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Skyworks Solutions Inc. SI86SL42BC-AS1R
- Part No.:
- SI86SL42BC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL42BC-AS1R.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:1,493
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Product details
Overview
SI86SL42BC-AS1R from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced 6000 VRMS isolation, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features two forward and two reverse channels, Schmitt-trigger inputs, tri-state outputs with enable, and operates across –40 to 125 °C in a WB SOIC-16 package. It is used in battery management systems and traction inverters where high noise immunity and fail-safe operation are critical.
For engineers reviewing the SI86SL42BC-AS1R datasheet, SI86SL42BC-AS1R pinout, SI86SL42BC-AS1R application, or SI86SL42BC-AS1R equivalent, key selection criteria include reinforced IEC 60747-17 certification, 10 ns typical propagation delay, 3.5 ns pulse width distortion, sleep mode support via SMb pin, and default-low fail-safe output configuration.
Technical Context
The SI86SL42BC-AS1R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity. Its architecture supports independent UVLO monitoring per side (VDD1/VDD2), RSTB reset thresholds (~1.7 V), and configurable directionality via internal channel mapping.
It integrates a dedicated SMb pin for active-low sleep control, reducing quiescent current to 750 µA per side while retaining one always-on channel for wake-up detection. The device uses CMOS thresholds with Schmitt-trigger inputs and supports tri-state outputs via EN1/EN2 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces including isolated SPI and QSPI data paths. |
| Isolation rating | 6000 VRMS - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical automotive and industrial applications. |
| Propagation delay | 10 ns typical - enables precise timing alignment in real-time motor control and power converter feedback loops. |
| Pulse width distortion | 3.5 ns typical - ensures minimal duty cycle degradation for PWM signal isolation in inverter gate drivers. |
| Supply voltage | 2.25 to 5.5 V - allows direct interface with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive use including onboard chargers and battery electric vehicle power stages. |
| Transient immunity | 100 kV/µs minimum - provides immunity against fast-switching EMI in high-dv/dt power electronics environments. |
Pinout & Package
SI86SL42BC-AS1R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance compliant for 6000 VRMS working voltage. Pinout matches Si86SM42 per Figure 3 of datasheet 206553B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | Primary-side power input (2.25–5.5 V); requires 0.1 µF + 10 µF bypass capacitors. |
| GND1 | Side A ground | Reference for Side A I/O and supply; must be separated from GND2 by isolation barrier. |
| A1–A4 | Side A digital I/O | Four bidirectional or unidirectional channels; configured as two forward/two reverse per ordering option. |
| SMb | Sleep mode control | Active-low input that disables all transmitters except wake-up monitor; pulls device into 750 µA/side sleep state. |
| GND2 | Side B ground | Secondary-side reference; galvanically isolated from GND1; defines safety barrier separation. |
| B1–B4 | Side B digital I/O | Isolated outputs corresponding to A1–A4; support tri-state via EN2 when enabled. |
| VDD2 | Side B supply | Secondary-side power input; independently regulated; supports asymmetric supply configurations. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot sequence delays - output becomes valid within 0.3 ms of VDD stabilization. |
| Selectable fail-safe mode | Default-low output during unpowered VDD1 ensures safe shutdown state in BMS fault conditions. |
| Schmitt-trigger + CMOS inputs | Provides >0.15 × VDD input hysteresis - rejects sub-36 ns noise pulses and improves noise margin in noisy motor drive environments. |
| Tri-state outputs with enable | EN1/EN2 pins allow synchronized high-impedance output states - essential for bus arbitration in isolated SPI or CAN FD interfaces. |
| Reinforced IEC 60747-17 rating | Validated for reinforced insulation per global safety standards - eliminates need for external creepage/clearance design overhead in medical and EV systems. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitoring and pack communication between high-voltage battery stack and MCU. IC Role / Device Role / Timing Role: Digital isolator providing galvanic separation for analog front-end ADC data and status signals across 400–800 V DC bus. Use Value: 6000 VRMS isolation withstand prevents leakage currents and ensures ASIL-D compliance in ISO 26262 architectures. | Use Scenario: Transmitting PWM gate drive signals and fault feedback between inverter controller and IGBT/SiC half-bridge modules. IC Role / Device Role / Timing Role: Low-latency, high-CMTI isolator delivering <10 ns propagation delay for precise dead-time control in 10–20 kHz switching inverters. Use Value: 100 kV/µs transient immunity prevents false triggering during fast dv/dt switching events in high-power traction drives. |
| Onboard Charger (OBC) | Industrial PLC I/O Module |
Use Scenario: Isolating AC-DC control loop signals and DC-DC auxiliary power sequencing between primary and secondary sides. IC Role / Device Role / Timing Role: Four-channel isolator handling bidirectional communication (UART, SPI) and unidirectional status reporting in compact OBC designs. Use Value: Low-power operation (0.25 mA/channel quiescent reduction vs. Si86S6x) extends thermal margin in sealed, convection-cooled enclosures. | Use Scenario: Providing channel-isolated digital input/output for sensor actuation and fieldbus communication in modular automation racks. IC Role / Device Role / Timing Role: Industrial-grade isolator supporting 150 Mbps data throughput for EtherCAT or PROFINET slave node synchronization. Use Value: AEC-Q100 qualification ensures long-term reliability in harsh factory environments with wide temperature cycling and vibration exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM141D0BRIZ | 4-channel, 150 Mbps, 3750 VRMS isolation, no sleep mode, 2.5 V to 5.5 V supply. | Lacks AEC-Q100 qualification and reinforced 6000 VRMS rating; suitable for industrial but not automotive safety-critical use. | Choose ADUM141D0BRIZ only if 3750 VRMS suffices and sleep mode is unnecessary. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5000 VRMS, 2.25–5.5 V, no SMb pin, lower CMTI (85 kV/µs). | Lower data rate and transient immunity limit use in high-frequency inverter control; no automotive qualification. | Select ISO7741FDWR for cost-sensitive non-automotive applications where 100 Mbps meets bandwidth needs. |
Compared with ADUM141D0BRIZ and ISO7741FDWR, SI86SL42BC-AS1R delivers higher isolation voltage (6000 VRMS), automotive qualification, integrated sleep mode, and superior transient immunity - making it the only choice for ISO 26262-compliant BMS and traction inverter designs requiring fail-safe behavior and extended temperature operation.
Availability
SI86SL42BC-AS1R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and onboard chargers requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for SI86SL42BC-AS1R 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 for wireless, automotive, and industrial markets.
The Si86Sxx family was designed specifically for high-reliability isolation in safety-critical automotive and industrial power systems, emphasizing reinforced insulation, low latency, and AEC-Q100 compliance.
FAQ
What is the isolation voltage rating of the SI86SL42BC-AS1R?
The SI86SL42BC-AS1R has a reinforced isolation rating of 6000 VRMS per UL 1577 and IEC 60747-17. This rating is validated for 1-minute withstand and supports working voltages up to 1200 V peak in end-equipment complying with IEC 62368-1 and IEC 60601-1. The SI86SL42BC-AS1R achieves this in its WB SOIC-16 package with certified creepage and clearance distances.
Does the SI86SL42BC-AS1R support fail-safe operation during power loss?
Yes, the SI86SL42BC-AS1R is ordered with default-low fail-safe output configuration. When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 are held low - a critical safety feature for battery management systems and motor control where undefined states could trigger hazardous conditions. This behavior is confirmed in Table 4 of datasheet 206553B.
How does the SMb pin function on the SI86SL42BC-AS1R?
The SMb pin on the SI86SL42BC-AS1R is an active-low sleep mode control input. When driven low, it disables all transmitter circuits except one dedicated wake-up channel, reducing total current to 750 µA per side. When released (high or open), the SI86SL42BC-AS1R resumes full operation with 150 Mbps capability and 10 ns propagation delay.
What is the maximum data rate supported by the SI86SL42BC-AS1R?
The SI86SL42BC-AS1R supports a maximum data rate of 150 Mbps across all four channels. This is achievable with CL = 15 pF loads and 5 V supplies, as specified in Table 10 of datasheet 206553B. The SI86SL42BC-AS1R maintains this rate over its full operating temperature range (–40 to 125 °C) without derating.
Is the SI86SL42BC-AS1R qualified for automotive applications?
Yes, the SI86SL42BC-AS1R is AEC-Q100 qualified for Grade 1 (–40 to 125 °C) operation. It is manufactured using automotive-specific process flows, supports AIAG-compliant PPAP documentation, and is listed in IMDS/CAMDS. These qualifications make the SI86SL42BC-AS1R suitable for onboard chargers, battery management systems, and traction inverters in battery electric vehicles.
SI86SL42BC-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 18ns, 18ns
- Pulse Width Distortion (Max):
- 7ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86SL42BC-AS1R FAQ
1.How can I place an order for SI86SL42BC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL42BC-AS1R 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 SI86SL42BC-AS1R reliable?
The price and inventory of SI86SL42BC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL42BC-AS1R is usually 5 days.
3.What payment methods are accepted for SI86SL42BC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL42BC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL42BC-AS1R?
SI86SL42BC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL42BC-AS1R 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 SI86SL42BC-AS1R?
For technical support, including SI86SL42BC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL42BC-AS1R requirements.
6.How does Aetrix verify that SI86SL42BC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI86SL42BC-AS1R 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 SI86SL42BC-AS1R meets industry standards.
7.What is the process for return or replacement of SI86SL42BC-AS1R?
All SI86SL42BC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL42BC-AS1R, 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 SI86SL42BC-AS1R part is unused and in its original packaging.
Return procedure for SI86SL42BC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL42BC-AS1R 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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