MC1489, MC1489A, SN55189, SN55189A, SN75189, SN75189A
QUADRUPLE LINE RECEIVERS
SLLS095D – SEPTEMBER 1973 – REVISED OCTOBER 1998
†
TYPICAL CHARACTERISTICS
INPUT THRESHOLD VOLTAGE
INPUT THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
vs
SUPPLY VOLTAGE
2
1.8
1.6
1.4
1.2
1
2.4
2.2
2
’89A V
IT+
’89A V
IT+
’89 V
IT–
1.8
1.6
1.4
1.2
1
’89 V
IT+
’89 V
IT–
IT+
’89A V
IT–
0.8
0.6
0.4
0.2
’89 V
IT–
’89A V
0.8
0.6
0.4
0
–100 –75 –50 –25
0
25 50 75 100 125 150
2
3
4
5
6
7
8
9
10
V
CC
– Supply Voltage – V
T
A
– Free-Air Temperature – °C
Figure 7
Figure 8
SN75189A
NOISE REJECTION
SN75189
NOISE REJECTION
6
5
4
3
2
1
0
6
5
4
3
2
1
0
V
= 5 V
= 25°C
V
= 5 V
= 25°C
CC
CC
T
A
T
A
See Note A
See Note A
C
= 300 pF
= 500 pF
C
C
C
C
= 300 pF
= 500 pF
C
C
C
C
= 12 pF
C
C
= 10 pF
C
= 100 pF
C
C
C
= 100 pF
100
C
10
40
400 1000
4000 10000
10
40
100
400 1000
– Pulse Duration – ns
4000 10000
t
w
– Pulse Duration – ns
t
w
NOTE A: Maximum amplitude of a positive-going pulse that,
starting from 0 V, will not cause a change in the
output level.
NOTE A: Maximum amplitude of a positive-going pulse that,
starting from 0 V, will not cause a change in the
output level.
Figure 9
Figure 10
†
8
Data for free-air temperatures below 0°C and above 70°C are applicable to SN55189 and SN55189A circuits only.
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TI [ TEXAS INSTRUMENTS ]
