GD75323
MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS213A – JANUARY 1996 – REVISED JUNE 1999
TYPICAL CHARACTERISTICS
RECEIVER SECTION
INPUT THRESHOLD VOLTAGE
vs
INPUT THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
SUPPLY VOLTAGE
2.4
2.2
2
2
1.8
1.6
1.4
1.2
1
V
IT+
V
IT +
1.8
1.6
1.4
1.2
V
IT–
0.8
0.6
0.4
0.2
0
V
IT–
0.8
0.6
0.4
0
10
20
30
40
50
60
70
2
3
4
5
6
7
8
9
10
T
A
– Free-Air Temperature – °C
V
CC
– Supply Voltage – V
Figure 11
Figure 12
NOISE REJECTION
MAXIMUM SUPPLY VOLTAGE
vs
FREE-AIR TEMPERATURE
6
5
4
3
2
1
0
V
T
= 5 V
= 25°C
CC
A
See Note A
16
14
12
10
8
C
= 300 pF
C
C
= 500 pF
C
C
= 12 pF
C
C
= 100 pF
C
6
4
2
10
40
100
400 1000
– Pulse Duration – ns
4000 10000
t
w
R ≥ 3 kΩ (from each output to GND)
L
0
NOTE A: This figure shows the maximum amplitude of
a
0
10
20
30
40
50
60
70
positive-going pulse that, starting from 0 V, does not
cause a change of the output level.
T
A
– Free-Air Temperature – °C
Figure 13
Figure 14
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
