UT232A

Preliminary

CMOS

UNISONICTECHNOLOGIESCO.,LTD

4 of 5

www.unisonic.com.tw

QW-R502-272.b

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.