MC1489, MC1489A
TYPICAL CHARACTERISTICS
(V
CC
= 5.0 Vdc, T
A
= +25°C, unless otherwise noted)
10
8.0
IL, INPUT CURRENT (mA)
VO , OUTPUT VOLTAGE (Vdc)
6.0
4.0
2.0
0
−2.0
−4.0
−6.0
−8.0
−10
−25
−20
−15
−10
−5.0
0
5.0
10
15
20
25
V
I
I
I
6.0
5.0
R
T
5.0 k
3.0 V
th
5.0 V
2.0
4.0
1.0
0
−3.0 −2.0 −1.0
0
V
ILH
V
IHL
1.0
2.0
3.0
R
T
13 k
V
th
5.0 V
R
T
1
R
T
11 k
V
th
−5.0 V
V
I
E
O
R
T
V
th
V
in
, INPUT VOLTAGE (V)
V
I
, INPUT VOLTAGE (V)
Figure 5. Input Current
Figure 6. MC1489 Input Threshold
Voltage Adjustment
VO , OUTPUT VOLTAGE (Vdc)
5.0
V
in
4.0
3.0
2.0
1.0
0
−3.0 −2.0
−1.0
0
V
ILH
1.0
V
IHL
2.0
3.0
4.0
R
T
5.0 k
V
th
5.0 V
R
T
1
R
T
11 k
V
th
−5.0 V
E
O
VIH , INPUT THRESHOLD VOLTAGE (Vdc)
6.0
R
T
V
th
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
−60
MC1489A V
IH
MC1489 V
IH
MC1489 V
IL
MC1489A V
IL
0
+60
+120
V
I
, INPUT VOLTAGE (V)
T, TEMPERATURE (°C)
Figure 7. MC1489A Input Threshold
Voltage Adjustment
Figure 8. Input Threshold Voltage
versus Temperature
2.0
INPUT THRESHOLD VOLTAGE (Vdc)
V
IH
MC1489A
1.0
V
IH
MC1489
V
IL
MC1489
V
IL
MC1489A
0
3.0
4.0
5.0
6.0
V
CC
, POWER SUPPLY VOLTAGE (V)
Figure 9. Input Threshold versus
Power Supply Voltage
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