MC1489, MC1489A, SN55189, SN55189A, SN75189, SN75189A
QUADRUPLE LINE RECEIVERS
SLLS095D – SEPTEMBER 1973 – REVISED OCTOBER 1998
TYPICAL CHARACTERISTICS
†
INPUT THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
2.4
V IT – Input Threshold Voltage – V
2.2
2
’89A VIT+
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
– 100 – 75 – 50 – 25
0
25
50
75 100 125 150
’89A VIT–
’89 VIT+
’89 VIT–
V IT – Input Threshold Voltage – V
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2
3
4
5
6
7
8
VCC – Supply Voltage – V
9
10
INPUT THRESHOLD VOLTAGE
vs
SUPPLY VOLTAGE
TA – Free-Air Temperature –
°C
Figure 7
SN75189
NOISE REJECTION
6
VCC = 5 V
TA = 25°C
See Note A
6
SN75189A
NOISE REJECTION
Amplitude – V
CC = 500 pF
Amplitude – V
4
3
2
2
CC = 10 pF
1
CC = 100 pF
1
0
10
40
100
400
1000
4000 10000
0
10
tw – Pulse Duration – ns
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
† Data for free-air temperatures below 0°C and above 70°C are applicable to SN55189 and SN55189A circuits only.
8
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
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CC = 300 pF
4
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CC = 12 pF
CC = 100 pF
40
100
400
1000
tw – Pulse Duration – ns
Figure 10
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’89 VIT–
’89 VIT+
’89A VIT–
’89A VIT+
Figure 8
VCC = 5 V
TA = 25°C
See Note A
CC = 300 pF
CC = 500 pF
ÁÁÁÁ
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4000 10000
TI [ TEXAS INSTRUMENTS ]
