My Inquiry
My Account
Skyworks Solutions Inc. SI8642ED-AS2R
- Part No.:
- SI8642ED-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8642ED-AS2R.pdf
- Description:
- AUTOMOTIVE 5 KV 2 FORWARD & 2 RE
- Quantity:
- Payment:
- Shipping:
Inventory:3,418
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8642ED-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-default fail-safe output mode. It operates across –40 to 125 °C and supports 2.5–5.5 V dual supplies, enabling robust signal isolation in high-noise motor control and battery management systems.
For engineers reviewing the SI8642ED-AS2R datasheet, SI8642ED-AS2R pinout, SI8642ED-AS2R application, or SI8642ED-AS2R equivalent, key selection criteria include its WB SOIC-16 package with 8 mm creepage, AEC-Q100 qualification, VDE 0884-10 reinforced certification, and tri-state enable control for channel-level output gating.
Technical Context
The SI8642ED-AS2R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and delivering stable timing across temperature and lifetime. Its architecture provides inherent noise immunity via Schmitt-trigger inputs and 50 kV/µs common-mode transient immunity.
It features two independent enable inputs (EN1, EN2), each controlling a pair of outputs (A3/A4 and B1/B2 respectively), supporting flexible channel gating in bidirectional isolated interfaces. The device maintains precise timing with ≤2.5 ns channel-channel skew and ≤4.5 ns propagation delay skew.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS reinforced (VDE 0884-10, UL 1577, CSA 5A, CQC GB4943.1) |
| Data Rate | DC to 150 Mbps - supports high-speed SPI, RS-485, and CAN FD isolation without oversampling |
| Propagation Delay | 5–13 ns - enables tight timing budgets in real-time motor control loops |
| Supply Voltage | 2.5–5.5 V per side - interoperable with 3.3 V microcontrollers and 5 V analog front-ends |
| Fail-Safe Default | High - ensures safe logic-high state during input-side power loss in safety-critical BMS monitoring |
| Power Consumption | 11 mA per side at 100 Mbps (5 V) - reduces thermal load in densely packed inverters |
| Operating Temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient conditions |
Pinout & Package
SI8642ED-AS2R is housed in a RoHS-compliant wide-body SOIC-16 package (–IS2 variant) with 8 mm creepage distance, no tie bars, and standard land pattern compatibility. This package meets reinforced insulation requirements for 5 kVRMS working voltage and supports automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Input-side power supply | Supplies isolation barrier transmitter and input logic; bypassed with 0.1 µF capacitor |
| VDD2, GND2 | Output-side power supply | Supplies receiver and output drivers; independent domain enables level shifting |
| A1–A4 | Input channels | CMOS/Schmitt-trigger inputs; A3/A4 paired with EN1 for gated output control |
| B1–B4 | Output channels | Push-pull outputs; B1/B2 controlled by EN2; default high during VDD1 loss |
| EN1, EN2 | Enable controls | Active-high enables; drive outputs to high-impedance when low - supports dynamic channel shutdown |
| NC | No-connect | Pins 1, 16 - not internally connected; may be left floating, tied to VDD, or grounded |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift; delivers stable 60-year life at rated voltage |
| Tri-state enable architecture | EN1/EN2 independently gate A3/A4 and B1/B2 - enables partial isolation shutdown without PCB redesign |
| Selectable fail-safe output | High-default state ensures safe system response during input-side brownout in traction inverter gate drives |
| 50 kV/µs CMTI | Rejects fast transients from IGBT switching noise - prevents false triggering in high-dV/dt environments |
| 0.5 ns channel-channel skew | Preserves phase alignment across isolated PWM signals - critical for multi-phase motor commutation |
Applications
| Motor Control Systems | Battery Management Systems |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Quad-channel isolator providing independent A3/A4 and B1/B2 paths with matched propagation delay for synchronized PWM edge delivery. Use Value: 0.5 ns channel-channel skew and 5 ns minimum pulse width ensure clean dead-time control and prevent shoot-through faults. |
Use Scenario: Isolating cell voltage monitoring and pack-level communication between MCU and BMS analog front-end. IC Role / Device Role / Timing Role: Bidirectional 2×2 isolation interface with fail-safe high default protecting MCU from erroneous low signals during sensor-side power loss. Use Value: AEC-Q100 qualification and –40 to 125 °C operation guarantee reliability across vehicle lifecycle and thermal cycling. |
| Industrial PLC I/O Modules | On-Board Chargers |
Use Scenario: Isolating digital inputs/outputs between field-side sensors/actuators and controller-side logic in harsh factory environments. IC Role / Device Role / Timing Role: High-noise-immunity isolator with Schmitt-trigger inputs and 50 kV/µs CMTI rejecting EMI from nearby VFDs and solenoids. Use Value: 2.5–5.5 V dual-supply flexibility allows direct interfacing with both 3.3 V controllers and 5 V legacy I/O standards. |
Use Scenario: Isolating AC-DC control signals and DC-DC feedback loops in bi-directional OBC topologies. IC Role / Device Role / Timing Role: Reinforced 5 kVRMS isolator certified to VDE 0884-10 and IEC 62368-1 for primary-secondary separation in Class II systems. Use Value: WB SOIC-16 (–IS2) package with 8 mm creepage satisfies reinforced insulation requirements without custom layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642BD-AS2R | Same 2×2 channel count and WB SOIC-16 package, but default-low fail-safe output | Suitable where safety logic requires active-low default (e.g., enable lines that must deassert on fault) | Select SI8642BD-AS2R only if system architecture mandates low-default behavior during input power loss |
| ADUM2402BRWZ | 4-channel, 2×2 configuration; 25 kV/µs CMTI; 100 Mbps max; SOIC-16 wide body; no selectable fail-safe mode | Lacks programmable default state and VDE 0884-10 reinforced rating - limited to basic insulation applications | Choose ADUM2402BRWZ only for cost-sensitive industrial designs where 5 kV reinforced certification is not required |
Compared with SI8642BD-AS2R, SI8642ED-AS2R provides guaranteed high-default output for fail-safe monitoring; compared with ADUM2402BRWZ, it delivers higher CMTI, faster data rate, and full VDE 0884-10 compliance - making it suitable for automotive and safety-critical industrial use.
Availability
SI8642ED-AS2R is available at Aetrix Electronics and suitable for motor control systems, battery management systems, and on-board chargers requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8642ED-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 designed specifically for high-reliability, high-noise industrial and automotive isolation applications - emphasizing low power, precise timing, and reinforced safety certification without startup initialization.
FAQ
What is the isolation rating and safety certification of SI8642ED-AS2R?
SI8642ED-AS2R provides 5 kVRMS reinforced isolation and is certified to UL 1577, CSA Component Notice 5A, VDE 0884-10 (reinforced), IEC 60950-1, IEC 62368-1, IEC 60601-1, and CQC GB4943.1. These certifications validate its suitability for medical, industrial, and automotive end-equipment requiring reinforced insulation barriers.
Does SI8642ED-AS2R require startup initialization or configuration?
No, SI8642ED-AS2R requires no startup initialization or configuration. Its RF-based isolation architecture begins transmitting valid data within 40 µs of power application, with outputs transitioning to the fail-safe high state during input-side undervoltage events - simplifying firmware design and reducing boot-time dependencies for the SI8642ED-AS2R.
How does the enable functionality work on SI8642ED-AS2R?
SI8642ED-AS2R has two independent enable inputs: EN1 controls outputs A3 and A4, while EN2 controls B1 and B2. When an enable pin is driven low, its associated outputs enter high-impedance state - allowing dynamic channel gating without affecting other isolated paths. This behavior is fully specified in the SI8642ED-AS2R datasheet Table 3.2.
What is the meaning of "-AS2R" in SI8642ED-AS2R?
The "-AS2R" suffix indicates an automotive-grade device (–A), wide-body SOIC-16 package with tie-bar elimination for 8 mm creepage (–S2), and tape-and-reel packaging (–R). Automotive qualification includes AEC-Q100 Grade 1, AIAG-compliant PPAP documentation, and IMDS/CAMDS material reporting - all verified for the SI8642ED-AS2R part number.
Can SI8642ED-AS2R operate with mismatched supply voltages on VDD1 and VDD2?
Yes, SI8642ED-AS2R supports independent 2.5–5.5 V supplies on VDD1 and VDD2, enabling level translation between 3.3 V microcontrollers and 5 V analog circuits. Each side includes undervoltage lockout (UVLO) with hysteresis, ensuring reliable operation even when supplies ramp at different rates - a key feature confirmed for SI8642ED-AS2R in datasheet Table 4.1.
SI8642ED-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:
- Capacitive 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
SI8642ED-AS2R FAQ
1.How can I place an order for SI8642ED-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8642ED-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 SI8642ED-AS2R reliable?
The price and inventory of SI8642ED-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8642ED-AS2R is usually 5 days.
3.What payment methods are accepted for SI8642ED-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8642ED-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8642ED-AS2R?
SI8642ED-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8642ED-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 SI8642ED-AS2R?
For technical support, including SI8642ED-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8642ED-AS2R requirements.
6.How does Aetrix verify that SI8642ED-AS2R is sourced from the original manufacturer or authorized distributors?
All SI8642ED-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 SI8642ED-AS2R meets industry standards.
7.What is the process for return or replacement of SI8642ED-AS2R?
All SI8642ED-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI8642ED-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 SI8642ED-AS2R part is unused and in its original packaging.
Return procedure for SI8642ED-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8642ED-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…
