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UPD4722 数据表(PDF) 1 Page - NEC

部件名 UPD4722
功能描述  RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
Download  16 Pages
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制造商  NEC [NEC]
网页  http://www.nec.com/
标志 NEC - NEC

UPD4722 数据表(HTML) 1 Page - NEC

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©
1993
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD4722
Document No. S12199EJ3V0DS00 (3rd edition)
(Previous No. IC-3280)
Date Published January 1997 N
Printed in Japan
RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
The
µPD4722 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 4 driver circuits and 4 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 2 circuits are fixed at a high level.
ORDERING INFORMATION
Part number
Package
µPD4722GS-GJG
30-pin plastic SSOP (300 mil)


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