
FAQ
What is the isolation voltage rating of SI86S642EB-IUR and which safety standards does it meet?
SI86S642EB-IUR is rated for 6000 VRMS isolation per UL 1577 (1 minute) and carries reinforced insulation certification per IEC 60747-17. It also meets CSA 62368-1 and 60601-1, VDE 60747-17, and CQC GB4943.1. These approvals validate its use in medical equipment, EV battery systems, and industrial inverters requiring double insulation barriers.
Does SI86S642EB-IUR support fail-safe operation, and how is it configured?
Yes, SI86S642EB-IUR includes a factory-configured fail-safe mode that defaults outputs to logic low when VDD1 is unpowered but VDD2 remains active. This behavior is fixed per ordering code (the "E" suffix denotes default-low). No external configuration is required-the device asserts safe state automatically during input-side brownout or power loss events.
What package type and creepage distance does SI86S642EB-IUR use?
SI86S642EB-IUR uses a wide-body SOIC-16 (WB SOIC-16) package with 10.3 mm body width and 8.3 mm creepage distance across the internal isolation barrier. This meets reinforced insulation requirements for 1000 VAC working voltage applications and exceeds IPC-2221B minimum spacing guidelines for pollution degree 2 environments.
Can SI86S642EB-IUR be used in SPI isolation applications, and what channel configuration supports this?
SI86S642EB-IUR supports isolated SPI interfaces using its four independent bidirectional channels: two forward (A→B) and two reverse (B→A). When paired with appropriate external logic, it isolates MOSI/MISO/SCLK/CS signals. For dedicated SPI isolation, Skyworks' SI86SS41/51 are optimized alternatives-but SI86S642EB-IUR remains viable for custom implementations requiring flexible channel assignment.
What is the maximum data rate and propagation delay specification for SI86S642EB-IUR?
SI86S642EB-IUR supports DC to 150 Mbps data rates with 10 ns typical propagation delay and ≤3.5 ns pulse width distortion. These values are guaranteed over full temperature (–40 to +125 °C) and supply (2.25–5.5 V) ranges, enabling use in high-speed digital interfaces such as isolated CAN FD transceivers and real-time encoder feedback links.
SI86S642EB-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (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:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 14ns, 14ns
- 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-QSOP
SI86S642EB-IUR FAQ
1.How can I place an order for SI86S642EB-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642EB-IUR 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 SI86S642EB-IUR reliable?
The price and inventory of SI86S642EB-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642EB-IUR is usually 5 days.
3.What payment methods are accepted for SI86S642EB-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642EB-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642EB-IUR?
SI86S642EB-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642EB-IUR 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 SI86S642EB-IUR?
For technical support, including SI86S642EB-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642EB-IUR requirements.
6.How does Aetrix verify that SI86S642EB-IUR is sourced from the original manufacturer or authorized distributors?
All SI86S642EB-IUR 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 SI86S642EB-IUR meets industry standards.
7.What is the process for return or replacement of SI86S642EB-IUR?
All SI86S642EB-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642EB-IUR, 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 SI86S642EB-IUR part is unused and in its original packaging.
Return procedure for SI86S642EB-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642EB-IUR 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…
