UT232A

Preliminary

CMOS

UNISONICTECHNOLOGIESCO.,LTD

5 of 5

www.unisonic.com.tw

QW-R502-272.d

APPLICATION INFORMATION

To operate from a single +5V supply, the UTC UT232A include charge pump voltage converters which can allow

it. To generate the RS-232 output levels these converters convert the +5V input power to the ±10V needed. The

current drain due to charge pump operation is considerably reduced, typically to 400µA with this power supplied

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

Protection from Shorts to

±15V

Against shorts to ground, any other driver output, and V

connected to voltages higher than ±15V inadvertently, then the external protection is recommended to be provided.

While voltages exceeding ±15V ,for protection, two back-to-back zener diodes which is connected from each output

to ground will clamp the outputs to an acceptable voltage level.

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.