74VCX16722(2000) Ver la hoja de datos (PDF) - Fairchild Semiconductor

Número de pieza

componentes Descripción

fabricante

74VCX16722
(Rev.:2000)

Low Voltage 22-Bit Register with 3.6V Tolerant Inputs and Outputs

Fairchild Semiconductor 

Connection Diagram

Pin Descriptions

Pin Names

Description

OE

CE

CLK

D1 - D21

O1 - O21

Output Enable Input (Active LOW)

Clock Enable Input (Active Low)

Clock Input

Data Inputs

3-STATE Outputs

Truth Table

CLK

CE

OE D0-D21 O0-O21

X

X

H

X

Z

X

H

L

L

L

X

O0

L

L

L

L

H

H

L or H

L

L

X

O0

H = HIGH Voltage Level

L = LOW Level Voltage

X = Immaterial (HIGH or LOW, Inputs may not float)

Z = High Impedance

O0 = Previous O0 before LOW-to-HIGH transition of Clock

= LOW-to-HIGH transition

Functional Description

The VCX16722 contains twenty-two D-type flip-flops with

3-STATE standard outputs. The twenty-two flip-flops will

store the state of their individual D-type inputs that meet

the setup and hold time requirements on the LOW-HIGH

Clock (CLK) transition, when the Clock-Enable (CE) is

LOW. The 3-STATE standard outputs are controlled by the

Output-Enable (OE). When OE is HIGH, the standard out-

puts are in high impedance mode but this does not inter-

fere with entering new data into the flip-flops.

Logic Diagram

www.fairchildsemi.com

2

Share Link: