74LS574

Octal D-Type Flip-Flop with 3-STATE Outputs

General Description

The DM74LS574 is a high speed low power octal flip-flop

with a buffered common Clock (CP) and a buffered com-

mon Output Enable (OE). The information presented to the

D inputs is stored in the flip-flops on the LOW-to-HIGH

Clock (CP) transition.

This device is functionally identical to the DM74LS374

except for the pinouts.

Ordering Code:

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbol

VCC = Pin 20

GND

= Pin 10

Connection Diagram

Truth Table

H

= HIGH Voltage Level

L

= LOW Voltage Level

X

= Immaterial

Z

= High Impedance

 = HIGH-to-LOW Clock (CP) transition

Order Number

Package Number Package Description

DM74LS574WM

M20B

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

DM74LS574N

N20A

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Inputs

Outputs

Dn

CP

OE

On

H



LH

L



LL

XX

H

Z

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