GD65232, GD75232

MULTIPLE RS232 DRIVERS AND RECEIVERS

SLLS206J − MAY 1995 − REVISED NOVEMBER 2004

10

POST OFFICE BOX 655303

TYPICAL CHARACTERISTICS

Figure 11

INPUT THRESHOLD VOLTAGE

vs

FREE-AIR TEMPERATURE

TA − Free-Air Temperature − °C

VIT+

VIT−

2.4

2.2

2

1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

010

20

30

40

50

60

70

Figure 12

INPUT THRESHOLD VOLTAGE

vs

SUPPLY VOLTAGE

VCC − Supply Voltage − V

VIT+

VIT−

2

1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

0.2

0

2

345

6

7

8

9

10

Figure 13

NOISE REJECTION

CC = 300 pF

tw − Pulse Duration − ns

CC = 500 pF

NOTE A: This

figure

shows

the

maximum

amplitude

of

a

positive-going pulse that, starting from 0 V, does not cause

a change of the output level.

6

5

4

3

2

1

0

10

40

100

400

1000

4000 10000

VCC = 5 V

TA = 25°C

See Note A

CC = 100 pF

CC = 12 pF

Figure 14

MAXIMUM SUPPLY VOLTAGE

vs

FREE-AIR TEMPERATURE

TA − Free-Air Temperature − °C

RL ≥ 3 kΩ (from each output to GND)

16

14

12

10

8

6

4

2

0

0

10

20

3040

5060

70