UPD4721 Datasheet (NEC) - RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V

UPD4721, RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V

DATA SHEET MOS INTEGRATED CIRCUIT µP D 4 7 2 1 RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V The µPD4721 is a high-breakdown voltage silicon gate CMOS line driver/receiver based on the EIA/TIA-232E standard.

The internal DC/DC converter can switch between multiple voltages, realizing the allowing it to operate with a single +3.3 V or +5 V power supply.

It also provides standby function.

This IC incorporates 2 driver circuits and 2 receiver circuits.

An RS-232 interface circuit can be easily confi

UPD4721 Features

* Conforms to EIA/TIA-232-E (former name, RS-232C) standards

* Selectable +3.3 V/+5 V single power supply (selected by VCHA pin)

* By setting the standby pin to a low level (standby mode), circuit current can be reduced. At such times, the driver output is in a high-impedance