DM74LS574 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – Octal D-Type Flip-Flop with 3-STATE Outputs

March 1988
Revised March 2000
DM74LS574
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:
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
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
V_CC = Pin 20
GND = Pin 10
Truth Table
Inputs
Dn
H
L
C_P
X
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
= HIGH-to-LOW Clock (CP) transition
Outputs
OE
On
L
H
L
L
H
Z
© 2000 Fairchild Semiconductor Corporation DS009815
www.fairchildsemi.com