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Skyworks Solutions Inc. SI8642ED-B-IS2
- Part No.:
- SI8642ED-B-IS2
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8642ED-B-IS2.pdf
- Description:
- DGTL ISO 5000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,681
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Product details
Overview
SI8642ED-B-IS2 from Skyworks is a quad-channel digital isolator with 2 input channels on VDD1 side and 2 output channels on VDD2 side, rated for 5 kVRMS reinforced isolation in wide-body SOIC-16 (IS2) package. It supports DC–150 Mbps data rates, achieves <10 ns propagation delay, and features selectable high-default fail-safe mode - used in isolated motor control gate drivers and battery management system signal interfaces.
For engineers reviewing the SI8642ED-B-IS2 datasheet, SI8642ED-B-IS2 pinout, SI8642ED-B-IS2 application, or SI8642ED-B-IS2 equivalent, key selection criteria include its 5 kVRMS reinforced insulation rating (VDE 0884-10), dual enable inputs (EN1/EN2) for independent channel control, 2.5–5.5 V dual-supply operation, and automotive-grade qualification readiness via AEC-Q100-compliant manufacturing flow.
Technical Context
The SI8642ED-B-IS2 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 provides independent VDD1/VDD2 domains with Schmitt-trigger inputs and tri-state outputs controlled by EN1 (for A3/A4) and EN2 (for B1/B2).
It operates across –40 to +125 °C with undervoltage lockout (UVLO) on both sides, supports fail-safe default-high output during input-side power loss, and delivers precise timing: 0.5 ns typical channel-channel skew and 2 ns propagation delay skew - critical for synchronized PWM isolation in traction inverters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS reinforced (VDE 0884-10 certified); enables direct interface with 1000 VDC bus systems in EV inverters. |
| Max Data Rate | 150 Mbps; supports high-resolution encoder feedback and fast SPI communication in servo drives. |
| Propagation Delay | 5–13 ns (typ. 8 ns); ensures sub-10 ns timing alignment between isolated control and feedback paths. |
| Supply Voltage Range | 2.5–5.5 V per side; allows interoperability with 3.3 V microcontrollers and 5 V gate drivers without level shifters. |
| Fail-Safe Default | High-output state when VDD1 unpowered; prevents unintended gate turn-on in IGBT/MOSFET drivers during brownout. |
| Common-Mode Transient Immunity | 60 kV/µs (min); maintains signal integrity in high-dV/dt environments like motor phase switching. |
| Channel Configuration | 2-input / 2-output (A3,A4,B1,B2); matches dual-channel PWM + fault feedback requirements in half-bridge modules. |
Pinout & Package
SI8642ED-B-IS2 uses a 16-pin wide-body SOIC package (IS2 variant) with 8 mm creepage, no tie bars, and standard WB SOIC land pattern. The IS2 package meets reinforced insulation requirements for 5 kVRMS while maintaining PCB layout compatibility with standard WB SOIC footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies logic and transmitter circuitry for channels A3/A4; must be bypassed with 0.1 µF capacitor. |
| GND1 | Input-side ground reference | Return path for VDD1; requires low-inductance connection to isolate noise coupling into isolation barrier. |
| A3, A4 | Input signals (VDD1 domain) | Digital inputs driving isolated channels; Schmitt-trigger inputs tolerate slow edges and reject >0.44 V hysteresis noise. |
| EN1 | Enable control for A3/A4 outputs | When low, forces A3/A4 outputs into high-impedance; enables safe shutdown of isolated gate drive signals. |
| VDD2 | Output-side power supply | Supplies receiver and output driver circuitry for B1/B2; independent of VDD1 for true galvanic separation. |
| GND2 | Output-side ground reference | Return path for VDD2; physically separated from GND1 to maintain 5 kVRMS isolation barrier integrity. |
| B1, B2 | Isolated output signals (VDD2 domain) | CMOS outputs with ~50 Ω impedance; compatible with 50 Ω transmission lines for clean 150 Mbps signal integrity. |
| EN2 | Enable control for B1/B2 outputs | When low, places B1/B2 in high-impedance; allows independent disable of feedback or status channels. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced 5 kVRMS isolation | VDE 0884-10 certified with 10 kV surge capability; eliminates need for external creepage extenders in 1000 VDC systems. |
| Dual independent enable inputs | EN1 controls A3/A4; EN2 controls B1/B2 - enables selective channel shutdown without affecting other signal paths. |
| Fail-safe high-default output | Outputs remain logic high when VDD1 is lost; prevents false turn-off in safety-critical gate driver applications. |
| Ultra-low power at 100 Mbps | 11 mA per side at 5 V (100 Mbps, 15 pF load); reduces thermal load in densely packed BMS and inverter control boards. |
| Automotive-ready process flow | Manufactured with AEC-Q100-aligned flows and AIAG PPAP support; qualifies for OBC, BMS, and traction inverter use. |
Applications
| Motor Control Gate Driver | Battery Management System |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and IGBT/MOSFET gate drivers in industrial servo drives. IC Role / Device Role / Timing Role: Quad-channel isolator providing independent control (A3/A4) and status feedback (B1/B2) with matched propagation delay. Use Value: 0.5 ns channel-channel skew ensures synchronized edge timing across dual half-bridge legs, minimizing shoot-through risk. |
Use Scenario: Isolating cell voltage monitoring and balancing control signals between battery pack and MCU in EV battery packs. IC Role / Device Role / Timing Role: Provides reinforced 5 kVRMS isolation for high-side sensing and balancing command transmission across 400–800 V stacks. Use Value: 60 kV/µs CMTI prevents false triggering during high-dV/dt transients caused by contactor switching or load dumps. |
| On-Board Charger | Traction Inverter Control |
Use Scenario: Isolating digital control signals between AC/DC controller and DC/DC stage in bidirectional OBCs. IC Role / Device Role / Timing Role: Transmits isolated enable, fault, and synchronization signals across primary-secondary boundary with fail-safe defaults. Use Value: High-default fail-safe mode ensures charger remains disabled during input-side power interruption, meeting ISO 6469 safety requirements. |
Use Scenario: Isolating gate drive signals and current-sense feedback in multi-level traction inverters for BEVs. IC Role / Device Role / Timing Role: Delivers precise, low-skew timing for SiC MOSFET gate drivers operating at >100 kHz switching frequencies. Use Value: 8 ns typical propagation delay and 2 ns delay skew enable tight dead-time control, improving efficiency and reducing EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642BD-B-IS2 | Same package and pinout; default output state is low (not high) during VDD1 power loss. | Suitable where fail-safe low output is required (e.g., disable-by-default safety interlocks). | Select SI8642BD-B-IS2 only if system logic requires active-low default behavior; otherwise SI8642ED-B-IS2 is preferred for gate driver safety. |
| ADUM2402BRWZ | 4-channel, 2/2 configuration; 2.5–5.5 V supply; 5 kVRMS (UL/CSA), but not VDE 0884-10 reinforced certified. | Lacks VDE-reinforced certification; unsuitable for EU automotive or medical systems requiring VDE compliance. | Choose ADUM2402BRWZ only for cost-sensitive industrial applications without VDE 0884-10 mandates; SI8642ED-B-IS2 provides broader regulatory coverage. |
Compared with SI8642BD-B-IS2, SI8642ED-B-IS2 provides fail-safe high output essential for preventing unintended power device activation; compared with ADUM2402BRWZ, it delivers full VDE 0884-10 reinforced certification required for automotive traction systems and medical isolation barriers.
Availability
SI8642ED-B-IS2 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, on-board chargers, and industrial motor drives requiring stable component supply with long-term lifecycle assurance.
Supply support for SI8642ED-B-IS2 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 for high-reliability, high-speed digital isolation in automotive, industrial, and medical systems - delivering reinforced safety certification, ultra-low power, and precise timing in compact packages.
FAQ
What is the isolation rating and certification status of SI8642ED-B-IS2?
SI8642ED-B-IS2 is rated for 5 kVRMS reinforced isolation and certified to VDE 0884-10, UL 1577, CSA 5A, and CQC GB4943.1 standards. Its IS2 package provides 8 mm creepage distance and meets reinforced insulation requirements for 1000 VDC working voltage applications such as EV traction inverters and medical power supplies.
How does the fail-safe mode operate in SI8642ED-B-IS2?
In SI8642ED-B-IS2, the fail-safe mode is factory-configured to default-high output: when VDD1 is unpowered but VDD2 remains active, outputs B1 and B2 hold logic high. This behavior prevents unintended gate turn-off in isolated IGBT drivers during input-side brownouts, enhancing functional safety in motor control systems.
What are the enable pin functions for SI8642ED-B-IS2?
SI8642ED-B-IS2 has two independent enable inputs: EN1 controls outputs A3 and A4 (input-side driven), while EN2 controls outputs B1 and B2 (output-side driven). Driving either enable low places its associated outputs in high-impedance state - enabling selective channel shutdown without affecting other signal paths in complex control architectures.
Does SI8642ED-B-IS2 support automotive-grade qualification?
Yes - SI8642ED-B-IS2 is built using Skyworks' automotive-specific manufacturing flows and is AEC-Q100 qualified. It supports AIAG-compliant PPAP documentation, IMDS/CAMDS material declarations, and zero-defect methodology throughout design and production - making it suitable for on-board chargers, battery management systems, and traction inverters in BEV/HEV platforms.
What is the maximum data rate and timing performance of SI8642ED-B-IS2?
SI8642ED-B-IS2 supports up to 150 Mbps data rate with 5–13 ns propagation delay (typ. 8 ns), 0.5 ns typical channel-channel skew, and 2 ns propagation delay skew. These specifications ensure precise, low-jitter signal transfer for high-frequency PWM control and fast serial interfaces in real-time motor and power conversion systems.
SI8642ED-B-IS2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si864x
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 4ns, 4ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8642ED-B-IS2 FAQ
1.How can I place an order for SI8642ED-B-IS2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8642ED-B-IS2 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-B-IS2 reliable?
The price and inventory of SI8642ED-B-IS2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8642ED-B-IS2 is usually 5 days.
3.What payment methods are accepted for SI8642ED-B-IS2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8642ED-B-IS2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8642ED-B-IS2?
SI8642ED-B-IS2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8642ED-B-IS2 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-B-IS2?
For technical support, including SI8642ED-B-IS2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8642ED-B-IS2 requirements.
6.How does Aetrix verify that SI8642ED-B-IS2 is sourced from the original manufacturer or authorized distributors?
All SI8642ED-B-IS2 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-B-IS2 meets industry standards.
7.What is the process for return or replacement of SI8642ED-B-IS2?
All SI8642ED-B-IS2 units undergo pre-shipment inspection (PSI). If there is an issue with SI8642ED-B-IS2, 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-B-IS2 part is unused and in its original packaging.
Return procedure for SI8642ED-B-IS2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8642ED-B-IS2 Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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