74ALVCH16373 데이터 시트보기 (PDF) - Fairchild Semiconductor

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74ALVCH16373

Low Voltage 16-Bit Transparent Latch with Bushold

Fairchild Semiconductor 

Functional Description

The 74ALVCH16373 contains sixteen edge D-type latches

with 3-STATE outputs. The device is byte controlled with

each byte functioning identically, but independent of the

other. Control pins can be shorted together to obtain full

16-bit operation. The following description applies to each

byte. When the Latch Enable (LEn) input is HIGH, data on

the In enters the latches. In this condition the latches are

transparent, i.e., a latch output will change state each time

Logic Diagram

its I input changes. When LEn is LOW, the latches store

information that was present on the I inputs a setup time

preceding the HIGH-to-LOW transition on LEn. The

3-STATE outputs are controlled by the Output Enable

(OEn) input. When OEn is LOW the standard outputs are in

the 2-state mode. When OEn is HIGH, the standard outputs

are in the high impedance mode but this does not interfere

with entering new data into the latches.

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

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