74ACQ374 Fairchild Semiconductor, 74ACQ374 Datasheet - Page 2

• Manufacturer Part Number: 74ACQ374
• Description: Quiet Series Octal D-Type Flip-Flop with 3-STATE Outputs
• Manufacturer: Fairchild Semiconductor

©1989 Fairchild Semiconductor Corporation
74ACQ374, 74ACTQ374 Rev. 1.3
Logic Symbol
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to
estimate propagation delays.
IEEE/IEC
2
Functional Description
The ACQ/ACTQ374 consists of eight edge-triggered flip-
flops with individual D-type inputs and 3-STATE true out-
puts. The buffered clock and buffered Output Enable are
common to all flip-flops. The eight flip-flops will store the
state of their individual D-type inputs that meet the setup
and hold time requirements on the LOW-to-HIGH Clock
(CP) transition. With the Output Enable (OE) LOW, the
contents of the eight flip-flops are available at the out-
puts. When the OE is HIGH, the outputs go to the high
impedance state. Operation of the OE input does not
affect the state of the flip-flops.
Truth Table
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
= LOW-to-HIGH Transition
D
H
X
L
n
Inputs
CP
X
OE
H
L
L
Outputs
www.fairchildsemi.com
O
H
Z
L
n