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SI8660BD-B-IS

SI8660BD-B-IS

Skyworks Solutions Inc.
General Purpose Digital Isolator 5000Vrms 6 Channel 150Mbps 35kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
Active10,020 in stock

Overview

The SI8660BD-B-IS is a high-performance, six-channel digital isolator providing 5000Vrms isolation using Skyworks' proprietary capacitive coupling technology. It supports data rates up to 150Mbps with high common-mode transient immunity (CMTI) of 35kV/us, ensuring reliable data integrity in electrically noisy environments. This unidirectional device is designed to replace optocouplers, offering superior reliability, smaller footprint, and lower power consumption.

Why Choose This Part

This device features industry-leading propagation delay and low skew, which is critical for synchronous multi-channel timing. It operates over a wide supply range of 2.5V to 5.5V and maintains low power consumption, typically 5.0mA on VDD1 and 18.3mA on VDD2 at 50MHz. The 5000Vrms isolation rating and wide SOIC-16 package meet stringent safety requirements for high-voltage barriers.

Applications

Industrial Automation Systems
Used to protect sensitive controllers from high-voltage transients in PLC and distributed control systems.
Isolated ADC/DAC Interfacing
Provides high-speed digital isolation for multi-channel data converters to maintain signal integrity.
Motor Control and Inverters
Isolates PWM control signals from high-power gate drivers to prevent ground loop noise.
Battery Management Systems (BMS)
Ensures safe communication between high-voltage battery stacks and low-voltage monitoring circuits.

Key Specifications

Type General Purpose
Data Rate 150Mbps
Technology Capacitive Coupling
Channel Type Unidirectional
Mounting Type Surface Mount
Isolated Power No
Package / Case 16-SOIC (0.295", 7.50mm Width)
Voltage - Supply 2.5V ~ 5.5V
Number of Channels 6
Voltage - Isolation 5000Vrms
Operating Temperature -40degC ~ 125degC
Inputs - Side 1/Side 2 6/0
Rise / Fall Time (Typ) 2.5ns, 2.5ns
Supplier Device Package 16-SOIC
Pulse Width Distortion (Max) 4.5ns
Propagation Delay tpLH / tpHL (Max) 13ns, 13ns
Common Mode Transient Immunity (Min) 35kV/us

Getting Started

When designing the PCB, place 0.1uF bypass capacitors as close as possible to the VDD1 and VDD2 pins to minimize high-frequency noise. Ensure the isolation gap beneath the SOIC-16 package is kept clear of any copper traces to maintain the 5000Vrms creepage and clearance specifications. For prototyping, look for SOIC-16 wide-body breakout boards or manufacturer-specific evaluation kits that provide pre-populated isolation barriers.

Also Consider

ADuM160N Analog Devices - Uses iCoupler transformer technology which may be preferred in certain EMI-sensitive designs.
SI8661BD-B-IS Skyworks Solutions Inc. - Identical family but provides a 5/1 channel direction split if bidirectional communication is required.