TLC27L4, TLC27L4A, TLC27L4B, TLC27L4Y, TLC27L9

LinCMOS

™ PRECISION QUAD OPERATIONAL AMPLIFIERS

SLOS053C – OCTOBER 1987 – REVISED AUGUST 1994

34

POST OFFICE BOX 655303

APPLICATION INFORMATION

latch-up (continued)

The current path established if latch-up occurs is usually between the positive supply rail and ground and can

be triggered by surges on the supply lines and/or voltages on either the output or inputs that exceed the supply

voltage. Once latch-up occurs, the current flow is limited only by the impedance of the power supply and the

forward resistance of the parasitic thyristor and usually results in the destruction of the device. The chance of

latch-up occurring increases with increasing temperature and supply voltages.

–

+

–

+

500 k

Ω

500 k

Ω

5 V

500 k

Ω

0.1

µF

500 k

Ω

VO2

VO1

1/4

TLC27L4

TLC27L4

1/4

Figure 44. Multivibrator

TLC27L4

1/4

–

+

100 k

Ω

VDD

33 k

Ω

100 k

Ω

100 k

Ω

Set

Reset

VO

NOTE: VDD = 5 V to 16 V

Figure 45. Set /Reset Flip-Flop