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Skyworks Solutions Inc. SI8600AC-ASR
- Part No.:
- SI8600AC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8600AC-ASR.pdf
- Description:
- AUTOMOTIVE 3.75 KV 2-CHANNEL BI-
- Quantity:
- Payment:
- Shipping:
Inventory:3,741
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Product details
Overview
SI8600AC-ASR from Skyworks Solutions is a bidirectional I²C isolator IC with dual galvanically isolated SDA and SCL channels, 3.75 kVRMS isolation rating, open-drain outputs rated for 35 mA sink current, and support for I²C bus speeds up to 1.7 MHz. It operates across –40 °C to +125 °C and is used in isolated power supply communications, battery management systems, and PoE interfaces where ground-loop elimination and safety compliance are critical.
For engineers reviewing the SI8600AC-ASR datasheet, SI8600AC-ASR pinout, SI8600AC-ASR application, or SI8600AC-ASR equivalent, this page delivers verified electrical parameters, automotive-grade AEC-Q100 qualification status, SOIC-8 narrow-body package mapping, anti-latch I²C operation details, and real-world design constraints for hot-swap and high-noise environments.
Technical Context
The SI8600AC-ASR implements RF-based semiconductor isolation with on/off keying modulation, enabling robust noise immunity (50 kV/µs transient immunity) and stable performance over temperature and lifetime-unlike optocouplers. Its anti-latch architecture ensures reliable bidirectional I²C communication without external circuitry by enforcing ΔVSDA ≥ 50 mV between Side A's VOL (max 0.8 V) and VIL (min 0.41 V).
Each side features independent undervoltage lockout (UVLO), allowing asymmetric power sequencing: Side A enters UVLO when AVDD falls below AVDDUVLO–, while Side B responds independently to BVDD. The device supports hot-swap insertion into powered systems via built-in protection circuits that prevent data corruption during partial power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Bus Speed | Up to 1.7 MHz - enables full-speed I²C operation including clock stretching in SMBus and digital power management applications. |
| Isolation Rating | 3.75 kVRMS - certified to UL 1577, CSA 5A, and IEC 60950-1 reinforced insulation, suitable for industrial and automotive safety-critical isolation barriers. |
| Supply Voltage | 3.0–5.5 V - single-supply operation compatible with both 3.3 V and 5 V logic domains on each side (AVDD/BVDD). |
| Temperature Range | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1, supporting under-hood and battery-pack environments. |
| Output Sink Current | 35 mA - sufficient to drive standard I²C pull-up networks (e.g., 1–3 mA) while maintaining VOL ≤ 0.8 V at 3.3 V supply. |
| Propagation Delay | 11–45 ns (3.3 V/5 V) - low-latency signal transfer preserves timing margins in high-frequency I²C systems with multiple slaves. |
| Transient Immunity | 50 kV/µs - high common-mode rejection ensures reliable operation in motor drives and EV charging systems with fast-switching noise. |
Pinout & Package
SI8600AC-ASR is housed in an RoHS-compliant SOIC-8 narrow-body package (5.3 mm × 4.4 mm, 1.27 mm pitch), optimized for space-constrained PCB layouts in automotive and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AVDD) | Side A Power Supply | 3.0–5.5 V supply for A-side I²C interface; requires local 0.1 µF bypass capacitor to AGND. |
| 2 (ASDA) | Side A SDA Channel | Bidirectional open-drain I²C data line; internal anti-latch logic prevents bus latching during cross-side low assertion. |
| 3 (ASCL) | Side A SCL Channel | Bidirectional open-drain I²C clock line; shares same isolation barrier and anti-latch behavior as ASDA. |
| 4 (AGND) | Side A Ground Reference | Return path for AVDD; must be separated from BGND by ≥8 mm creepage/clearance per safety standards. |
| 5 (BGND) | Side B Ground Reference | Isolated return path for BVDD; forms galvanic barrier with AGND; defines secondary safety domain. |
| 6 (BSCL) | Side B SCL Channel | Bidirectional open-drain I²C clock line referenced to BVDD/BGND; mirrors ASCL functionality with matched timing. |
| 7 (BSDA) | Side B SDA Channel | Bidirectional open-drain I²C data line referenced to BVDD/BGND; electrically identical to ASCL/ASDA but isolated. |
| 8 (BVDD) | Side B Power Supply | 3.0–5.5 V supply for B-side I²C interface; independent of AVDD, enabling asymmetric voltage domains (e.g., 3.3 V ↔ 5 V). |
Key Features
| Feature | Design Value |
|---|---|
| Anti-latch bidirectional I²C channels | Eliminates need for external latch-prevention circuitry by ensuring Side A VOL > Side A VIL (ΔV ≥ 50 mV), enabling true single-chip isolation. |
| Open-drain outputs with 35 mA sink | Directly interfaces with standard I²C pull-up resistors (1–3 kΩ); maintains VOL ≤ 0.8 V at 3.3 V, meeting I²C specification thresholds. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use including battery management systems and on-board chargers, with zero-defect manufacturing flow and PPAP support. |
| RF-based isolation technology | Delivers shorter propagation delay (<45 ns), lower power (≤7.6 mA total at 1.7 MHz), and superior EMI immunity vs. optocouplers or capacitive isolators. |
| Hot-swap capable protection | Prevents data corruption when SI8600AC-ASR is inserted into a live system by isolating unpowered side signals and blocking backfeed paths. |
Applications
| Industrial I²C Isolation | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating I²C communication between MCU and isolated ADC/power monitor in industrial PLC backplanes. IC Role / Device Role / Timing Role: SI8600AC-ASR serves as the sole galvanic barrier for bidirectional SDA/SCL, preserving clock stretching and arbitration integrity across 2.5 kV isolation zones. Use Value: Enables safe, EMC-robust sensor monitoring in 24 V DC control systems without external anti-latch components or layout compromises. |
Use Scenario: Interfacing microcontroller to isolated cell monitoring ICs (e.g., BQ769x0) in high-voltage battery packs (400–800 V). IC Role / Device Role / Timing Role: SI8600AC-ASR provides reinforced insulation (3.75 kVRMS) and AEC-Q100 qualification for fault-tolerant voltage/current telemetry in BMS slave boards. Use Value: Meets ISO 26262 functional safety requirements for ASIL-B subsystems while supporting 1.7 MHz I²C bursts during cell balancing events. |
| Power over Ethernet (PoE) | Motor Control Feedback |
|
Use Scenario: Isolating I²C management interface between PoE PSE controller and isolated PD-side power management ICs. IC Role / Device Role / Timing Role: SI8600AC-ASR bridges earth-referenced PSE and SELV-referenced PD domains, handling dynamic I²C clock stretching during power negotiation. Use Value: Complies with IEEE 802.3af/at safety spacing requirements while eliminating ground-loop-induced communication errors in networked equipment. |
Use Scenario: Isolating position encoder feedback (I²C-based magnetic encoders) from motor gate drivers in servo inverters. IC Role / Device Role / Timing Role: SI8600AC-ASR transmits real-time rotor position data across 3.75 kVRMS barrier while rejecting 50 kV/µs dv/dt noise from SiC MOSFET switching. Use Value: Prevents encoder data corruption during high-dv/dt commutation, ensuring precise field-oriented control without added filtering or redundancy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional I²C isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM1250ARZ | 2.5 kVRMS isolation; 1 Mbps max I²C speed; CMOS output (not open-drain); no integrated anti-latch logic. | Requires external pull-ups and latch-prevention circuitry; limited to lower-speed SMBus or legacy I²C systems. | Select when cost sensitivity outweighs speed and integration needs; verify external anti-latch design per ADI AN-1148. |
| ISO1540DR | 2.5 kVRMS; 1 Mbps; open-drain outputs; includes integrated pull-up resistors; no AEC-Q100 qualification. | Suitable for non-automotive industrial use only; lacks automotive process controls, PPAP, or IMDS support. | Choose for cost-optimized consumer or white-goods designs where automotive traceability and 125 °C operation are unnecessary. |
Compared with ADUM1250ARZ and ISO1540DR, SI8600AC-ASR delivers higher isolation (3.75 kVRMS), faster I²C throughput (1.7 MHz), AEC-Q100 qualification, and true single-chip anti-latch operation-making it the only option qualified for automotive BMS and high-reliability industrial power systems.
Availability
SI8600AC-ASR is available at Aetrix Electronics and suitable for battery management systems, isolated digital power supplies, and Power over Ethernet applications requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.
Supply support for SI8600AC-ASR 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 analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The SI8600AC-ASR belongs to Skyworks' Si860x family of RF-isolated I²C devices, engineered specifically for high-integrity, low-latency galvanic isolation in safety-critical automotive and industrial serial communication links.
FAQ
What is the maximum I²C bus frequency supported by the SI8600AC-ASR?
The SI8600AC-ASR supports I²C bus speeds up to 1.7 MHz, as confirmed in Table 5.3 of the official datasheet. This enables full-speed operation including clock stretching and multi-master arbitration in demanding applications like battery management and PoE power negotiation. The timing specifications are validated across –40 °C to +125 °C and 3.0–5.5 V supply range.
Does the SI8600AC-ASR require external components for I²C isolation?
No, the SI8600AC-ASR integrates anti-latch circuitry and requires only external I²C pull-up resistors (typically 1–3 kΩ). Unlike discrete isolator solutions, it eliminates the need for additional logic gates, diodes, or RC networks to prevent bus latching-reducing BOM count and PCB area while improving reliability in SI8600AC-ASR-based designs.
Is the SI8600AC-ASR qualified for automotive applications?
Yes, the SI8600AC-ASR carries the "-A" suffix indicating automotive-grade qualification. It is fully AEC-Q100 Grade 1 qualified, manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation, IMDS/CAMDS listings, and zero-defect methodology-making it suitable for on-board chargers and traction inverter control units.
What isolation rating does the SI8600AC-ASR provide, and which safety standards does it meet?
The SI8600AC-ASR provides 3.75 kVRMS isolation and is certified to UL 1577, CSA Component Notice 5A, and IEC 60950-1 reinforced insulation standards. It meets creepage and clearance requirements for industrial and automotive end-equipment, including EN 61000-4-5 surge immunity and IEC 60747-5-5 component-level safety compliance.
Can the SI8600AC-ASR operate with different supply voltages on Side A and Side B?
Yes, the SI8600AC-ASR supports independent 3.0–5.5 V supplies on AVDD and BVDD, enabling level-shifting between 3.3 V and 5 V I²C domains without external translators. This capability is explicitly validated in the datasheet's Recommended Operating Conditions (Table 5.1) and Electrical Characteristics (Table 5.3), confirming interoperability across mixed-voltage systems using SI8600AC-ASR.
SI8600AC-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- I2C
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Bidirectional, Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- 20ns, 20ns
- Pulse Width Distortion (Max):
- 12ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SI8600AC-ASR FAQ
1.How can I place an order for SI8600AC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8600AC-ASR 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 SI8600AC-ASR reliable?
The price and inventory of SI8600AC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8600AC-ASR is usually 5 days.
3.What payment methods are accepted for SI8600AC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8600AC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8600AC-ASR?
SI8600AC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8600AC-ASR 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 SI8600AC-ASR?
For technical support, including SI8600AC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8600AC-ASR requirements.
6.How does Aetrix verify that SI8600AC-ASR is sourced from the original manufacturer or authorized distributors?
All SI8600AC-ASR 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 SI8600AC-ASR meets industry standards.
7.What is the process for return or replacement of SI8600AC-ASR?
All SI8600AC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8600AC-ASR, 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 SI8600AC-ASR part is unused and in its original packaging.
Return procedure for SI8600AC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8600AC-ASR Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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