DatasheetsPDF.com

UPD4723

NEC
Part Number UPD4723
Manufacturer NEC
Description RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
Published Apr 17, 2005
Detailed Description DATA SHEET MOS INTEGRATED CIRCUIT µPD4723 RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V The µPD4723 is a high-breakdown vo...
Datasheet PDF File UPD4723 PDF File

UPD4723
UPD4723


Overview
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 Package 30-pin plastic SSOP (300 mil) µPD4723GS-GJG Document No.
S12200EJ2V0DS00 (2nd edition) (Previous No.
IC-3284) Date Published January 1997 N Printed in Japan © 1993 µPD4723 BLOCK DIAGRAM/PIN CONFIGURATION (Top View) +10 V C3 + + 1 VDD C4+ 30 + C4 2 +3.
3 V or +5 V C1 C1+ GND 29 + C2 C4– 28 3 VCC 4 C1– C5+ VSS 27 –10 V 5 C5 + 6 26 STBY GND C5– Note 4 300 Ω 25 VCHA 7 24 EN DIN1 8 300 Ω 23 DOUT1 DIN2 9 300 Ω 22 DOUT2 DIN3 10 21 DOUT3 ROUT1 11 5.
5 kΩ ROUT2 12 5.
5 kΩ ROUT3 13 5.
5 kΩ NC 14 20 RIN1 19 RIN2 18 RIN3 17 NC NC 15 16 NC Note 1.
VDD and VSS are output pins stepped up internally.
These pins should not be loaded directly.
2.
Capacitors C1 to C5 with a breakdown voltage of 20 V or higher are recommended.
And it is recommended to insert the capacitor that is 0.
1 µF to 1 µF between VCC and GND.
3.
If VCHA is kept low level (in 5 V mode), capacitor C5 is not necessary.
4.
The pull-up resistors at driver input are active resistors.
2 µPD4723 Tr...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)