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Skyworks Solutions Inc. SI86S642BB-IUR
- Part No.:
- SI86S642BB-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642BB-IUR.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,113
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Product details
Overview
SI86S642BB-IUR from Skyworks Solutions is a 4-channel, reinforced-isolation digital isolator with bidirectional signal capability, 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating. It operates across 2.25–5.5 V supplies and supports industrial motor control, isolated ADC/DAC interfaces, and battery management systems.
For engineers reviewing the SI86S642BB-IUR datasheet, SI86S642BB-IUR pinout, SI86S642BB-IUR application, or SI86S642BB-IUR equivalent, this device delivers AEC-Q100 qualified performance with fail-safe output selection, Schmitt-trigger inputs, and sleep-mode support for automotive and high-reliability embedded designs.
Technical Context
The SI86S642BB-IUR implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity (100 kV/µs CMTI). Its architecture supports independent side-A and side-B undervoltage lockout (UVLO) with RSTB reset thresholds at ~1.7 V and 0.3 ms start-up stabilization.
This variant features four isolated channels with two forward (A→B) and two reverse (B→A) paths, EN1/EN2 enable inputs per side, and selectable default-output state (high/low) during unpowered conditions - configured via ordering option, not runtime control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI data lanes. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical systems. |
| Propagation delay | 10 ns typical - enables precise timing in closed-loop motor control and real-time power converter feedback paths. |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dv/dt noise environments such as traction inverters and SMPS gate drives. |
| Fail-safe mode | Selectable default-high or default-low output - prevents undefined states during brownout or power sequencing events. |
Pinout & Package
SI86S642BB-IUR is housed in a narrow-body SOIC-16 package (NB SOIC-16), 7.5 mm body width, 1.27 mm pitch, with creepage/clearance compliant for reinforced insulation up to 6000 VRMS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | A1–A4 | Side A digital I/O channels - configurable as inputs or outputs depending on direction control logic. |
| 5 | EN1 | Active-high enable for all Side A outputs - places A-side drivers in high-impedance state when low. |
| 6 | VDD1 | Side A power supply - requires 0.1 µF + 10 µF bypass capacitors placed near pin. |
| 7, 8 | GND1 | Side A ground reference - must be separated from GND2 by ≥8 mm creepage for safety compliance. |
| 9, 10, 11, 12 | B1–B4 | Side B digital I/O channels - electrically isolated from A-side; mirror A1–A4 functionality across barrier. |
| 13 | EN2 | Active-high enable for all Side B outputs - independent control of B-side driver state. |
| 14 | VDD2 | Side B power supply - decoupling identical to VDD1; supports independent voltage domain operation. |
| 15, 16 | GND2 | Side B ground reference - forms isolation barrier boundary with GND1; defines secondary-side return path. |
Key Features
| Feature | Design Value |
|---|---|
| No-startup initialization | RF modulation architecture eliminates boot sequence - outputs become valid within 0.3 ms after VDD exceeds UVLO+. |
| Schmitt-trigger + CMOS threshold inputs | Input hysteresis ≥0.15 × VDDx - rejects sub-36 ns noise pulses and improves noise margin in noisy industrial environments. |
| Tri-state outputs with enable | EN1/EN2 pins provide single-point control over all outputs per side - simplifies bus arbitration and reduces external logic. |
| Reinforced IEC 60747-17 rating | Validated for 6000 VRMS withstand - satisfies safety requirements for medical (60601-1) and industrial (62368-1) end-equipment certification. |
| AEC-Q100 qualification | Grade 1 (–40 to +125 °C) qualification - confirms reliability for automotive onboard chargers, BMS, and traction inverters. |
Applications
| Industrial Motor Control | Isolated ADC/DAC Interface |
|---|---|
Use Scenario: Gate drive signal isolation in 3-phase inverter stages for servo and pump drives. IC Role / Device Role / Timing Role: Bidirectional channel pair transmits PWM enable/disable and fault feedback across isolation barrier with <10 ns skew. Use Value: Enables fast, deterministic fault response (<100 ns loop time) while maintaining 6000 VRMS working voltage compliance. |
Use Scenario: Isolating serial interface between microcontroller and isolated sigma-delta ADC in precision current sensing. IC Role / Device Role / Timing Role: Four-channel isolator carries SCLK, SDATA, CS, and DRDY signals with matched propagation delay across all paths. Use Value: Preserves timing integrity of 24-bit conversion cycles at up to 1 MSPS sampling rates without added jitter or skew. |
| Automotive Battery Management | Onboard Charger Communication |
Use Scenario: Cell monitoring IC communication isolation in high-voltage battery packs (up to 1000 V DC). IC Role / Device Role / Timing Role: Transfers voltage/temperature telemetry and balancing commands between MCU and isolated slave controllers. Use Value: Supports daisy-chain topology with fail-safe default-low output to prevent unintended cell balancing during power loss. |
Use Scenario: Isolating CAN FD or UART communication between OBC controller and vehicle ECU. IC Role / Device Role / Timing Role: Provides galvanic separation for control/status signals while maintaining 150 Mbps bandwidth for firmware updates. Use Value: Meets CISPR 25 Class 5 emissions limits due to integrated RF modulation and 100 kV/µs CMTI immunity. |
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, 5000 VRMS, 15 ns propagation delay, no sleep mode, 3.13–5.5 V supply. | Lacks AEC-Q100 qualification and 6000 VRMS rating - suitable for non-automotive industrial use only. | Choose ADUM4402BRIZ where lower cost and legacy design compatibility outweigh need for highest isolation rating and automotive qualification. |
| ISO6742FDWR | 4-channel, 50 Mbps, 5000 VRMS, 16 ns propagation delay, 1.71–5.5 V supply, no fail-safe selection. | Lower speed and no programmable default output - limited to slower control loops and non-safety-critical functions. | Choose ISO6742FDWR when system timing budget allows >16 ns delay and safety standards permit 5000 VRMS reinforcement. |
Compared with ADUM4402BRIZ and ISO6742FDWR, the SI86S642BB-IUR provides superior isolation rating (6000 VRMS), faster timing (10 ns vs. ≥15 ns), AEC-Q100 qualification, and configurable fail-safe behavior - making it the preferred choice for automotive BMS, traction inverters, and high-end industrial servo drives requiring certified reinforced insulation.
Availability
SI86S642BB-IUR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated analog-to-digital converter interfaces requiring stable component supply and long-term lifecycle assurance.
Supply support for SI86S642BB-IUR 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 markets.
The Si86S6xx family was designed specifically for safety-critical isolation in automotive electrification and industrial automation, delivering reinforced insulation, AEC-Q100 qualification, and RF-based noise immunity without startup latency.
FAQ
What is the isolation voltage rating of the SI86S642BB-IUR?
The SI86S642BB-IUR is rated for 6000 VRMS isolation for one minute per UL 1577 and certified to IEC 60747-17 for reinforced insulation. This rating applies to the NB SOIC-16 package and supports safety-critical applications including medical equipment (60601-1) and industrial systems (62368-1).
Does the SI86S642BB-IUR require startup initialization or configuration?
No, the SI86S642BB-IUR uses RF-based on/off keying and requires no startup initialization. Outputs become valid within 0.3 ms after VDD exceeds the UVLO+ threshold (2.18 V typical), with internal 100 kΩ pulldown ensuring defined state during power-up.
How does the fail-safe output mode work on the SI86S642BB-IUR?
The SI86S642BB-IUR offers factory-selectable default output state (high or low) during unpowered conditions. When VDD1 or VDD2 falls below UVLO–, outputs hold the selected default state if the opposite side remains powered - preventing undefined logic in brownout scenarios.
What is the maximum data rate supported by the SI86S642BB-IUR?
The SI86S642BB-IUR supports data rates from DC up to 150 Mbps per channel. This enables use in high-speed isolated serial interfaces such as SPI, QSPI, and UART links in automotive onboard chargers and industrial PLC backplanes.
Is the SI86S642BB-IUR qualified for automotive applications?
Yes, the SI86S642BB-IUR is AEC-Q100 qualified (Grade 1, –40 to +125 °C) and built using automotive-specific manufacturing flows. It supports automotive applications including battery management systems, onboard chargers, and traction inverters with full PPAP documentation support.
SI86S642BB-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
SI86S642BB-IUR FAQ
1.How can I place an order for SI86S642BB-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642BB-IUR 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 SI86S642BB-IUR reliable?
The price and inventory of SI86S642BB-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642BB-IUR is usually 5 days.
3.What payment methods are accepted for SI86S642BB-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642BB-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642BB-IUR?
SI86S642BB-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642BB-IUR 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 SI86S642BB-IUR?
For technical support, including SI86S642BB-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642BB-IUR requirements.
6.How does Aetrix verify that SI86S642BB-IUR is sourced from the original manufacturer or authorized distributors?
All SI86S642BB-IUR 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 SI86S642BB-IUR meets industry standards.
7.What is the process for return or replacement of SI86S642BB-IUR?
All SI86S642BB-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642BB-IUR, 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 SI86S642BB-IUR part is unused and in its original packaging.
Return procedure for SI86S642BB-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642BB-IUR 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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