Skyworks Solutions Inc. SI8652EB-AU

Overview

SI8652EB-AU from Skyworks is a five-channel, ultra-low-power digital isolator with 3 input channels on VDD1 side and 2 output channels on VDD2 side, rated for 2.5 kVRMS isolation and operating across –40 to +125 °C. It supports DC–150 Mbps data rates, achieves <10 ns propagation delay, and features Schmitt-trigger inputs, tri-state outputs with enable control, and selectable high-default fail-safe mode.

For engineers reviewing the SI8652EB-AU datasheet, SI8652EB-AU pinout, SI8652EB-AU application, or SI8652EB-AU equivalent, key selection criteria include channel directionality (3:2), fail-safe default-high behavior, QSOP-16 package footprint, and compliance with UL, VDE, CSA, and CQC safety standards for reinforced insulation systems.

Technical Context

The SI8652EB-AU implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual enable inputs (EN1 on VDD1 side, EN2 on VDD2 side) independently control A4/A5 and B1/B2/B3 outputs, supporting multiplexing or synchronized shutdown.

Each channel delivers precise timing: ≤8 ns typical propagation delay, ≤0.5 ns channel-to-channel skew, and ≤2 ns propagation delay skew. Input thresholds (VT+ = 1.67 V typ, VT– = 1.23 V typ) with 0.44 V hysteresis ensure high noise immunity in industrial motor drives and battery management systems.

Key Specifications

Pinout & Package

SI8652EB-AU uses a RoHS-compliant QSOP-16 narrow-body package (5.3 mm × 10.2 mm, 1.0 mm height) with 0.635 mm lead pitch and JEDEC-standard land pattern.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital isolator applications.

Compared with ADUM141DARZ and ISO6742QDWR, SI8652EB-AU uniquely combines 150 Mbps speed, 3:2 channel asymmetry, 2.5 kVRMS QSOP-16 packaging, and factory-programmed high-fail-safe behavior-making it optimal for next-generation EV inverters and high-density PLC modules where timing precision and safe power-loss response are critical.

Availability

SI8652EB-AU is available at Aetrix Electronics and suitable for industrial automation systems, battery management systems, and motor control applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant automotive qualification.

Supply support for SI8652EB-AU 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.

The Si865x family was designed specifically for high-reliability industrial and automotive isolation-delivering ultra-low power, precise timing, and safety-certified reinforcement in compact surface-mount packages.

FAQ

What is the isolation rating and safety certification status of SI8652EB-AU?

SI8652EB-AU is certified for 2.5 kVRMS isolation per UL 1577, CSA Component Acceptance Notice 5A, VDE 0884-10, and CQC GB4943.1. It meets reinforced insulation requirements under IEC 60950-1 and IEC 62368-1, enabling use in medical and industrial equipment with up to 300 VRMS working voltage.

Does SI8652EB-AU require external components for basic operation?

Yes-SI8652EB-AU requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2, placed within 3 mm of the respective pins. No external pull-ups or level shifters are needed due to integrated Schmitt triggers and 2.5–5.5 V supply flexibility.

How does the fail-safe default-high feature of SI8652EB-AU behave during power loss?

When VDD1 is unpowered (0 V) and VDD2 remains active, SI8652EB-AU drives all outputs (B1–B3) to logic high-ensuring connected MOSFET gate drivers remain OFF and preventing unintended power stage activation. This behavior is factory-set and cannot be changed in-circuit.

Can SI8652EB-AU support bidirectional communication across the isolation barrier?

No-SI8652EB-AU has fixed unidirectional channel mapping: A1–A3 are inputs only (VDD1 side), B1–B3 are outputs only (VDD2 side). For bidirectional protocols like I²C, a separate isolator pair or a dedicated bidirectional device such as SI866x is required.

What is the maximum achievable data rate for each channel of SI8652EB-AU?

Each channel of SI8652EB-AU supports up to 150 Mbps DC-coupled data transmission-verified across –40 to +125 °C with 15 pF capacitive load. This enables full-speed operation of SPI Mode 3 interfaces, isolated CAN FD transceivers, and high-resolution encoder feedback links.