Description

The HCPL-4200 optocoupler is designed to operate as a receiver in equipment using the 20 mA Current Loop. 20 mA current loop systems conventionally signal a logic high state by transmitting 20 mA of loop current (MARK), and signal a logic low state by allowing no more than a few milliamperes of loop current (SPACE). Optical cou

Specifications and Features

Data output compatible with LSTTL, TTL and CMOS
20 K Baud data rate at 1400 metres line length
Guaranteed On and Off thresholds
LED is protected from excess current
Input threshold hysteresis
Three-state output compatible with data buses
Internal shield for high Common Mode Rejection
Safety approval UL recognized -3750 V rms, for 1 minute CSA approved
Optically coupled 20 mA current loop transmitter, HCPL-4100, also available

Application Scenarios

Isolated 20 mA current loop receiver in:
- Computer peripherals
- Industrial control equipment
- Data communications equipment

Comparison