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Skyworks Solutions Inc. SI86S640BB-IU
- Part No.:
- SI86S640BB-IU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S640BB-IU.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
SI86S640BB-IU from Skyworks Solutions is a 4-channel, reinforced digital isolator with 6000 VRMS isolation rating, 150 Mbps data rate, and 10 ns typical propagation delay. It features dual supply operation (2.25–5.5 V), Schmitt-trigger + CMOS inputs, tri-state outputs with enable, and fail-safe default-low output mode. It is used in isolated ADC/DAC interfaces and motor control gate driver circuits where high CMTI and robust noise immunity are required.
For engineers reviewing the SI86S640BB-IU datasheet, SI86S640BB-IU pinout, SI86S640BB-IU application, or SI86S640BB-IU equivalent, this page delivers verified specifications, validated pin functions, automotive-grade safety certifications (AEC-Q100, IEC 60747-17), and real-world use context for industrial and EV traction inverter designs.
Technical Context
The SI86S640BB-IU implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling deterministic timing. Its architecture supports independent UVLO monitoring per side (VDD1/VDD2), 100 kV/µs transient immunity, and fail-safe output behavior during unpowered input conditions.
It integrates four bidirectional channels with dedicated EN1/EN2 enable inputs, operates across –40 to 125 °C, and meets reinforced insulation requirements per UL 1577 (6000 VRMS), CSA 62368-1/60601-1, and VDE 60747-17-making it suitable for medical and onboard charger applications requiring certified galvanic separation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, isolated feedback loops, and real-time control signaling |
| Isolation rating | 6000 VRMS - enables safe operation in 1000 VAC industrial bus and 800 VDC EV battery systems |
| Propagation delay | 10 ns typical - ensures sub-20 ns round-trip latency for closed-loop motor control timing budgets |
| Supply voltage | 2.25–5.5 V - interoperable with 3.3 V and 5 V logic domains without level shifters |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient environments |
| CMTI | 100 kV/µs min - rejects fast common-mode transients in SiC/GaN inverter switching nodes |
| Safety certification | IEC 60747-17 reinforced - satisfies creepage/clearance and partial discharge requirements for medical and EV systems |
Pinout & Package
The SI86S640BB-IU is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage) with 16-pin layout optimized for reinforced isolation. Pin spacing and internal barrier design meet 6000 VRMS withstand per UL 1577.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides isolated power domain for controller-side logic (e.g., MCU GPIO or PWM generator) |
| VDD2, GND2 | Side B power supply | Supplies isolated gate driver or sensor interface circuitry; electrically separated from Side A |
| A1–A4 | Side A digital I/O | Four unidirectional input pins accepting CMOS/Schmitt-trigger signals from MCU or FPGA |
| B1–B4 | Side B digital I/O | Four corresponding isolated output pins driving gate drivers, ADC references, or fault indicators |
| EN1, EN2 | Active-high enable | Tri-states all outputs on respective side when low-enabling system-level power gating |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot delay-output follows input immediately after UVLO exit |
| Selectable fail-safe mode | SI86S640BB-IU is ordering-option configured for default-low output during input-side power loss |
| Low power sleep mode | Not applicable to SI86S640BB-IU-sleep mode requires SMb pin (present only in SM-series variants) |
| Input deglitch filter | 36 ns filter removes sub-36 ns noise pulses-critical for noisy motor drive or SMPS feedback paths |
| High EMI immunity | 100 kV/µs CMTI and Schmitt-trigger inputs reject coupling from adjacent high-dV/dt power traces |
Applications
| Industrial Motor Control | Isolated ADC Interface |
|---|---|
Use Scenario: Gate driver signal isolation in 3-phase inverter stacks using SiC MOSFETs. IC Role / Device Role / Timing Role: Isolates PWM signals from MCU to gate driver ICs while maintaining <20 ns timing skew across all 4 channels. Use Value: Enables 100+ kHz switching with precise dead-time control and immunity to >100 V/ns common-mode transients. | Use Scenario: Isolating serial interface between precision ADC (e.g., ADS131M04) and host processor. IC Role / Device Role / Timing Role: Transfers 24-bit conversion data at up to 150 Mbps with deterministic 10 ns propagation delay. Use Value: Preserves signal integrity in high-resolution current sensing without introducing jitter or bit errors. |
| Onboard Charger (OBC) | Battery Management System (BMS) |
Use Scenario: Isolating communication and control lines between AC/DC stage controller and DC/DC stage in EV OBC. IC Role / Device Role / Timing Role: Provides reinforced isolation for UART, PWM, and fault reporting signals across 6000 VRMS barrier. Use Value: Meets IEC 62109 and UL 62368-1 reinforced insulation requirements for Class II EV charging systems. | Use Scenario: Isolating cell voltage monitor ICs (e.g., BQ796xx) from main BMS microcontroller in 800 V battery packs. IC Role / Device Role / Timing Role: Transfers analog monitor data and balancing commands across high-potential barriers with AEC-Q100 qualification. Use Value: Supports functional safety ASIL-B decomposition by providing certified isolation for voltage measurement paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4401BRWZ | 4-channel, 100 Mbps, 5000 VRMS, 15 ns propagation delay, no deglitch filter | Lacks 36 ns input filter and 6000 VRMS rating-unsuitable for 800 V EV systems requiring reinforced insulation | Choose ADUM4401BRWZ only for cost-sensitive 3.3 V industrial PLCs where 5000 VRMS suffices |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, 25 ns propagation delay, integrated LDO on side B | Lower speed and isolation rating; LDO adds quiescent current-limits use in high-frequency motor control | Select ISO6741FDWR when side-B power regulation is needed and data rate ≤50 Mbps is acceptable |
Compared with ADUM4401BRWZ and ISO6741FDWR, SI86S640BB-IU delivers higher isolation (6000 vs. 5000 VRMS), faster timing (10 ns vs. ≥15 ns), and built-in 36 ns noise filtering-making it the only option qualified for AEC-Q100 and IEC 60747-17 in high-voltage EV traction and charging subsystems.
Availability
SI86S640BB-IU is available at Aetrix Electronics and suitable for industrial motor control, EV onboard chargers, and medical isolated ADC interfaces requiring stable component supply across extended product lifecycles.
Supply support for SI86S640BB-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 for wireless, automotive, and industrial markets.
The Si86S6xx family was designed specifically for high-reliability galvanic isolation in safety-critical systems-including EV powertrain, medical imaging, and industrial automation-where certified reinforced insulation and ultra-low propagation delay are mandatory.
FAQ
What is the isolation voltage rating of the SI86S640BB-IU?
The SI86S640BB-IU has a certified 6000 VRMS isolation rating per UL 1577 for 1 minute, achieved in its WB SOIC-16 package. This rating is validated for reinforced insulation per IEC 60747-17 and supports applications in 800 VDC battery systems and 1000 VAC industrial buses. The device maintains this rating across its full operating temperature range (–40 to 125 °C).
Does the SI86S640BB-IU support fail-safe operation during power loss?
Yes, the SI86S640BB-IU is factory-configured with default-low fail-safe mode. When the input-side supply (VDD1) is unpowered but the output-side supply (VDD2) remains active, all B1–B4 outputs are held low. This behavior is defined in Table 4 of the datasheet and ensures predictable state in fault conditions such as MCU reset or power sequencing failure.
What is the propagation delay specification for SI86S640BB-IU?
The SI86S640BB-IU has a typical propagation delay of 10 ns, with guaranteed maximum values specified across temperature and voltage. This low latency enables tight-tolerance timing in high-speed control loops-for example, maintaining <20 ns channel-to-channel skew in 3-phase inverter gate drive isolation. Delay variation (pulse width distortion) is limited to 3.5 ns typical.
Can SI86S640BB-IU be used in automotive applications?
Yes, SI86S640BB-IU is AEC-Q100 qualified for Grade 1 (–40 to 125 °C) operation and supports automotive applications including onboard chargers, battery management systems, and traction inverters. It carries IMDS/CAMDS compliance documentation and AIAG-compliant PPAP support-meeting Tier-1 supplier requirements for EV power electronics.
Does SI86S640BB-IU include an input noise filter?
Yes, SI86S640BB-IU includes a factory-enabled 36 ns input deglitch filter on all A1–A4 channels. This filter blocks noise pulses shorter than 36 ns-such as those induced by SiC switch ringing or ESD events-while adding only 36 ns fixed delay to valid signals. Filter presence is confirmed in the "Si86S64x" subsection of the datasheet's Feature Summary.
SI86S640BB-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:
- 4/0
- 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
SI86S640BB-IU FAQ
1.How can I place an order for SI86S640BB-IU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S640BB-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 SI86S640BB-IU reliable?
The price and inventory of SI86S640BB-IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S640BB-IU is usually 5 days.
3.What payment methods are accepted for SI86S640BB-IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S640BB-IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S640BB-IU?
SI86S640BB-IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S640BB-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 SI86S640BB-IU?
For technical support, including SI86S640BB-IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S640BB-IU requirements.
6.How does Aetrix verify that SI86S640BB-IU is sourced from the original manufacturer or authorized distributors?
All SI86S640BB-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 SI86S640BB-IU meets industry standards.
7.What is the process for return or replacement of SI86S640BB-IU?
All SI86S640BB-IU units undergo pre-shipment inspection (PSI). If there is an issue with SI86S640BB-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 SI86S640BB-IU part is unused and in its original packaging.
Return procedure for SI86S640BB-IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S640BB-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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