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).

Features

• Data Output Compatible with LSTTL, TTL and CMOS

• 20 K Baud Data Rate at 1400 Metres Line Length

• Guaranteed Performance over Temperature (0°C to 70°C)

• Guaranteed On and Off Thresholds

• LED is Protected from Excess Current

• Input Threshold Hysteresis

• Three-State Output Compat ible with Data Buses

• Internal Shield for High Common Mode Rejection

• Safety Approval UL Recognized -2500 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