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Si8621BD-B-IS

Si8621BD-B-IS

MPN: SI8621BD-B-IS
Skyworks Solutions Inc.
General Purpose Digital Isolator 5000Vrms 2 Channel 150Mbps 35kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
NRND9,278 in stock
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Overview

The Si8621BD-B-IS is a high-performance, dual-channel digital isolator from Skyworks Solutions featuring 5000Vrms isolation. It supports data rates up to 150Mbps and utilizes capacitive coupling technology to provide reliable signal isolation with high immunity to common-mode transients of 35kV/us. This device is designed for industrial systems requiring robust galvanic isolation between two power domains.

Why Choose This Part

The component offers extremely low power consumption, drawing only 4.4mA VDD1 and 6.1mA VDD2 at 100Mbps. It features Schmitt trigger inputs for noise immunity and supports a wide supply voltage range from 2.5V to 5.5V, making it compatible with most modern logic levels.

Applications

Industrial Communication
Isolating UART, SPI, or I2C buses in industrial automation systems to prevent ground loop currents.
Isolated Switch Mode Power Supplies
Providing feedback signal isolation between the primary and secondary stages of high-voltage power converters.
Motor Control
Protecting low-voltage microcontrollers from high-voltage transients in motor drive inverters.
Medical Electronics
Ensuring patient and operator safety by providing 5kVrms reinforced isolation in diagnostic equipment.

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 2
Voltage - Isolation 5000Vrms
Operating Temperature -40degC ~ 125degC
Inputs - Side 1/Side 2 1/1
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

To evaluate this part, ensure proper PCB layout with adequate creepage and clearance distances as required by the 5kVrms rating. Place 0.1uF bypass capacitors as close as possible to the VDD1 and VDD2 pins. For prototyping, the Si86xxISO-KIT evaluation board can be used to test the timing and isolation characteristics.