UT232E

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 5

www.unisonic.com.tw

QW-R502-A19.c



APPLICATION INFORMATION

To operate from a single +5.0V supply, the UTC UT232A include charge pump voltage converters which can

allow it. To generate the RS-232 output levels these converters convert the +5.0V input power to the ±6.0V needed.

The current drain due to charge pump operation is considerably reduced with this power supplied externally. The

UTC UT232A can operate over the commercial, industrial and military temperature ranges.

1

3

0.1µF +

4

5

0.1µF +

Voltage Doubler

16

Voltage Inverter

14

11

400kΩ

7

10

12

9

TTL/CMOS

INPUTS

TTL/CMOS

OUTPUTS

5kΩ

0.1µF

0.1µF

+

2

6

RS-232

INPUTS

RS-232

OUTPUTS

+5V INPUT

V+

V-

13

8

GND

+

15

400kΩ

5kΩ

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.