description

These latches are ideally suited for use as temporary

storage for binary information between processing units

and input/output or indicator units. Information present

ata date (D) input is transferred to the Q output when

the enable (C) is high and the Q output will follow the

data input as long as the enable remains high. Whon the

enable goes low, the information (that was present at

the data input at the time the wransition occurred) is

retained at the Q output unti the enable is permitted to

go high

The 75 and S75 feature complementary Q and T

outputs from a 4-bit latch, and are available in various

16-pin_ packages. For higher component density

applications, the 77 and 1577 4-bit latches are available

in 14.pin fat packages.

These circuits are completely compatible with al popular

TTL families. All inputs are diods-clamped to minimize

transmission line effects and simply system design.

Series 54 and 54LS devices are characterized for

operation over the full military temperature range of

55°C to 125°C; Series 74, and 74LS devices are

characterized for operation from 0°C to 70°C.