UPD4721GS-GJG NEC, UPD4721GS-GJG Datasheet

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UPD4721GS-GJG

Manufacturer Part Number
UPD4721GS-GJG
Description
3.3V applicability RS-232 line driver/receiver
Manufacturer
NEC
Datasheet

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Document No.
(Previous No. IC-3279)
Date Published January 1997 N
Printed in Japan
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.
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 V
• By setting the standby pin to a low level (standby mode), circuit current can be reduced. At such times,
ORDERING INFORMATION
S12198EJ2V0DS00 (2nd edition)
The PD4721 is a high-breakdown voltage silicon gate CMOS line driver/receiver based on the EIA/TIA-232-
This IC incorporates 2 driver circuits and 2 receiver circuits. An RS-232 interface circuit can be easily
the driver output is in a high-impedance state.
PD4721GS-GJG
Part number
RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
20-pin plastic SSOP (300 mil)
DATA SHEET
Package
MOS INTEGRATED CIRCUIT
CHA
pin)
P D 4 7 2 1
©
1993

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UPD4721GS-GJG Summary of contents

Page 1

... E standard. The internal DC/DC converter can switch between multiple voltages, realizing the allowing it to operate with a single +3 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 • ...

Page 2

... The pull-up resistors at driver input are active resistors GND 19 1 – – STBY 5 – Note 4 300 14 D 300 5 5 not necessary. 5 PD4721 + –10 V CHA OUT1 OUT2 IN1 IN2 and GND. CC ...

Page 3

Truth Table Driver STBY OUT L Z Standby mode (DC/DC converter is stopped Space level output Mark level output Receiver STBY OUT L H Standby mode (DC/DC converter ...

Page 4

ABSOLUTE MAXIMUM RATINGS (T A Parameter Supply Voltage ( CHA Supply Voltage ( CHA Driver Input Voltage Receiver Input Voltage Control Input Voltage (STBY CHA Driver Output Voltage Receiver Output Voltage Input Current (D ...

Page 5

ELECTRICAL SPECIFICATIONS (TOTAL) (Unless otherwise specified – Parameter Symbol V CC STBY = H Circuit Current I CC1 V CC STBY = Circuit Current I CC2 V CC ...

Page 6

ELECTRICAL SPECIFICATIONS (DRIVER) (Unless otherwise specified – mode (unless otherwise specified, V Parameter Symbol Low-Level Input Voltage V IL High-Level Input Voltage V IH Low-Level Input Current I IL High-Level Input ...

Page 7

V mode (Unless otherwise specified, V Parameter Symbol Low-Level Input Voltage V IL High-Level Input Voltage V IH Low-Level Input Current I IL High-Level Input Current I IH Output Voltage V DO Output Short-Circuit Current I SC Note 9 ...

Page 8

Note 10. Measuring point V CC STBY OUT – Driver outputs are indefinite during transition time (t Note 11. Measuring point 3 High-impedance D ...

Page 9

ELECTRICAL SPECIFICATIONS (RECEIVER) (Unless otherwise specified 3 Parameter Symbol Low-Level Output Voltage V OL1 High-Level Output Voltage V OH1 Low-Level Output Voltage V OL2 High-Level Output Voltage V OH2 Propagation Delay Time t ...

Page 10

Note 13. Measuring point + – OUT V OL Note 14. Measuring point + – OUT V OL Note 15. Measuring point ...

Page 11

... Receiver outputs are indefinite during reset release time (t Note 17. Measuring point OUT V OL Receiver outputs are indefinite during reset release time (t REFERENCE MATERIAL • IC PACKAGE MANUAL (C10943X) • NEC SEMICONDUCTOR DEVICE RELIABILITY/QUALITY (IEI-1212) 3 PRA 0 PRA 4 PRA 0 PRA PD4721 11 ...

Page 12

RECOMMENDED SOLDERING CONDITIONS The following conditions (See table below) must be met when soldering this product. Please consult with our sales offices in case other soldering process is used case soldering is done under different conditions. TYPES OF ...

Page 13

PACKAGE DRAWINGS 20 PIN PLASTIC SHRINK SOP (300 mil NOTE Each lead centerline is located within 0.12 mm (0.005 inch) of its true position (T.P.) at maximum material condition. 11 detail of ...

Page 14

PD4721 ...

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PD4721 15 ...

Page 16

... Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact an NEC sales representative in advance ...

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