UPD4711BGS 查看數據表（PDF） - NEC => Renesas Technology

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产品描述 (功能)

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UPD4711BGS

RS-232 LINE DRIVER/RECEIVER

NEC => Renesas Technology 

BLOCK DIAGRAM/PIN CONFIGURATION (Top View)

µPD4711B

+10 V

+

C3

+

C1

1 VDD

2 C1+

3 VCC

+5 V

By pass

Capacitor

4 C1–

Standby STBY 5

TTL/CMOS

INPUT

DIN1 6

DIN2 7

TTL/CMOS

OUTPUT

ROUT1 8

ROUT2 9

10 GND

DC - DC

converter

C4+ 20

GND 19

C4– 18

+

C4

+

C2

VSS 17 –10 V

300 Ω

300 Ω

16 DCON Output contrtol

15 DOUT1

14 DOUT2

RS-232

OUTPUT

5.5 kΩ

5.5 kΩ

13 RIN1

12 RIN2

RS-232

INPUT

11 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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