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Skyworks Solutions Inc. SI8602AB-B-ISR
- Part No.:
- SI8602AB-B-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8602AB-B-ISR.pdf
- Description:
- DGTL ISOL 2500VRMS 2CH I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,014
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Product details
Overview
SI8602AB-B-ISR from Skyworks Solutions is a bidirectional I²C isolator with one bidirectional SDA channel and one unidirectional SCL channel, supporting up to 1.7 MHz I²C bus speed, 35 mA open-drain sink capability, and 2.5 kVRMS galvanic isolation in an SOIC-8 narrow-body package. It enables isolated communication between microcontrollers and sensors in battery management systems where ground-loop elimination and hot-swap robustness are critical.
For engineers reviewing the SI8602AB-B-ISR datasheet, SI8602AB-B-ISR pinout, SI8602AB-B-ISR application, or SI8602AB-B-ISR equivalent, key selection criteria include its asymmetric I²C channel architecture (bidirectional SDA + unidirectional SCL), 3.0–5.5 V dual-supply operation, –40 to +125 °C temperature range, and compliance with UL, CSA, and VDE reinforced insulation standards for industrial and automotive use.
Technical Context
The SI8602AB-B-ISR implements RF-based galvanic isolation using on/off keying modulation across a semiconductor barrier, eliminating startup initialization and providing inherent noise immunity. Its anti-latch circuitry ensures stable bidirectional I²C operation by enforcing ΔVSDA ≥ 50 mV between Side A's VOL (0.54 V typ.) and VIL (0.41 V min.), preventing bus lock-up during clock stretching.
Side A handles bidirectional SDA with open-drain logic and 35 mA sink, while Side B provides unidirectional SCL with CMOS-compatible input thresholds (VT+ = 1.67 V typ., VT– = 1.23 V typ.) and 10 Mbps data rate support. Undervoltage lockout operates independently per side (AVDD/BVDD), ensuring safe power sequencing in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Bus Speed | Up to 1.7 MHz - supports standard/fast-mode Plus I²C without external anti-latch components. |
| Isolation Rating | 2.5 kVRMS - meets reinforced insulation requirements per UL 1577, CSA 5A, and IEC 60950-1. |
| Supply Voltage Range | 3.0–5.5 V per side - enables interoperability with 3.3 V and 5 V domains without level shifters. |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive and industrial embedded environments. |
| Propagation Delay | 11–45 ns (3.3/5 V) - ensures timing margin for high-speed I²C with minimal bus skew. |
| Input/Output Logic Levels | Side A: VOL ≤ 0.8 V @ 35 mA, VIL ≤ 0.41 V; Side B: VIH ≥ 2.0 V, VIL ≤ 0.8 V - guarantees reliable interfacing with standard I²C peripherals. |
| Transient Immunity | 50 kV/µs - suppresses fast common-mode transients in noisy motor control or PoE systems. |
Pinout & Package
SI8602AB-B-ISR is housed in an 8-pin narrow-body SOIC package (5.3 mm × 4.4 mm, 1.27 mm pitch) with creepage/clearance ≥ 5.5 mm, compliant with RoHS and JEDEC reflow Class 3 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ASDA) | Side A bidirectional SDA | Open-drain I²C data line with 35 mA sink; connects to master/slave SDA on isolated side A. |
| 2 (ASCL) | Side A unidirectional SCL input | CMOS input accepting 1.67 V typical threshold; receives clock from Side B only. |
| 3 (AGND) | Side A ground reference | Return path for AVDD; must be separated from BGND by isolation barrier. |
| 4 (AVDD) | Side A supply voltage | 3.0–5.5 V power for Side A circuitry; requires 0.1 µF local bypass to AGND. |
| 5 (BVDD) | Side B supply voltage | 3.0–5.5 V power for Side B circuitry; independent of AVDD for dual-domain operation. |
| 6 (BGND) | Side B ground reference | Return path for BVDD; electrically isolated from AGND to maintain galvanic separation. |
| 7 (BSCL) | Side B unidirectional SCL output | CMOS output driving clock to Side A; supports 10 Mbps max data rate. |
| 8 (BSDA) | Side B bidirectional SDA | Open-drain I²C data line with 35 mA sink; connects to master/slave SDA on isolated side B. |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetric I²C channel architecture | One bidirectional SDA + one unidirectional SCL eliminates need for external anti-latch logic or discrete isolators. |
| Independent undervoltage lockout (UVLO) | Per-side UVLO (AVDD/BVDD) prevents metastable outputs during power sequencing or brownout events. |
| Hot-swap protection | Internal circuitry prevents data corruption when inserting powered SI8602AB-B-ISR into live systems. |
| RF isolation technology | Proprietary RF modulation delivers shorter propagation delay (<45 ns) and lower EMI susceptibility vs. optocouplers. |
| Reinforced safety certification | UL 1577, CSA 5A, VDE 0884-10 (reinforced), and IEC 60950-1 compliance enable end-equipment certification. |
Applications
| Battery Management Systems (BMS) | Power over Ethernet (PoE) Controllers |
|---|---|
|
Use Scenario: Isolating cell monitor ICs from host MCU across high-voltage battery stacks (e.g., 400–800 V EV packs). IC Role / Device Role / Timing Role: SI8602AB-B-ISR acts as a galvanically isolated I²C bridge, enabling safe telemetry readout while blocking ground loops and fault currents. Use Value: Enables direct connection of 3.3 V MCU to 5 V sensor domain with 2.5 kVRMS withstand voltage and AEC-Q100 qualification for automotive BMS. |
Use Scenario: Separating PoE power sourcing equipment (PSE) controller from isolated PD-side monitoring circuits. IC Role / Device Role / Timing Role: SI8602AB-B-ISR isolates SMBus communication between PSE and powered device, maintaining I²C clock stretching for dynamic power negotiation. Use Value: Supports 1.7 MHz I²C speed and hot-swap insertion without bus latch-up, meeting IEEE 802.3af/at timing and safety requirements. |
| Motor Control Gate Drivers | Industrial PLC I/O Modules |
|
Use Scenario: Communicating fault status and configuration parameters from isolated gate driver ICs to main controller in inverters. IC Role / Device Role / Timing Role: SI8602AB-B-ISR serves as a robust I²C isolator for real-time diagnostics, handling 50 kV/µs transients near IGBT switching nodes. Use Value: Delivers 125 °C operation and transient immunity sufficient for harsh motor drive environments without derating. |
Use Scenario: Isolating fieldbus I²C peripherals (e.g., temperature sensors, ADCs) from backplane controller in modular PLC racks. IC Role / Device Role / Timing Role: SI8602AB-B-ISR provides galvanic separation between SELV field-side and 24 V control-side domains. Use Value: Meets IEC 61000-4-5 surge immunity and reinforced insulation requirements for industrial automation safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM1250ARZ | Two unidirectional channels; no native I²C anti-latch; requires external pull-ups and logic for bidirectional SDA. | Limited to low-frequency I²C (<400 kHz); not rated for 125 °C operation or automotive AEC-Q100. | Choose ADUM1250ARZ only if system uses discrete anti-latch design and operates below 85 °C. |
| ISO1540DR | True bidirectional I²C isolator with integrated pull-ups; 1.0 kVRMS isolation; SOIC-8 package. | Lower isolation rating (1.0 vs. 2.5 kVRMS); no AEC-Q100 qualification; max 1 MHz bus speed. | Prefer ISO1540DR for cost-sensitive consumer applications where 1.0 kVRMS suffices and 125 °C operation is unnecessary. |
Compared with ADUM1250ARZ and ISO1540DR, SI8602AB-B-ISR uniquely combines 2.5 kVRMS reinforced isolation, 1.7 MHz I²C support, AEC-Q100 qualification, and single-chip anti-latch functionality-making it the only option qualified for automotive BMS and industrial motor drives requiring full safety certification.
Availability
SI8602AB-B-ISR is available at Aetrix Electronics and suitable for battery management systems, Power over Ethernet controllers, motor control gate drivers, and industrial PLC I/O modules requiring stable component supply across automotive and industrial lifecycles.
Supply support for SI8602AB-B-ISR 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 wireless, automotive, and industrial markets.
The SI860x family was designed specifically to replace optocouplers in I²C/SMBus isolation applications, delivering higher speed, lower power, smaller footprint, and superior reliability across automotive and industrial temperature ranges.
FAQ
What is the maximum I²C bus frequency supported by the SI8602AB-B-ISR?
The SI8602AB-B-ISR supports a maximum I²C bus frequency of 1.7 MHz, enabling compatibility with fast-mode Plus I²C specifications. This performance is achieved without external anti-latch circuitry due to its integrated asymmetric channel architecture-bidirectional SDA and unidirectional SCL-which maintains signal integrity and timing margins across the full operating temperature range of –40 to +125 °C. The SI8602AB-B-ISR achieves this while consuming only 2.5–3.8 mA per side at 1.7 MHz.
Does the SI8602AB-B-ISR require external pull-up resistors on the I²C bus lines?
Yes, the SI8602AB-B-ISR requires external pull-up resistors on both SDA and SCL lines, as its open-drain outputs rely on external termination to establish logic-high levels. Recommended values range from 0.5 mA to 3 mA pull-up strength (e.g., 3 kΩ at 3.3 V), which ensures proper anti-latch margin (ΔV ≥ 50 mV) and avoids violating input/output voltage thresholds across temperature. The SI8602AB-B-ISR datasheet specifies that weak pull-ups may cause VOL to approach VIL, risking bus latch-up.
Is the SI8602AB-B-ISR qualified for automotive applications?
Yes, the SI8602AB-B-ISR is AEC-Q100 qualified and built using automotive-specific manufacturing flows, including AIAG-compliant PPAP documentation and IMDS/CAMDS material reporting. Its –40 to +125 °C operating range, 2.5 kVRMS reinforced isolation, and 60-year lifetime at rated voltage make it suitable for on-board chargers, battery management systems, and traction inverters. The "AB" in the part number denotes automotive-grade construction, distinct from industrial-grade variants.
How does the SI8602AB-B-ISR prevent I²C bus latch-up during bidirectional communication?
The SI8602AB-B-ISR prevents I²C bus latch-up through dedicated anti-latch circuitry on Side A, which enforces a minimum 50 mV difference (ΔVSDA) between its output low voltage (VOL ≤ 0.8 V) and input threshold (VIL ≤ 0.41 V). This design ensures that a logic-low assertion on one side cannot propagate back and force the opposite side into a stable low state. Unlike discrete isolator solutions, the SI8602AB-B-ISR achieves this in a single monolithic package without external components.
What safety certifications does the SI8602AB-B-ISR hold?
The SI8602AB-B-ISR holds UL 1577 (2.5 kVRMS, 1 minute), CSA Component Acceptance Notice 5A, VDE 0884-10 (reinforced), and IEC 60950-1/61010-1/60601-1 reinforced insulation certifications. These approvals validate its suitability for end-equipment requiring double/reinforced insulation, including medical devices (IEC 60601-1), industrial controls (IEC 61010-1), and IT equipment (IEC 60950-1). All certifications apply directly to the SI8602AB-B-ISR device, not just the Si860x family.
SI8602AB-B-ISR 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:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/1
- Channel Type:
- Bidirectional, Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- -
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- -
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SI8602AB-B-ISR FAQ
1.How can I place an order for SI8602AB-B-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8602AB-B-ISR 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 SI8602AB-B-ISR reliable?
The price and inventory of SI8602AB-B-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8602AB-B-ISR is usually 5 days.
3.What payment methods are accepted for SI8602AB-B-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8602AB-B-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8602AB-B-ISR?
SI8602AB-B-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8602AB-B-ISR 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 SI8602AB-B-ISR?
For technical support, including SI8602AB-B-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8602AB-B-ISR requirements.
6.How does Aetrix verify that SI8602AB-B-ISR is sourced from the original manufacturer or authorized distributors?
All SI8602AB-B-ISR 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 SI8602AB-B-ISR meets industry standards.
7.What is the process for return or replacement of SI8602AB-B-ISR?
All SI8602AB-B-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8602AB-B-ISR, 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 SI8602AB-B-ISR part is unused and in its original packaging.
Return procedure for SI8602AB-B-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8602AB-B-ISR Tags
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ISO1212DBQR
Texas Instruments
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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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