My Inquiry
My Account
Skyworks Solutions Inc. SI8642ET-AS2R
- Part No.:
- SI8642ET-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8642ET-AS2R.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:2,020
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8642ET-AS2R from Skyworks is a quad-channel, 2-input/2-output digital isolator with reinforced 5 kVRMS isolation, 150 Mbps data rate, <10 ns propagation delay, and selectable high-fail-safe output mode-designed for isolated gate drivers and battery management systems in EV traction inverters.
For engineers reviewing the SI8642ET-AS2R datasheet, SI8642ET-AS2R pinout, SI8642ET-AS2R application, or SI8642ET-AS2R equivalent, key selection criteria include its wide-body SOIC-16 package with 8 mm creepage, AEC-Q100 Grade 1 qualification, VDE 0884-10 reinforced certification, and dual enable inputs supporting independent channel control on both sides.
Technical Context
The SI8642ET-AS2R implements RF-based on/off keying across a silicon-dioxide isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture supports independent power domains (VDD1/VDD2) and Schmitt-trigger inputs for >50 kV/µs common-mode transient immunity.
It features two enable inputs (EN1 on Side A, EN2 on Side B), each controlling two outputs in tri-state mode-EN1 drives A3/A4, EN2 drives B1/B2-with fail-safe default-high behavior during input-side power loss, per ordering option "ET".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, CAN FD, and PWM feedback in motor control loops |
| Propagation delay | 5–13 ns (typ. 8 ns) - enables sub-100 ns timing-critical gate drive synchronization |
| Channel skew | ≤2.5 ns - ensures matched timing across isolated signal pairs in multi-phase inverters |
| Isolation rating | 5 kVRMS, reinforced per VDE 0884-10 - meets IEC 62368-1 and IEC 60601-1 for medical and industrial safety |
| Supply voltage | 2.5–5.5 V per side - interoperable with 3.3 V microcontrollers and 5 V gate drivers without level shifting |
| Fail-safe mode | Default-high output - maintains safe logic state during VDD1 loss in battery monitoring circuits |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive use per AEC-Q100 Grade 1 |
Pinout & Package
SI8642ET-AS2R uses a 16-pin wide-body SOIC package (–AS2 suffix denotes IS2 variant with tie-bar-free construction for 8 mm creepage). The package complies with JEDEC MS-013AC, RoHS, and 260 °C peak reflow standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | VDD1, GND1, IN1, IN2 | Side A power, ground, and two digital inputs feeding channels A1/A2 (isolated to B3/B4) |
| 5, 6, 7, 8 | EN1, A3, A4, GND1 | Enable for A3/A4 outputs; A3/A4 are Side A outputs (driven by B1/B2 inputs via isolation barrier) |
| 9, 10, 11, 12 | VDD2, GND2, B1, B2 | Side B power, ground, and two digital inputs feeding channels B1/B2 (isolated to A3/A4) |
| 13, 14, 15, 16 | EN2, B3, B4, GND2 | Enable for B3/B4 outputs; B3/B4 are Side B outputs (driven by A1/A2 inputs via isolation barrier) |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Silicon-dioxide dielectric enables 60-year life at rated working voltage and eliminates LED aging concerns of optocouplers |
| Dual independent enable inputs | EN1 controls A3/A4; EN2 controls B3/B4 - allows selective channel shutdown without affecting other isolated paths |
| High-fail-safe output mode | Outputs default to logic high when VDD1 is unpowered - critical for maintaining safe state in BMS fault detection |
| Ultra-low power at 100 Mbps | 11 mA per side at 5 V - reduces thermal load in densely packed inverter control boards |
| Reinforced VDE 0884-10 + 10 kV surge | Validated for 5 kVRMS working voltage and 10 kV surge - satisfies reinforced insulation requirements for EV drivetrain isolation |
Applications
| Motor Control Feedback Isolation | Battery Management System (BMS) Monitoring |
|---|---|
|
Use Scenario: Isolating current-sense amplifier outputs and PWM gate signals in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Quad-channel isolator providing bidirectional signal separation between MCU (Side A) and IGBT/SiC gate drivers (Side B). Use Value: 2.5 ns channel skew and <10 ns propagation delay ensure synchronized switching across phases, minimizing shoot-through risk. |
Use Scenario: Transmitting cell voltage and temperature readings from high-voltage battery packs to low-voltage monitoring MCU. IC Role / Device Role / Timing Role: Isolator with default-high fail-safe mode preserving alert logic state during pack-side power interruption. Use Value: 5 kVRMS reinforced isolation and AEC-Q100 Grade 1 rating meet ASIL-B functional safety requirements for EV battery monitoring. |
| On-Board Charger (OBC) Control | Traction Inverter Gate Drive |
|
Use Scenario: Isolating digital control signals between AC/DC and DC/DC stages in bi-directional OBCs. IC Role / Device Role / Timing Role: Dual-enable configuration (EN1/EN2) allows independent enable/disable of communication and protection signal paths. Use Value: 150 Mbps data rate supports fast status reporting and fault response in real-time OBC control loops. |
Use Scenario: Providing isolated gate drive signals to SiC MOSFET half-bridges in high-power traction inverters. IC Role / Device Role / Timing Role: High-CMTI (>60 kV/µs) isolator rejecting noise from fast-switching 1000 V bus transients. Use Value: VDE 0884-10 reinforced certification and 8 mm creepage meet ISO 26262 requirements for ASIL-D gate driver isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2402BRWZ | 2.5 kVRMS basic isolation; no VDE 0884-10 reinforcement; 25 Mbps max data rate | Not suitable for automotive traction inverters requiring 5 kV reinforced rating and 150 Mbps operation | Consider only for cost-sensitive industrial automation where lower isolation and speed suffice |
| ISO7742FDWR | 5 kVRMS reinforced (VDE 0884-10); 100 Mbps max; no dual-enable architecture; default-low only | Lacks independent EN1/EN2 control and high-fail-safe mode needed for BMS fault signaling | Acceptable for general-purpose 4-channel isolation but not for AEC-Q100-compliant EV subsystems with strict fail-safe logic |
Compared with ADUM2402BRWZ and ISO7742FDWR, SI8642ET-AS2R uniquely combines AEC-Q100 Grade 1, VDE-reinforced 5 kV isolation, 150 Mbps speed, dual-enable control, and programmable high-fail-safe output-making it the only drop-in solution for next-generation EV inverter and OBC designs demanding full ASIL compliance.
Availability
SI8642ET-AS2R is available at Aetrix Electronics and suitable for electric vehicle traction inverters, on-board chargers, and battery management systems requiring stable component supply across automotive production lifecycles.
Supply support for SI8642ET-AS2R 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.
The Si864x family was engineered specifically for high-reliability automotive and industrial isolation-delivering RF-based digital isolation with AEC-Q100 qualification, reinforced safety certifications, and ultra-low power consumption.
FAQ
What is the isolation rating and safety certification of SI8642ET-AS2R?
SI8642ET-AS2R provides 5 kVRMS reinforced isolation certified to VDE 0884-10, UL 1577, CSA 5A, and CQC GB4943.1. It meets IEC 62368-1 and IEC 60601-1 for reinforced insulation, with 10 kV surge capability-validated for automotive traction inverter applications requiring ASIL-D compliance.
Does SI8642ET-AS2R support fail-safe operation during power loss?
Yes, SI8642ET-AS2R is ordered with the "ET" suffix, indicating high-fail-safe mode: when VDD1 is unpowered, outputs A3/A4 default to logic high while VDD2 remains active. This behavior is factory-set and ensures safe state retention in battery monitoring and fault-signaling circuits.
What package type does SI8642ET-AS2R use, and what does "AS2" signify?
SI8642ET-AS2R uses a 16-pin wide-body SOIC package with the "AS2" suffix denoting the IS2 variant-tie-bar-free construction that achieves 8 mm creepage distance while maintaining standard SOIC-16 land pattern and dimensions, critical for high-voltage EV system spacing requirements.
How does the dual-enable architecture of SI8642ET-AS2R improve system design?
SI8642ET-AS2R features EN1 (controls A3/A4) and EN2 (controls B3/B4), enabling independent tri-state control of two isolated signal pairs. This allows selective channel shutdown-e.g., disabling gate drive outputs while maintaining sensor feedback-reducing EMI and simplifying fault recovery in motor control systems.
Is SI8642ET-AS2R qualified for automotive applications?
Yes, SI8642ET-AS2R carries the "-A" automotive suffix (embedded in "AS2R") and is fully AEC-Q100 Grade 1 qualified (–40 °C to +125 °C). It is manufactured using automotive-specific process flows, supported by AIAG-compliant PPAP documentation, IMDS/CAMDS listings, and zero-defect methodology throughout production.
SI8642ET-AS2R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si864x
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.375V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8642ET-AS2R FAQ
1.How can I place an order for SI8642ET-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8642ET-AS2R 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 SI8642ET-AS2R reliable?
The price and inventory of SI8642ET-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8642ET-AS2R is usually 5 days.
3.What payment methods are accepted for SI8642ET-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8642ET-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8642ET-AS2R?
SI8642ET-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8642ET-AS2R 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 SI8642ET-AS2R?
For technical support, including SI8642ET-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8642ET-AS2R requirements.
6.How does Aetrix verify that SI8642ET-AS2R is sourced from the original manufacturer or authorized distributors?
All SI8642ET-AS2R 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 SI8642ET-AS2R meets industry standards.
7.What is the process for return or replacement of SI8642ET-AS2R?
All SI8642ET-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI8642ET-AS2R, 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 SI8642ET-AS2R part is unused and in its original packaging.
Return procedure for SI8642ET-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8642ET-AS2R 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…
