My Inquiry
My Account
Skyworks Solutions Inc. SI86S641HC-IS1
- Part No.:
- SI86S641HC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S641HC-IS1.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:3,572
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86S641HC-IS1 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, features 10 ns typical propagation delay, 3.5 ns pulse width distortion, and operates from 2.25 V to 5.5 V on both sides. Designed for isolated ADC/DAC interfaces and motor control systems requiring 6000 VRMS reinforced insulation per UL 1577.
For engineers reviewing the SI86S641HC-IS1 datasheet, SI86S641HC-IS1 pinout, SI86S641HC-IS1 application, or SI86S641HC-IS1 equivalent, key selection criteria include its AEC-Q100 qualification, fail-safe default-high output option, 100 kV/µs CMTI, and WB SOIC-16 package with 8.3 mm creepage/clearance - critical for automotive battery management and industrial inverters.
Technical Context
The SI86S641HC-IS1 implements RF-based on/off keying modulation across a monolithic silicon dioxide isolation barrier, eliminating startup initialization and enabling deterministic timing without clock recovery circuits. Its architecture delivers precise edge alignment between channels with <3.5 ns inter-channel skew and supports independent side-A/side-B undervoltage lockout (UVLO) with RSTB reset thresholds at ~1.7 V.
It integrates Schmitt-trigger + CMOS-threshold inputs for noise immunity, tri-state outputs controlled by EN1/EN2 pins, and selectable fail-safe mode (default high) defined at ordering. The device includes input deglitch filtering with 36 ns rejection window and supports simultaneous forward/reverse channel operation without direction control pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - enables high-speed SPI, isolated sensor interfaces, and real-time control loops without protocol translation. |
| Propagation delay | 10 ns typical - ensures sub-100 ns round-trip latency for closed-loop motor control and fast ADC sampling synchronization. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements for 1000 VAC working voltage in onboard chargers and traction inverters. |
| Supply range | 2.25 V to 5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| CMTI | ≥100 kV/µs - prevents data corruption in high-dV/dt environments like IGBT gate drivers and power converter switching nodes. |
| Operating temperature | –40 °C to +125 °C - supports under-hood automotive use and industrial ambient conditions without derating. |
| Fail-safe mode | Default high output - maintains safe logic state during VDD1 loss in isolated feedback paths for SMPS controllers. |
Pinout & Package
SI86S641HC-IS1 is housed in a wide-body SOIC-16 (WB SOIC-16) package with 10.3 mm body width, 8.3 mm creepage/clearance, and reinforced insulation per IEC 60747-17. Pinout conforms to Figure 2 (Si86S64x/L4x) in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides isolated 2.25–5.5 V bias for input-side logic; requires 0.1 µF + 10 µF local bypassing. |
| A1–A4 | Side A digital I/O | Four unidirectional input channels accepting CMOS/Schmitt-trigger logic; support 36 ns deglitch filtering. |
| EN1 | Side A output enable | Active-high control: drives all B1–B4 outputs into high-impedance when low - enables bus sharing and power sequencing. |
| Isolation Barrier | Dielectric separation | Silicon dioxide barrier rated for 6000 VRMS withstand; defines safety-critical creepage path between pins 1–8 and 9–16. |
| B1–B4 | Side B digital I/O | Four unidirectional output channels; default-high fail-safe behavior active when VDD1 is unpowered but VDD2 is valid. |
| EN2, VDD2, GND2 | Side B power & control | Independent 2.25–5.5 V supply domain; EN2 enables/disables A1–A4 outputs - supports dual-sided control. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift of optocouplers; enables stable 150 Mbps operation over full –40 to +125 °C range. |
| Reinforced certification | UL 1577 (6000 VRMS), VDE 60747-17, CSA 62368-1, CQC GB4943.1 - permits single-component isolation in medical and EV systems without external reinforcement. |
| Tri-state output control | EN1/EN2 pins allow dynamic bus contention avoidance in multi-master isolated networks without external switches. |
| Input deglitch filter | 36 ns pulse rejection window - suppresses EFT bursts and switching noise in industrial PLC I/O modules without firmware overhead. |
| AEC-Q100 Grade 1 | Qualified for automotive applications including battery management systems and onboard chargers with zero defect requirements. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks for HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Bidirectional digital isolator providing timing-aligned PWM and fault reporting across 600 VDC bus with <10 ns skew. Use Value: Enables IGBT/SiC FET switching at >20 kHz while maintaining functional safety via reinforced 6000 VRMS barrier and 100 kV/µs CMTI. |
Use Scenario: Isolating cell voltage monitoring and pack contactor control signals between MCU and high-voltage battery stack in BEVs. IC Role / Device Role / Timing Role: 4-channel isolator conveying ADC data and relay commands across 500–800 VDC isolation boundary with fail-safe default-high outputs. Use Value: Meets ASIL-B requirements through AEC-Q100 qualification, reinforced insulation, and deterministic 10 ns propagation delay for thermal runaway response. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
|
Use Scenario: Providing feedback path for secondary-side voltage regulation and primary-side synchronous rectifier control in 1–3 kW telecom PSUs. IC Role / Device Role / Timing Role: Dual-supply isolator linking TL431 shunt regulator output to PWM controller across 3 kVRMS barrier with UVLO monitoring on both sides. Use Value: Replaces optocoupler+TL431 combinations with 150 Mbps bandwidth, eliminating gain drift and enabling adaptive dead-time control. |
Use Scenario: Isolating EEG/ECG analog front-end digitization paths from patient-connected electrodes to host processor in diagnostic equipment. IC Role / Device Role / Timing Role: Reinforced isolator transmitting SPI-configured ADC results and calibration commands across 6000 VRMS barrier compliant with IEC 60601-1. Use Value: Achieves 6000 VRMS reinforced rating and 125 °C operation required for sterilizable medical enclosures without external creepage extenders. |
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, 2.5 kVRMS isolation, SOIC-16 NB package, no AEC-Q100 qualification | Limited to industrial automation; lacks reinforced certification for automotive or medical use | Choose for cost-sensitive non-safety-critical industrial controls where 2.5 kVRMS suffices |
| ISO6741FDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16 WB, no deglitch filter, no default-high fail-safe option | Suitable for lower-speed isolated communication but not high-CMTI motor control or BMS | Prefer when budget constraints outweigh need for 150 Mbps or fail-safe defaults |
Compared with ADUM140D0BRIZ and ISO6741FDWR, SI86S641HC-IS1 provides higher isolation rating (6000 VRMS vs. 2.5/5 kVRMS), AEC-Q100 qualification, and configurable fail-safe output - making it uniquely suitable for automotive traction inverters and medical diagnostics where safety certification and deterministic power-loss behavior are mandatory.
Availability
SI86S641HC-IS1 is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86S641HC-IS1 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 high-reliability applications.
The Si86S6xx family was engineered specifically for high-speed, reinforced digital isolation in automotive electrification and industrial automation - delivering RF-based timing precision, AEC-Q100 compliance, and 6000 VRMS safety certification in standard SOIC packages.
FAQ
What is the isolation voltage rating of SI86S641HC-IS1 and which safety standards does it meet?
SI86S641HC-IS1 is rated for 6000 VRMS isolation for 1 minute per UL 1577 and carries reinforced insulation certification per VDE 60747-17, CSA 62368-1, and CQC GB4943.1. This enables single-component isolation in systems requiring up to 1000 VAC working voltage, such as EV onboard chargers and medical imaging power supplies. The rating is validated across the full temperature range and applies to the WB SOIC-16 package's 8.3 mm creepage path.
Does SI86S641HC-IS1 support fail-safe operation, and how is it configured?
Yes, SI86S641HC-IS1 supports selectable fail-safe mode - the SI86S641HC-IS1 variant is ordered with default-high output behavior. When VDD1 is unpowered but VDD2 remains active, all B1–B4 outputs drive high. This is implemented via internal configuration and requires no external components. The setting is fixed at manufacture and cannot be changed in-circuit.
What is the purpose of the EN1 and EN2 pins on SI86S641HC-IS1?
EN1 and EN2 are active-high output enable pins controlling opposite sides of the isolation barrier. EN1 places B1–B4 into high-impedance; EN2 places A1–A4 into high-impedance. This allows dynamic bus arbitration in multi-node isolated systems and supports power sequencing where one side powers up before the other. Both pins tolerate voltages up to VDDx + 0.5 V and require no pull-up resistors.
How does the input deglitch filter function in SI86S641HC-IS1?
The SI86S641HC-IS1 includes a factory-enabled 36 ns input deglitch filter on all A1–A4 channels. Any input pulse narrower than 36 ns is suppressed; wider pulses pass with 36 ns added delay. This rejects EFT bursts, switching noise, and contact bounce in industrial I/O without firmware intervention - confirmed in Table 9 and Section 3.4.5 of the datasheet.
Is SI86S641HC-IS1 qualified for automotive applications, and what does that entail?
Yes, SI86S641HC-IS1 is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C). This includes stress testing for HTOL, TC, UHAST, and ESD per automotive requirements, plus AIAG-compliant PPAP documentation and IMDS/CAMDS material declarations. It is approved for use in battery management systems, onboard chargers, and traction inverters where zero-defect reliability is mandated.
SI86S641HC-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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):
- 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
SI86S641HC-IS1 FAQ
1.How can I place an order for SI86S641HC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641HC-IS1 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 SI86S641HC-IS1 reliable?
The price and inventory of SI86S641HC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641HC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86S641HC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641HC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641HC-IS1?
SI86S641HC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641HC-IS1 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 SI86S641HC-IS1?
For technical support, including SI86S641HC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641HC-IS1 requirements.
6.How does Aetrix verify that SI86S641HC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86S641HC-IS1 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 SI86S641HC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86S641HC-IS1?
All SI86S641HC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641HC-IS1, 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 SI86S641HC-IS1 part is unused and in its original packaging.
Return procedure for SI86S641HC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641HC-IS1 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…
