Datasheet

TLC3702
DUAL MICROPOWER LinCMOS™ VOLTAGE COMPARATORS
SLCS013E − NOVEMBER 1986 − REVISED MARCH 2012
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
circuit-design considerations (continued)
Figure 2
V
DD
V
DD
+ 4 V
DD
+ 8 V
DD
+ 12
INPUT CURRENT
vs
POSITIVE INPUT VOLTAGE
T
A
= 25° C
8
7
6
5
4
3
2
1
0
V
I
− Input Voltage − V
− Input Current − mAI
I
Figure 3
−0.3
V
I
− Input Voltage − V
INPUT CURRENT
vs
NEGATIVE INPUT VOLTAGE
T
A
= 25° C
−0.5 −0.7 −0.9
−10
−9
−8
−7
−6
−5
−4
−3
−2
−1
−0
− Input Current − mAI
I
+
−
1/2
TLC3702
V
ref
V
I
V
DD
See Note A
R
I
NOTE A: If the correct input state is required when the negative input exceeds GND, a Schottky clamp is required.
Negative Voltage Input Current Limit :
R
I
+
* V
I
* V
DD
* (* 0.3 V)
5mA
R
I
+
V
I
* V
DD
* 0.3 V
5mA
Positive Voltage Input Current Limit :
Figure 4. Typical Input Current-Limiting Configuration for a LinCMOS™ Comparator