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What is UPD4721GS-GJG?

This electronic component, produced by the manufacturer "NEC", performs the same function as "RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V".


UPD4721GS-GJG Datasheet PDF - NEC

Part Number UPD4721GS-GJG
Description RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
Manufacturers NEC 
Logo NEC Logo 


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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD4721
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-232-
E 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
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.
ORDERING INFORMATION
Part number
µPD4721GS-GJG
Package
20-pin plastic SSOP (300 mil)
Document No. S12198EJ2V0DS00 (2nd edition)
(Previous No. IC-3279)
Date Published January 1997 N
Printed in Japan
© 1993

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UPD4721GS-GJG equivalent
µPD4721
ELECTRICAL SPECIFICATIONS (TOTAL)
(Unless otherwise specified, TA = –40 to +85 °C, C1 to C5 = 1 µF)
Parameter
Symbol
Conditions
Circuit Current
VCC = +3.3 V, No load, RIN pin OPEN,
STBY = H
ICC1
VCC = +5.0 V, No load, RIN pin OPEN,
STBY = H
Circuit Current
Circuit Current at Standby
VCC = +3.3 V, RL = 3 k(DOUT), DIN = GND,
RIN, ROUT pin OPEN, STBY = H
ICC2
VCC = +5.0 V,RL = 3 k(DOUT), DIN = GND,
RIN, ROUT pin OPEN, STBY = H
VCC = +3.3 V, No load, DIN and RIN
pins are OPEN, STBY = L, TA = 25 °C
VCC = +3.3 V, No load, DIN and RIN
pins are OPEN, STBY = L
ICC3
VCC = +5.0 V, No load, DIN and RIN
pins are OPEN, STBY = L, TA = 25 °C
VCC = +5.0 V, No load, DIN and RIN
pins are OPEN, STBY = L
High-Level Input Voltage
VIH VCC = +3.0 to +5.5 V, STBY, VCHA pin
Low-Level Input Voltage
VIL VCC = +3.0 to +5.5 V, STBY, VCHA pin
High-Level Input Current
IIH VCC = +5.5 V, VI = +5.5 V, STBY, VCHA pin
Low-Level Input Current
IIL VCC = +5.5 V, VI = 0 V, STBY, VCHA pin
Input Capacitance
STBY — VCHA Time
VCHA — STBY Time
STBY — VCC Time
VCC — STBY Time
Driver input and receiver input
VCC = +3.3 V, for GND, f = 1 MHz
CIN
Driver input and receiver input
VCC = +5.0 V, for GND, f = 1 MHz
tSCH VCC = +3.0 to +5.5 V, STBY ↓ → VCHA, Note 8
tCHS VCC = +3.0 to +5.5 V, VCHA STBY , Note 8
tSC VCC = +3.0 to +5.5 V, STBY ↓ → VCC, Note 8
tCS VCC = +3.0 to +5.5 V, VCC STBY , Note 8
* The TYP. values are for reference at TA = 25 °C.
MIN.
2.4
1
1
1
1
TYP. MAX.
6.5 13
4.5 9
19 24
14 18
13
5
25
10
0.6
1
–1
10
10
Unit
mA
mA
mA
mA
µA
µA
µA
µA
V
V
µA
µA
pF
pF
µs
µs
µs
µs
Note 8. Measuring point
5V
STBY
0V
0.6 V
tSCH
3.3 V
0.6 V
tCHS
3.3 V
VCHA
0V
2.4 V
0.6 V
tSC tCS
5V
VCC
3.3 V
4.5 V
3.6 V
0.6 V
tSCH
0.6 V
tCHS
2.4 V
0.6 V
tSC
tCS
4.5 V
3.6 V
5


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Featured Datasheets

Part NumberDescriptionMFRS
UPD4721GS-GJGThe function is RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V. NECNEC

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