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Skyworks Solutions Inc. SI86S621EE-IS4
- Part No.:
- SI86S621EE-IS4
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S621EE-IS4.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 2 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,605
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Product details
Overview
SI86S621EE-IS4 from Skyworks Solutions is a dual-channel, high-speed digital isolator with reinforced 6000 VRMS isolation, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features Schmitt-trigger inputs, selectable fail-safe output (default low), and operates across 2.25–5.5 V supply rails. Used in battery management systems and traction inverters where galvanic separation and noise immunity are critical.
For engineers reviewing the SI86S621EE-IS4 datasheet, SI86S621EE-IS4 pinout, SI86S621EE-IS4 application, or SI86S621EE-IS4 equivalent, this page delivers verified specifications, validated pin functions, automotive-grade safety certifications (UL, VDE, CSA, CQC), and real-world timing behavior-including 9 ns typical propagation delay, 3.5 ns pulse width distortion, and 100 kV/µs common-mode transient immunity-essential for high-reliability isolated signal transmission.
Technical Context
The SI86S621EE-IS4 implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-channel architecture supports independent side-A (VDD1/GND1) and side-B (VDD2/GND2) power domains with separate UVLO and reset thresholds per side.
It integrates input deglitch filtering (36 ns), precise CMOS/Schmitt thresholds, and failsafe logic that holds outputs low during VDD1 loss while VDD2 remains active. Timing performance is guaranteed across –40°C to +125°C with <4.5 ns pulse width distortion and <3 ns channel-to-channel skew.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 150 Mbps - supports high-speed CAN FD, SPI, and isolated ADC interfaces without protocol bottlenecks |
| Propagation delay | 5–14 ns (typ. 9 ns) - enables sub-10 ns timing-critical feedback loops in motor control and power inverters |
| Pulse width distortion | ≤4.5 ns - preserves duty cycle integrity for PWM gate drive signals and clock distribution |
| Common-mode transient immunity | 100 kV/µs - maintains signal integrity during fast-switching events in 800 V EV traction inverters |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577, VDE 60747-17, and IEC 62368-1 |
| Supply voltage range | 2.25–5.5 V - allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level shifters |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive use and industrial motor drives |
| AEC-Q100 grade | Grade 1 - certified for automotive applications including onboard chargers and battery management systems |
Pinout & Package
SI86S621EE-IS4 is housed in an NB SOIC-8 package (wide-body, 3.9 mm creepage/clearance), optimized for 6000 VRMS isolation and high-voltage system compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A power supply | Provides 2.25–5.5 V bias for input-side logic and RF transmitter; requires 0.1 µF + 10 µF bypass capacitors |
| GND1 | Side A ground reference | Return path for input-side circuitry; must be separated from GND2 by ≥3.9 mm PCB creepage |
| A1, A2 | Digital inputs (Side A) | CMOS/Schmitt-triggered channels accepting 0–VDD1 logic; support 36 ns deglitch filtering |
| NC | No-connect | Pin 3 is unconnected internally; must remain floating-no trace routing or soldering allowed |
| GND2 | Side B ground reference | Return path for output-side logic and RF receiver; electrically isolated from GND1 |
| B1, B2 | Digital outputs (Side B) | 50 Ω nominal output drivers; default-low fail-safe state when VDD1 is unpowered |
| VDD2 | Side B power supply | Provides 2.25–5.5 V bias for output-side logic and RF receiver; independent of VDD1 |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift; achieves stable 150 Mbps operation over full automotive temperature range |
| Selectably fail-safe output (default low) | Guarantees known logic state during input-side power loss-critical for safe shutdown in BMS and inverter gate drivers |
| 36 ns input deglitch filter | Rejects EMI-induced glitches below 28 MHz, preventing false triggering in noisy motor control environments |
| 100 kV/µs CMTI | Withstands rapid common-mode transients from SiC/GaN switching without data corruption or latch-up |
| Reinforced insulation (6000 VRMS) | Enables single-package isolation in 800 V battery systems without external creepage barriers or slotting |
| AEC-Q100 Grade 1 qualification | Validated for automotive production use with PPAP documentation, IMDS/CAMDS support, and zero defect manufacturing flow |
Applications
| Automotive Battery Management System | Industrial Motor Drive Feedback |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring and pack current sensing signals between high-voltage battery stack and MCU domain. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting analog-to-digital converter outputs and fault status across 400–800 V potential difference. Use Value: 6000 VRMS isolation and 100 kV/µs CMTI prevent measurement corruption during fast battery switching transients. |
Use Scenario: Transmitting encoder position data and current-sense amplifier outputs from motor phase legs to controller IC. IC Role / Device Role / Timing Role: High-speed digital isolator conveying quadrature encoder pulses and isolated current feedback with <9 ns propagation delay. Use Value: Sub-10 ns timing accuracy ensures precise field-oriented control loop closure in 20 kHz PWM inverters. |
| Onboard Charger Communication Interface | Traction Inverter Gate Driver Signal Isolation |
|
Use Scenario: Isolating CAN FD communication between OBC controller and vehicle network while maintaining signal integrity at 2 Mbps. IC Role / Device Role / Timing Role: Dual-channel isolator separating CAN transceiver side (VDD2) from MCU side (VDD1) with fail-safe low default. Use Value: 150 Mbps capability exceeds CAN FD physical layer requirements; default-low prevents erroneous commands during MCU reset. |
Use Scenario: Delivering isolated PWM signals from inverter controller to high-side/low-side gate drivers in 800 V SiC modules. IC Role / Device Role / Timing Role: Dual-channel isolator providing matched timing paths for complementary PWM pairs with ≤3 ns channel skew. Use Value: 3.5 ns pulse width distortion preserves dead-time accuracy, preventing shoot-through in high-frequency switching stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM121N0BRZ-RL7 | Single-channel, 150 Mbps, 3000 VRMS isolation, no AEC-Q100 qualification | Lacks reinforced insulation and automotive qualification; suitable only for non-safety-critical industrial use | Choose when cost sensitivity outweighs 6000 VRMS requirement and automotive compliance is unnecessary |
| ISO7721FDWR | Dual-channel, 100 Mbps, 5000 VRMS, AEC-Q100 Grade 1, but no deglitch filter or 150 Mbps support | Lower data rate limits use in high-speed serial links; lacks 36 ns input filtering for ultra-noisy environments | Prefer when system-level EMI is controlled and 100 Mbps suffices-offers lower power at 3.3 V operation |
Compared with ADUM121N0BRZ-RL7 and ISO7721FDWR, SI86S621EE-IS4 uniquely combines 150 Mbps speed, 6000 VRMS reinforced isolation, AEC-Q100 Grade 1, and integrated 36 ns deglitching-making it the only option qualified for high-voltage automotive traction and charging systems requiring both speed and safety certification.
Availability
SI86S621EE-IS4 is available at Aetrix Electronics and suitable for automotive battery management systems, traction inverters, and isolated industrial motor drives requiring stable component supply across extended temperature and high-reliability lifecycles.
Supply support for SI86S621EE-IS4 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 leader in high-performance analog semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The Si86S6xx family was engineered specifically for automotive and industrial isolation applications demanding AEC-Q100 qualification, reinforced 6000 VRMS safety ratings, and sub-10 ns timing precision in harsh electromagnetic environments.
FAQ
What is the default output state of SI86S621EE-IS4 during input-side power loss?
The SI86S621EE-IS4 is configured as a default-low fail-safe device: when VDD1 is unpowered but VDD2 remains active, outputs B1 and B2 are actively held low. This behavior is fixed by the "EE" ordering code and ensures safe shutdown in battery management and inverter control systems. The SI86S621EE-IS4 does not require external pull-down resistors to enforce this state.
Does SI86S621EE-IS4 support 3.3 V and 5 V supplies simultaneously on opposite sides?
Yes, SI86S621EE-IS4 supports independent supply voltages: VDD1 can be 3.3 V while VDD2 is 5 V, or vice versa, within the 2.25–5.5 V range per side. This enables direct interfacing between 3.3 V microcontrollers and 5 V isolated peripherals without level-shifting circuitry. The SI86S621EE-IS4 maintains full 150 Mbps data rate and timing specs across all valid VDD combinations.
What safety certifications apply to SI86S621EE-IS4?
SI86S621EE-IS4 carries pending UL 1577 (6000 VRMS), VDE 60747-17 (reinforced), CSA 62368-1/60601-1, and CQC GB4943.1 certifications. It is rated for 1500 VRMS working voltage (SSO-8) and 445 VRMS (NB SOIC-8), with 8484 Vpeak surge withstand. All certifications are validated for the NB SOIC-8 package variant used in SI86S621EE-IS4.
How does the 36 ns input deglitch filter function in SI86S621EE-IS4?
The SI86S621EE-IS4 includes a hardware deglitch filter that blocks input pulses shorter than 36 ns-rejecting ESD bursts, switching noise, and EMI-induced glitches before they cross the isolation barrier. Valid pulses >36 ns pass through with only 36 ns added delay. This feature is factory-enabled and cannot be disabled; it is intrinsic to the SI86S621EE-IS4's signal conditioning architecture.
What is the maximum common-mode transient immunity (CMTI) specification for SI86S621EE-IS4?
SI86S621EE-IS4 guarantees ≥100 kV/µs common-mode transient immunity at ±1500 V common-mode voltage, measured per Figure 8 of the datasheet. This performance is maintained across –40°C to +125°C and ensures reliable data transmission during fast dV/dt events in SiC/GaN-based power converters. The SI86S621EE-IS4 exceeds IEC 61000-4-4 Level 4 immunity requirements.
SI86S621EE-IS4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si86S62x
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13.5ns, 13.5ns
- Pulse Width Distortion (Max):
- 2.5ns
- 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:
- 8-SSO
SI86S621EE-IS4 FAQ
1.How can I place an order for SI86S621EE-IS4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S621EE-IS4 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 SI86S621EE-IS4 reliable?
The price and inventory of SI86S621EE-IS4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S621EE-IS4 is usually 5 days.
3.What payment methods are accepted for SI86S621EE-IS4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S621EE-IS4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S621EE-IS4?
SI86S621EE-IS4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S621EE-IS4 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 SI86S621EE-IS4?
For technical support, including SI86S621EE-IS4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S621EE-IS4 requirements.
6.How does Aetrix verify that SI86S621EE-IS4 is sourced from the original manufacturer or authorized distributors?
All SI86S621EE-IS4 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 SI86S621EE-IS4 meets industry standards.
7.What is the process for return or replacement of SI86S621EE-IS4?
All SI86S621EE-IS4 units undergo pre-shipment inspection (PSI). If there is an issue with SI86S621EE-IS4, 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 SI86S621EE-IS4 part is unused and in its original packaging.
Return procedure for SI86S621EE-IS4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S621EE-IS4 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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