General Description

The ABT377 has eight edge-triggered, D-type flip-flops with individual D inputs and Q outputs. The common buffered Clock (CP) input loads all flip-flops simultaneously when the Clock Enable (CE) is LOW.

The register is fully edge-triggered. The state of each D input, one setup time before the LOW-to-HIGH clock transition, is transferred to the corresponding flip-flop’s Q output. The CE input must be stable only one setup time prior to the LOW-to-HIGH clock transition for predictable operation.

Features

■ Clock enable for address and data synchronization applications

■ Eight edge-triggered D-type flip-flops

■ Buffered common clock

■ See ABT273 for master reset version

■ See ABT373 for transparent latch version

■ See ABT374 for 3-STATE version

■ Output sink capability of 64 mA, source capability of 32 mA

■ Guaranteed latchup protection

■ High impedance glitch free bus loading during entire

power up and power down cycle

■ Non-destructive hot insertion capability

■ Disable time less than enable time to avoid bus contention