TLC374, TLC374Q, TLC374Y

LinCMOS

 QUADRUPLE DIFFERENTIAL COMPARATORS

SLCS118C – NOVEMBER 1983 – REVISED MARCH 1999

12

POST OFFICE BOX 655303

PRINCIPLES OF OPERATION

Figure 5

3

2

1

0

4

5

6

7

8

INPUT CURRENT

vs

VI – Input Voltage – V

VDD

VDD +4

VDD +8

VDD +12

TA = 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

INPUT CURRENT

vs

VI – Input Voltage – V

VDD– 0.3

VDD – 0.5

VDD – 0.7

VDD – 0.9

TA = 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

+

–

RL

VDD

1/4

TLC374

RL

VREF

VI

+VI – VDD – 0.3 V

RI =

Positive Voltage Input Current Limit:

5 mA

–VI – VDD – (0.3 V)

RI =

Negative Voltage Input Current Limit:

NOTE A: If the correct output state is required when the negative input exceeds VSS, a Schotty clamp is required.

Figure 7. Typical Input Current-Limiting Configuration for a LinCMOS Comparator