www.fairchildsemi.com

2

Connection Diagram

Truth Tables

H

= HIGH Voltage Level

L

= LOW Voltage Level

X

= Immaterial (HIGH or LOW, inputs may not float)

Z

= High Impedance

Functional Description

The 74VCX162374 consists of sixteen edge-triggered flip-

flops with individual D-type inputs and 3-STATE true out-

puts. The device is byte controlled with each byte function-

ing identically, but independent of the other. The control

pins can be shorted together to obtain full 16-bit operation.

Each clock has a buffered clock and buffered Output

Enable common to all flip-flops within that byte. The

description which follows applies to each byte. Each flip-

flop will store the state of their individual I inputs that meet

the setup and hold time requirements on the LOW-to-HIGH

the contents of the flip-flops are available at the outputs.

of the flip-flops.

Logic Diagram

Byte 1 (0:7)

Byte 2 (8:15)

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

Inputs

Outputs



LH

H



LL

L

LL

X

XH

X

Z

Inputs

Outputs



LH

H



LL

L

LL

X

XH

X

Z