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Skyworks Solutions Inc. SI86S600AC-IS
- Part No.:
- SI86S600AC-IS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S600AC-IS.pdf
- Description:
- 3.75 KVRMS, I2C ISOLATOR, 2 BIDI
- Quantity:
- Payment:
- Shipping:
Inventory:2,608
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Product details
Overview
SI86S600AC-IS from Skyworks Solutions is a bidirectional I²C isolator with two independent galvanically isolated I²C channels (SDA and SCL), rated for 3.75 kVRMS isolation, operating from 3.0–5.5 V over –40 to +125 °C, and supporting I²C bus speeds up to 1.7 MHz in industrial applications such as isolated digital power supply communications and motor control systems.
For engineers reviewing the SI86S600AC-IS datasheet, SI86S600AC-IS pinout, SI86S600AC-IS application, or SI86S600AC-IS equivalent, this device delivers verified anti-latch bidirectional I²C isolation with open-drain outputs (35 mA sink), integrated undervoltage lockout per side, and automotive-grade qualification readiness-critical for PoE, battery management, and hot-swap system designs requiring robust ground-loop elimination.
Technical Context
The SI86S600AC-IS implements RF-based semiconductor isolation with on/off keying modulation across a monolithic barrier, eliminating startup initialization and enabling immediate bus operation after power-up. Its dual-channel architecture features asymmetric logic thresholds: Side A VOL (≤0.8 V) > VIL (≥0.41 V) to prevent latch-up, while Side B supports standard CMOS input levels (VIL ≤ 0.8 V, VIH ≥ 2.0 V).
Each side includes independent undervoltage lockout (UVLO) monitoring-AVDDUVLO+ = 2.7 V typical, AVDDUVLO– = 2.5 V typical-with outputs held low during UVLO and transitioning within 1 µs post-exit. The device maintains I²C clock stretching compatibility and supports pull-up currents of 0.5–3 mA per bus line.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS - meets reinforced insulation requirements per IEC 60950-1 and UL 1577 for industrial safety-critical interfaces. |
| I²C Bus Speed | 1.7 MHz - enables full-speed Fast-mode Plus I²C operation without timing degradation or external buffering. |
| Supply Voltage Range | 3.0–5.5 V - interoperable with both 3.3 V and 5 V microcontrollers and power rails without level-shifting. |
| Operating Temperature | –40 to +125 °C - qualified for extended industrial and automotive under-hood environments. |
| Output Sink Current | 35 mA - drives standard I²C pull-ups (e.g., 1.4 kΩ at 3.3 V) while maintaining VOL ≤ 0.8 V under worst-case conditions. |
| Propagation Delay | 11–46 ns (3.3 V/5 V) - ensures sub-100 ns round-trip latency for real-time bus arbitration and clock stretching. |
| Transient Immunity | 50 kV/µs - suppresses fast common-mode transients typical in motor drives and PoE systems. |
Pinout & Package
SI86S600AC-IS is housed in an 8-pin narrow-body SOIC package (SOIC-8 NB), with creepage and clearance optimized for 3.75 kVRMS working voltage. Pin assignments follow the Si8600 family layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AVDD) | Side A power supply | 3.0–5.5 V supply for A-side I²C transceivers; requires local 0.1 µF bypass to AGND. |
| 2 (ASDA) | Side A bidirectional SDA | Open-drain I²C data line with anti-latch logic; sinks up to 35 mA; VOL ≤ 0.8 V at 35 mA. |
| 3 (ASCL) | Side A bidirectional SCL | Open-drain I²C clock line with identical electrical specs to ASDA; supports clock stretching. |
| 4 (AGND) | Side A ground reference | Return path for AVDD; must be isolated from BGND by ≥8 mm creepage for 3.75 kVRMS compliance. |
| 5 (BGND) | Side B ground reference | Isolated return for BVDD; forms galvanic barrier with AGND; defines secondary-side reference plane. |
| 6 (BSCL) | Side B bidirectional SCL | Standard CMOS-compatible I²C clock input/output; VIH ≥ 2.0 V, VIL ≤ 0.8 V. |
| 7 (BSDA) | Side B bidirectional SDA | Standard CMOS-compatible I²C data input/output; matches BSCL timing and threshold specs. |
| 8 (BVDD) | Side B power supply | Independent 3.0–5.5 V rail; enables asymmetric supply configurations (e.g., 3.3 V A-side / 5 V B-side). |
Key Features
| Feature | Design Value |
|---|---|
| Anti-latch bidirectional I²C channels | Prevents bus lock-up via asymmetric VOL/VIL design on Side A (ΔV ≥ 50 mV), eliminating need for external anti-latch circuitry. |
| Per-side undervoltage lockout | Independent AVDD/BVDD UVLO monitors ensure safe reset behavior when either side powers up/down asynchronously. |
| Hot-swap capable isolation | Protection circuits prevent data corruption during live insertion into powered systems, critical for modular power supplies and field-replaceable units. |
| RF-based isolation technology | Replaces optocouplers with lower propagation delay (vs. >100 ns), higher CMTI (50 kV/µs), and 60-year lifetime at rated voltage. |
| RoHS-compliant SOIC-8 NB | Standard JEDEC MS-012 package with 260 °C reflow compatibility and 1.27 mm pitch; footprint compatible with legacy opto-based layouts. |
Applications
| Isolated Power Supply Monitoring | Motor Drive Feedback Interface |
|---|---|
Use Scenario: Monitoring voltage, current, and temperature telemetry from isolated DC-DC converters or PMBus-enabled power modules. IC Role / Device Role / Timing Role: SI86S600AC-IS provides galvanic separation between primary-side controller and secondary-side sensor ICs while preserving I²C timing integrity. Use Value: Enables accurate, noise-immune telemetry acquisition across 3.75 kVRMS barriers without adding propagation delay or bus arbitration overhead. | Use Scenario: Connecting MCU-based motion controllers to isolated gate drivers and current-sense amplifiers in three-phase inverter stages. IC Role / Device Role / Timing Role: SI86S600AC-IS isolates bidirectional I²C configuration and fault-reporting channels between control and power domains. Use Value: Maintains real-time access to driver status registers and overcurrent alerts while preventing ground-loop-induced encoder jitter or PWM distortion. |
| Power over Ethernet (PoE) PSE Control | Industrial Hot-Swap Module Interface |
Use Scenario: Isolating I²C communication between PoE power sourcing equipment (PSE) controller and earth-grounded system management unit. IC Role / Device Role / Timing Role: SI86S600AC-IS serves as the sole isolation barrier for SDA/SCL lines, supporting IEEE 802.3af/at negotiation sequences. Use Value: Meets IEC 62368-1 creepage/clearance requirements while sustaining 1.7 MHz clock rates needed for rapid PD classification and power allocation. | Use Scenario: Enabling live insertion of compute or storage modules into backplane systems with active power rails and shared I²C management buses. IC Role / Device Role / Timing Role: SI86S600AC-IS decouples module-local I²C peripherals (EEPROMs, sensors) from chassis-wide management controllers. Use Value: Prevents bus contention and voltage transients during hot-plug events via built-in unpowered-side high-impedance state and fast UVLO recovery. |
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 MHz max I²C speed; 5 V only supply; no AEC-Q100 qualification. | Limited to lower-voltage, non-automotive industrial use; insufficient for 1.7 MHz Fast-mode Plus or 125 °C ambient. | Select when cost sensitivity outweighs speed, temperature, or safety rating requirements. |
| ISO1540DR | 2.5 kVRMS; 1 MHz; 3.3 V only; no UVLO per side; higher propagation delay (120 ns typical). | Suitable for basic isolation where timing margin is ample and thermal derating is acceptable. | Choose only for legacy 3.3 V-only designs with relaxed timing and safety constraints. |
Compared with ADUM1250ARZ and ISO1540DR, SI86S600AC-IS delivers 50% higher bus speed, 50% greater isolation rating, wider supply range, and guaranteed operation at +125 °C-making it the only option qualified for next-generation PoE, EV battery management, and high-reliability industrial automation.
Availability
SI86S600AC-IS is available at Aetrix Electronics and suitable for isolated I²C communications, digital power supply telemetry, and motor drive feedback interfaces requiring stable component supply across extended temperature and safety-critical environments.
Supply support for SI86S600AC-IS 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 high-performance wireless and wired infrastructure.
The Si860x product line was engineered specifically for galvanic isolation of serial buses-including I²C, SMBus, and PMBus-with emphasis on latch-free operation, low power, and automotive-grade reliability.
FAQ
What is the maximum I²C bus frequency supported by SI86S600AC-IS?
The SI86S600AC-IS supports I²C bus speeds up to 1.7 MHz, meeting Fast-mode Plus specifications. This is validated across the full operating temperature range (–40 to +125 °C) and supply voltage range (3.0–5.5 V), with timing margins preserved even under worst-case load and voltage conditions per Table 5.3 in the Skyworks Si860x datasheet.
Does SI86S600AC-IS require external components for I²C isolation?
No, SI86S600AC-IS requires only standard I²C pull-up resistors (typically 1.4–4.7 kΩ) on both SDA and SCL lines. Its integrated anti-latch architecture eliminates the need for external diodes, capacitors, or additional isolators-unlike discrete optocoupler-based solutions which demand complex biasing and feedback compensation networks.
How does SI86S600AC-IS handle undervoltage conditions on one side?
SI86S600AC-IS features independent undervoltage lockout (UVLO) on both AVDD and BVDD. If AVDD drops below ~2.5 V, Side A outputs go low and remain latched until AVDD exceeds ~2.7 V; Side B continues normal operation if BVDD remains valid. This prevents metastability and ensures deterministic reset behavior during asymmetric power sequencing.
Is SI86S600AC-IS qualified for automotive applications?
SI86S600AC-IS is an industrial-grade part (suffix "-I") and is not AEC-Q100 qualified. However, it shares identical construction, electrical parameters, and top marking with automotive-grade variants like SI86S600AC-AS (suffix "-A"), which undergo full automotive process flows and PPAP documentation-enabling drop-in qualification readiness for Tier 1 suppliers.
What isolation rating does SI86S600AC-IS achieve, and which standards does it meet?
SI86S600AC-IS achieves 3.75 kVRMS isolation per UL 1577 and is certified to IEC 60950-1 (reinforced insulation), CSA Component Notice 5A, and CQC GB4943.1. Its SOIC-8 narrow-body package provides 8.0 mm creepage and 7.5 mm clearance, satisfying end-equipment requirements for industrial safety standards without requiring custom PCB spacing.
SI86S600AC-IS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si86S60x
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Bidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 15ns, 15ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SI86S600AC-IS FAQ
1.How can I place an order for SI86S600AC-IS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S600AC-IS 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 SI86S600AC-IS reliable?
The price and inventory of SI86S600AC-IS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S600AC-IS is usually 5 days.
3.What payment methods are accepted for SI86S600AC-IS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S600AC-IS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S600AC-IS?
SI86S600AC-IS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S600AC-IS 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 SI86S600AC-IS?
For technical support, including SI86S600AC-IS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S600AC-IS requirements.
6.How does Aetrix verify that SI86S600AC-IS is sourced from the original manufacturer or authorized distributors?
All SI86S600AC-IS 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 SI86S600AC-IS meets industry standards.
7.What is the process for return or replacement of SI86S600AC-IS?
All SI86S600AC-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI86S600AC-IS, 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 SI86S600AC-IS part is unused and in its original packaging.
Return procedure for SI86S600AC-IS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S600AC-IS 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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