My Inquiry
My Account
Skyworks Solutions Inc. SI86S641BC-IS1R
- Part No.:
- SI86S641BC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S641BC-IS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:1,111
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86S641BC-IS1R from Skyworks Solutions is a 4-channel, reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It supports up to 150 Mbps data rate, features 10 ns typical propagation delay, 6000 VRMS isolation rating, and operates from 2.25–5.5 V on both sides. It is used in isolated ADC/DAC interfaces and motor control gate drivers where high CMTI and fail-safe output behavior are required.
For engineers reviewing the SI86S641BC-IS1R datasheet, SI86S641BC-IS1R pinout, SI86S641BC-IS1R application, or SI86S641BC-IS1R equivalent, key selection criteria include reinforced IEC 60747-17 certification, selectable default-high/low fail-safe mode, Schmitt-trigger + CMOS input thresholds, and compatibility with industrial and automotive power conversion systems requiring AEC-Q100 qualification.
Technical Context
The SI86S641BC-IS1R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity. Its architecture delivers 100 kV/µs transient immunity and supports independent undervoltage lockout (UVLO) and reset monitoring on both sides (VDD1/VDD2), with RSTB– threshold at ~1.7 V.
It integrates tri-state outputs controlled by EN1/EN2 pins, supports input deglitch filtering (36 ns), and provides precise timing with 3.5 ns pulse width distortion. The device uses HF XMTR/RCVR circuitry per channel and includes internal 100 kΩ weak pulldowns during unpowered states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI buses |
| Isolation rating | 6000 VRMS - enables use in reinforced insulation applications per IEC 60747-17 and UL 1577 |
| Propagation delay | 10 ns typical - ensures tight timing alignment in feedback loops and gate drive circuits |
| Pulse width distortion | 3.5 ns typical - preserves duty cycle integrity for PWM and clock distribution |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient environments |
| CMTI | 100 kV/µs min - prevents false triggering in high dv/dt motor inverter and SMPS environments |
Pinout & Package
The SI86S641BC-IS1R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation with reinforced insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias and ground reference for input-side channels and EN1 control |
| A1–A4 | Digital I/O (Side A) | Four isolated input signals referenced to Side A logic domain |
| EN1 | Active-high enable | Tri-states all Side A outputs when low; no effect on isolation barrier operation |
| VDD2, GND2 | Side B power supply | Provides bias and ground reference for output-side channels and EN2 control |
| B1–B4 | Digital I/O (Side B) | Four isolated output signals referenced to Side B logic domain |
| EN2 | Active-high enable | Tri-states all Side B outputs when low; maintains isolation integrity during disable |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF carrier modulation eliminates boot sequence - output follows input immediately after UVLO exit |
| Selectable fail-safe mode | Ordering option sets default output state (high or low) during VDD1 unpowered condition while VDD2 remains active |
| Schmitt trigger + CMOS thresholds | Combines noise margin (Schmitt) with low-power compatibility (CMOS) for reliable operation in noisy industrial environments |
| Tri-state outputs with enable | EN1/EN2 pins provide synchronous, side-specific output disable - essential for bus arbitration and shared-line isolation |
| Input deglitch filter | 36 ns filter removes sub-pulse noise without affecting valid signal edges - critical for clean sampling in isolated ADC interfaces |
Applications
| Isolated ADC Interface | Motor Gate Driver Isolation |
|---|---|
Use Scenario: Isolating analog-to-digital converter serial interface (e.g., SPI) between MCU and high-voltage sensor front-end in battery management systems. IC Role / Device Role / Timing Role: Digital isolator providing galvanic separation for SCLK, MOSI, MISO, and CSb lines while preserving timing integrity. Use Value: Enables 150 Mbps SPI communication across 6000 VRMS barrier with 10 ns propagation delay, ensuring synchronized sampling and fault-free data capture. | Use Scenario: Isolating PWM signals from controller to IGBT/SiC gate drivers in traction inverters and industrial VFDs. IC Role / Device Role / Timing Role: Bidirectional isolator delivering precise, low-skew PWM edge transmission with 3.5 ns pulse width distortion control. Use Value: Maintains gate timing accuracy under 100 kV/µs dv/dt transients, preventing shoot-through and improving inverter efficiency and reliability. |
| Onboard Charger Control | Isolated Power Supply Feedback |
Use Scenario: Signal isolation between primary-side controller and secondary-side monitoring in EV onboard chargers with dual 400 V/800 V architectures. IC Role / Device Role / Timing Role: Reinforced isolator handling isolated enable, fault reporting, and status signals across safety-critical boundaries. Use Value: AEC-Q100 qualification and IEC 60747-17 certification ensure compliance with automotive functional safety requirements for OBC control loops. | Use Scenario: Isolating voltage/current feedback signals from secondary-side sensing circuitry to primary-side PWM controller in isolated DC-DC converters. IC Role / Device Role / Timing Role: High-CMTI isolator transmitting analog-derived digital error signals with minimal latency and jitter. Use Value: 100 kV/µs common-mode transient immunity prevents false regulation errors during load transients, improving output stability and dynamic response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 150 Mbps, 3750 VRMS, 2.5–5.5 V supply, no deglitch filter | Lacks reinforced 6000 VRMS rating and AEC-Q100 qualification; suitable for non-automotive industrial use only | Choose when lower isolation voltage suffices and automotive qualification is not required |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, 1.71–5.5 V, integrated LDO on side B | Lower speed and isolation rating; includes LDO but lacks selectable fail-safe mode and deglitch filtering | Choose when integrated side-B regulation is prioritized over speed and fail-safe configurability |
Compared with ADUM140D0BRIZ and ISO6741FDWR, the SI86S641BC-IS1R offers higher isolation voltage (6000 VRMS), AEC-Q100 qualification, programmable fail-safe output, and 36 ns input deglitching-making it uniquely suited for automotive traction inverters and high-reliability industrial power systems where safety certification and noise resilience are mandatory.
Availability
SI86S641BC-IS1R is available at Aetrix Electronics and suitable for industrial automation systems, battery management systems, and isolated switch mode supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI86S641BC-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 provider of analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for high-performance wireless and power systems.
The Si86S6xx family is designed for high-reliability galvanic isolation in automotive and industrial power conversion, emphasizing reinforced safety certification, ultra-low propagation delay, and robust electromagnetic immunity.
FAQ
What is the isolation voltage rating of the SI86S641BC-IS1R and which safety standards does it meet?
The SI86S641BC-IS1R is rated for 6000 VRMS isolation per UL 1577 and carries reinforced insulation certification per IEC 60747-17. It also meets CSA 62368-1 and 60601-1, and CQC GB4943.1 requirements. These approvals are validated for the WB SOIC-16 package variant and apply directly to the SI86S641BC-IS1R part number as shipped.
Does the SI86S641BC-IS1R support fail-safe output configuration, and how is it implemented?
Yes, the SI86S641BC-IS1R offers a selectable fail-safe mode via ordering option: default-high or default-low output state when VDD1 is unpowered but VDD2 remains active. This behavior is implemented in silicon and documented in Table 4 of the datasheet. The SI86S641BC-IS1R specifically implements the default-low variant, ensuring predictable shutdown behavior in power-loss scenarios.
What is the purpose of the EN1 and EN2 pins on the SI86S641BC-IS1R?
The EN1 and EN2 pins are active-high enable inputs that place all outputs on their respective sides (Side A or Side B) into high-impedance (tri-state) mode when driven low. They do not affect the isolation barrier or internal RF operation. For the SI86S641BC-IS1R, EN1 controls A1–A4 outputs and EN2 controls B1–B4 outputs-enabling bus sharing and hot-swap compatibility in multi-device systems.
Can the SI86S641BC-IS1R be used in automotive applications, and what qualifications does it hold?
Yes, the SI86S641BC-IS1R is AEC-Q100 qualified for Grade 1 (–40 to 125 °C) operation and manufactured using automotive-specific process flows. It supports AIAG-compliant PPAP documentation and IMDS/CAMDS listings. These qualifications are explicitly assigned to the SI86S641BC-IS1R part number and cover its full parametric performance envelope per the datasheet.
What is the input deglitch filter specification for the SI86S641BC-IS1R?
The SI86S641BC-IS1R includes a factory-configured 36 ns input deglitch filter on all four channels, as confirmed in Section 3.4.5 of the datasheet. This filter rejects noise pulses shorter than 36 ns while adding only that fixed delay to valid transitions-ensuring clean signal transmission in electrically noisy motor control and power supply environments.
SI86S641BC-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:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- 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-SOIC
SI86S641BC-IS1R FAQ
1.How can I place an order for SI86S641BC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641BC-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 SI86S641BC-IS1R reliable?
The price and inventory of SI86S641BC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641BC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86S641BC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641BC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641BC-IS1R?
SI86S641BC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641BC-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 SI86S641BC-IS1R?
For technical support, including SI86S641BC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641BC-IS1R requirements.
6.How does Aetrix verify that SI86S641BC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86S641BC-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 SI86S641BC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86S641BC-IS1R?
All SI86S641BC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641BC-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 SI86S641BC-IS1R part is unused and in its original packaging.
Return procedure for SI86S641BC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641BC-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…
