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

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

Applications

Isolated 20 mA current

Loop receiver in:

   Computer peripherals

   Industrial control equipment

   Data communications equipment