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Functional Description

The ABT16373 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

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

information that was present on the D inputs a setup time

STATE standard outputs are controlled by the Output

dard outputs are in the high impedance mode but this does

not interfere with entering new data into the latches.

Truth Tables

H

HIGH Voltage Level

L

LOW Voltage Level

X

Immaterial

Z

High Impedance

Previous

previous output prior to HIGH-to-LOW transition of LE

Logic Diagrams

Inputs

Outputs

XH

X

Z

HL

L

L

HL

H

H

L

L

X

(Previous)

Inputs

Outputs

XH

X

Z

HL

L

L

HL

H

H

LL

X

(Previous)