74LCXH162373 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

74LCXH162373

Low Voltage 16-Bit Transparent Latch with Bushold and 26Ω Series Resistor Outputs

Fairchild Semiconductor 

Functional Description

The LCXH162373 contains sixteen D-type latches with

3-STATE standard 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 Diagrams

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 of LEn. The

3-STATE standard outputs are controlled by the Output

Enable (OEn) input. When OEn is LOW, the standard out-

puts are in the 2-state mode. When OEn is HIGH, the stan-

dard 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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