UT232A

Preliminary

CMOS

UNISONICTECHNOLOGIESCO.,LTD

3 of 5

www.unisonic.com.tw

QW-R502-272.b

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Supply voltage range

6

V

Positive-output supply voltage range

V

+

V

Negative-output supply voltage range

V

-

13.2V

V

V

Input Voltages

±30

V

(V+, +0.3) ~(V-, -0.3)

V

Output Voltages

-0.3~(Vcc+0.3)

V

Short Circuit Duration

Continuous

Power Dissipation

375

mW

Operating Temperature

0 ~ +70

°С

Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX UNIT

TTL INPUT

Low

0.8

V

Logic Threshold

High

2.0

V

Logic Pull up Current

15

200

µA

Maximum Data Rate

120

k

TTL OUTPUT

Low

0.4

V

TTL/CMOS Output Voltage

High

3.5

V

RS-232 OUTPUT

Output Voltage Swing

All transmitter outputs loaded

With 3kΩ to Ground

±5

±9

V

Output Resistance

300

Ω

Output Short Circuit Current

Infinite duration

±18

mA

RS-232 INPUT

Voltage Range

-30

+30

V

Low

0.8

1.2

V

Voltage Threshold

High

1.7

2.4

V

Hysteresis

0.2

0.5

1.0

V

Resistance

3

5

7

kΩ

DYNAMIC CHARACTERISTICS

Propagation Delay, RS232 to TTL

1.5

µs

Instantaneous Slew Rate

SR

30

V/µs

Transition Region Slew Rate

SR

+3V ~ -3V or -3V ~ +3V

10

V/µs

POWER REQUIREMENTS

10

15

mA

25

mA