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Skyworks Solutions Inc. SI86S642EB-IU
- Part No.:
- SI86S642EB-IU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642EB-IU.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:1,665
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Product details
Overview
SI86S642EB-IU 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, 3.5 ns pulse width distortion, and 6000 VRMS isolation rating. Designed for isolated SPI interfaces in battery management systems and motor control inverters, it operates from 2.25–5.5 V on both sides with fail-safe default-low output configuration.
For engineers reviewing the SI86S642EB-IU datasheet, SI86S642EB-IU pinout, SI86S642EB-IU application, or SI86S642EB-IU equivalent, key selection criteria include its 4-channel forward/reverse I/O architecture, AEC-Q100 qualification, IEC 60747-17 reinforced insulation rating, and support for input deglitch filtering (36 ns) - all critical for automotive and industrial safety-critical isolation designs.
Technical Context
The SI86S642EB-IU implements RF-based on/off keying modulation across a monolithic silicon dioxide isolation barrier, eliminating startup initialization and enabling robust noise immunity. Its dual-supply architecture (VDD1/VDD2) supports independent 2.25–5.5 V operation per side, with undervoltage lockout (UVLO) thresholds at 2.10–2.25 V (rising) and 1.98–2.12 V (falling).
It integrates Schmitt-trigger + CMOS threshold inputs, tri-state outputs with enable control (EN1/EN2), and selectable fail-safe mode (default low, per -I suffix). The device includes 100 kΩ weak pulldown on unpowered I/O and supports sleep mode via external control for power optimization in intermittent-use applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - enables high-speed isolated communication in real-time motor control and BMS telemetry. |
| Propagation Delay | 10 ns typical - ensures tight timing alignment between controller and isolated peripherals in closed-loop systems. |
| Pulse Width Distortion | 3.5 ns typical - preserves signal integrity for clocked protocols like SPI and QSPI with minimal duty-cycle skew. |
| Isolation Rating | 6000 VRMS - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for 400–800 V DC bus applications. |
| Supply Voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| CMTI | 100 kV/µs minimum - rejects fast transients common in switching power converters and inverter gate drivers. |
Pinout & Package
SI86S642EB-IU is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation. Pin assignments follow the Si86S64x family layout with four bidirectional channels, dual enable inputs, and separate supply/ground pairs per side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power domain | Supplies and grounds the input-side logic; must be bypassed with 0.1 µF + 10 µF capacitors. |
| A1–A4 | Side A digital I/O | Bidirectional isolated data lines; support Schmitt-trigger + CMOS thresholds for noise immunity. |
| EN1 | Side A output enable | Active-high control: drives A-side outputs into high-impedance when low, enabling bus sharing. |
| VDD2, GND2 | Side B power domain | Independent supply domain for output-side logic; enables galvanic separation of ground domains. |
| B1–B4 | Side B digital I/O | Corresponding isolated outputs/inputs to A1–A4; direction determined by internal RF modulation path. |
| EN2 | Side B output enable | Active-high control: places B-side outputs in high-impedance state, allowing multi-drop configurations. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift issues of optocouplers; enables stable 150 Mbps operation over full temperature range. |
| Fail-safe default-low output | Guarantees known logic state during power loss on Side A, critical for safe shutdown in traction inverters and BMS fault handling. |
| Input deglitch filter (36 ns) | Rejects sub-36 ns noise pulses on A/B-side inputs-essential for reliable operation near high-dV/dt IGBT/MOSFET switching nodes. |
| AEC-Q100 Grade 1 | Validated for automotive use from –40 to +125 °C with zero defects in HTOL, TC, and ESD testing-supports PPAP documentation. |
| Tri-state output control | EN1/EN2 pins allow dynamic bus arbitration without external logic, reducing component count in multi-peripheral isolated SPI systems. |
Applications
| Motor Control Inverter | Battery Management System |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback between MCU and 3-phase IGBT/SiC modules in EV traction inverters. IC Role / Device Role / Timing Role: Bidirectional signal isolator for PWM command transmission and fault reporting across 600–800 V DC bus. Use Value: 10 ns propagation delay enables precise dead-time control; 6000 VRMS rating satisfies reinforced insulation requirements for ASIL-D functional safety. | Use Scenario: Isolating cell voltage monitoring and balancing commands between battery monitor IC and MCU in 400–800 V BEV packs. IC Role / Device Role / Timing Role: High-CMTI digital isolator for SPI communication between isolated ADCs and host processor. Use Value: 100 kV/µs CMTI prevents corruption during pack-level fault transients; AEC-Q100 qualification ensures long-term reliability in harsh thermal cycles. |
| Industrial PLC I/O Module | Onboard Charger (OBC) |
Use Scenario: Providing channel-to-channel and field-to-controller isolation for digital input/output cards in factory automation systems. IC Role / Device Role / Timing Role: 4-channel isolator enabling simultaneous status reporting and command execution across multiple sensor/actuator channels. Use Value: WB SOIC-16 package delivers 10.3 mm creepage for 300–600 VAC industrial mains isolation; 150 Mbps supports high-speed diagnostics. | Use Scenario: Isolating CAN communication and AC/DC control signals between primary-side PFC controller and secondary-side DC-DC regulator in 11 kW OBCs. IC Role / Device Role / Timing Role: Reinforced isolator for bidirectional control and telemetry across 1.2 kV reinforced barrier in Class II medical-grade charging systems. Use Value: IEC 60747-17 and UL 1577 certification simplifies end-equipment safety approval; default-low fail-safe prevents unintended gate activation during brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4402BRIZ | 4-channel, 100 Mbps, 2.5 kVRMS isolation, SOIC-16 (narrow body), no deglitch filter | Limited to 2.5 kVRMS; not AEC-Q100 qualified; unsuitable for 600 V+ bus applications | Choose ADUM4402BRIZ only for cost-sensitive non-automotive 24–48 V systems where 6000 VRMS is not required. |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, SOIC-16 (wide body), no fail-safe option, no deglitch filter | Lower data rate limits SPI clock speed; lacks default-low ordering option and AEC-Q100 qualification | Select ISO6741FDWR for industrial applications requiring 5000 VRMS but not automotive qualification or 150 Mbps throughput. |
Compared with ADUM4402BRIZ and ISO6741FDWR, SI86S642EB-IU delivers higher isolation voltage (6000 VRMS), faster data rate (150 Mbps), automotive qualification, and configurable fail-safe behavior - making it the only option suitable for ASIL-B/C traction inverter and OBC control loops.
Availability
SI86S642EB-IU is available at Aetrix Electronics and suitable for battery management systems, motor control inverters, and onboard chargers requiring stable component supply across automotive production lifecycles and industrial equipment refresh cycles.
Supply support for SI86S642EB-IU 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 automotive and industrial digital isolation, emphasizing reinforced safety certification, high CMTI, and robust operation in electric vehicle powertrain and energy storage systems.
FAQ
What is the isolation voltage rating of the SI86S642EB-IU and which safety standards does it meet?
The SI86S642EB-IU provides 6000 VRMS reinforced isolation per UL 1577 for 1 minute and complies with IEC 60747-17, CSA 62368-1/60601-1, and CQC GB4943.1. This rating is validated for the WB SOIC-16 package and supports end-equipment certification in automotive traction inverters and medical-grade chargers.
Does the SI86S642EB-IU support fail-safe operation, and how is it configured?
Yes, the SI86S642EB-IU is ordered with default-low fail-safe behavior (indicated by the "-I" suffix). When Side A supply is unpowered and Side B remains active, outputs B1–B4 are held low - a critical safety feature for preventing unintended actuation in motor control and BMS fault conditions.
What is the purpose of the EN1 and EN2 pins on the SI86S642EB-IU?
The EN1 and EN2 pins are active-high enable inputs that place the corresponding side's outputs (A1–A4 or B1–B4) into high-impedance state. This allows bus sharing in multi-peripheral SPI systems and reduces power consumption during idle periods without requiring external tri-state buffers.
Can the SI86S642EB-IU be used in automotive applications, and what qualifications does it hold?
Yes, the SI86S642EB-IU is AEC-Q100 Grade 1 qualified (–40 to +125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation. It is deployed in onboard chargers, battery management systems, and traction inverters for BEVs and PHEVs.
What is the function of the input deglitch filter in the SI86S642EB-IU, and how does it improve system reliability?
The SI86S642EB-IU includes a 36 ns input deglitch filter that blocks noise pulses shorter than 36 ns on A1–A4 and B1–B4 lines. This prevents false triggering from EMI generated by nearby power switches, ensuring deterministic behavior in high-dV/dt environments like motor drives and SMPS.
SI86S642EB-IU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (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:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- 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-QSOP
SI86S642EB-IU FAQ
1.How can I place an order for SI86S642EB-IU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642EB-IU 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 SI86S642EB-IU reliable?
The price and inventory of SI86S642EB-IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642EB-IU is usually 5 days.
3.What payment methods are accepted for SI86S642EB-IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642EB-IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642EB-IU?
SI86S642EB-IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642EB-IU 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 SI86S642EB-IU?
For technical support, including SI86S642EB-IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642EB-IU requirements.
6.How does Aetrix verify that SI86S642EB-IU is sourced from the original manufacturer or authorized distributors?
All SI86S642EB-IU 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 SI86S642EB-IU meets industry standards.
7.What is the process for return or replacement of SI86S642EB-IU?
All SI86S642EB-IU units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642EB-IU, 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 SI86S642EB-IU part is unused and in its original packaging.
Return procedure for SI86S642EB-IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642EB-IU 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
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