Datasheet

TLC374, TLC374Q, TLC374Y
LinCMOS QUADRUPLE DIFFERENTIAL COMPARATORS
SLCS118C – NOVEMBER 1983 – REVISED MARCH 1999
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
Figure 5
3
2
1
0
4
5
6
7
8
II – Input Current – mA
I
I
INPUT CURRENT
vs
INPUT VOLTAGE
†
V
I
– Input Voltage – V
V
DD
V
DD
+4 V
DD
+8 V
DD
+12
T
A
= 25°C
†
The dashed line identifies an area of operation where some
degradation of parametric performance may be experienced.
Figure 6
3
2
1
0
4
5
6
7
8
II – Input Current – mA
I
I
INPUT CURRENT
vs
INPUT VOLTAGE
†
V
I
– Input Voltage – V
V
DD
– 0.3 V
DD
– 0.5 V
DD
– 0.7 V
DD
– 0.9
T
A
= 25°C
9
10
†
The dashed line identifies an area of operation where some
degradation of parametric performance may be experienced.
See Note A
5 mA
+
–
R
L
V
DD
1/4
TLC374
R
L
V
REF
V
I
+V
I
– V
DD
– 0.3 V
R
I
=
Positive Voltage Input Current Limit:
5 mA
–V
I
– V
DD
– (0.3 V)
R
I
=
Negative Voltage Input Current Limit:
NOTE A: If the correct output state is required when the negative input exceeds V
SS
, a Schotty clamp is required.
Figure 7. Typical Input Current-Limiting Configuration for a LinCMOS Comparator