UPD4723 Datasheet, PDF (1/16 Pages) NEC – RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD4723
RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
The µPD4723 is a high-breakdown voltage silicon gate CMOS line driver/receiver based on the EIA/TIA-232-E
standard. The internal DC/DC converter can switch between multiple voltages, allowing it to operate with a single
+3.3 V or +5 V power supply. It also provides standby function.
This IC incorporates 3 driver circuits and 3 receiver circuits. An RS-232 interface circuit can be easily configured
by connecting 5 capacitors externally.
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 state.
• Even in the standby mode, 2 receiver circuits can operate as inverters without hysteresis width.
The other circuit is fixed at a high level.
Ordering Information
Part number
µPD4723GS-GJG
Package
30-pin plastic SSOP (300 mil)
Document No. S12200EJ2V0DS00 (2nd edition)
(Previous No. IC-3284)
Date Published January 1997 N
Printed in Japan
©
1993