UT213

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 8

www.unisonic.com.tw

QW-R103-144.a

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MARKING

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PIN CONFIGURATION

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PIN DESCRIPTION

PIN NO.

PIN NAME

DESCRIPTION

1, 2, 3, 28

RS-232 Transmitter Outputs

4, 9, 27

RS-232 Receiver Inputs

5, 8, 26

TTL/CMOS Receiver Outputs

6, 7, 20, 21

TTL/CMOS Transmitter Inputs

10

GND

Ground

11

+3.0V ~ +5.5V Supply Voltage

12

C1+

Positive terminal of the voltage doubler charge-pump capacitor

13

V+

+5.5V generated by the charge pump

14

C1-

Negative terminal of the voltage doubler charge-pump capacitor

15

C2+

Positive terminal of inverting charge-pump capacitor

16

C2-

Negative terminal of inverting charge-pump capacitor

17

V-

-5.5V generated by the charge pump

18, 23

RS-232 Receiver Inputs (Active in shutdown)

19, 22

TTL/CMOS Receiver Outputs (Active in shutdown)

24

EN

Active high enable control

25

SHDN

Active low shutdown control