How to Improve Speed and Reliability of Isolated Digital Inputs in Motor Drives

Texas Instruments

Published Date: 16 Dec 2017


Digital Input receivers are used in AC and servo motor control to interface various 24-V signals to the control module of the drive. These signals include inputs from field sensors and switches, position and speed feedback encoded as 24-V signals, clock or PWM inputs for speed control, and emergency stop signals, such as Safe Torque Off (STO). Isolation is used to manage ground potential differences.


Part Number Name Companion Part
SN65HVS880 SN65HVS880 Buy Datasheet
ISO1211D ISO1211D Buy Datasheet
ISO1211DR ISO1211DR Buy Datasheet
ISO1212DBQ ISO1212DBQ Buy Datasheet
ISO1212DBQR ISO1212DBQR Buy Datasheet