UPD4714ACY View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD4714ACY

RS-232 LINE DRIVER/RECEIVER

NEC => Renesas Technology 

BLOCK DIAGRAM/PIN CONFIGURATION (Top View)

µPD4714A

+10V

+

1

C3

2

+

C1

3

+5V

Bypass

capasitor

TTL/CMOS

INPUT

4

5

DIN1 6

DIN2 7

DIN3 8

VDD

C1+

VCC

C1–

GND

Output control DCON 9

ROUT1 10

TTL/CMOS

OUTPUT

ROUT2 11

ROUT3 12

ROUT4 13

ROUT5 14

DC - DC

converter

C4+ 28

GND 27

C4– 26

+

C4

+

C2

VSS 25

–10V

24 STBY Standby

300 Ω

300 Ω

300 Ω

5 kΩ

5 kΩ

5 kΩ

23 DOUT1

22 DOUT2

21 DOUT3

20 RIN1

19 RIN2

18 RIN3

17 RIN4

RS-232

OUTPUT

RS-232

INPUT

5 kΩ

5 kΩ

16 RIN5

15 RCON

Threshold control

* VDD and Vss are output pins of voltages internally boosted. Connecting a load directly to these pins is not

recommended.

** The standby pin is internally pulled down.

*** Use capacitors with a working voltage of 16 V or higher as C1 through C4. Insert a bypass capasitor about 0.1

to 1 µF between VCC pin to GND pin.

2

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