MC74AC374 Datasheet, PDF (2/10 Pages) Motorola, Inc – OCTAL D-TYPE FLIP-FLOP WITH 3-STATE OUTPUTS

TRUTH TABLE
Inputs
D_n
CP
H
L
X
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
= LOW-to-HIGH Transition
MC74AC374, MC74ACT374
Outputs
OE
O_n
L
H
L
L
H
Z
FUNCTIONAL DESCRIPTION
The MC74AC374/74ACT374 consists of eight edge−
triggered flip−flops with individual D−type inputs and
3−state true outputs. 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 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
outputs. 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.
D₀
D₁
D₂
D₃
D₄
D₅
D₆
D₇
CP
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
OE
O₀
O₁
O₂
O₃
O₄
O₅
O₆
O₇
NOTE: That this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
Figure 3. Logic Diagram
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V_CC
DC Supply Voltage (Referenced to GND)
−0.5 to +7.0
V
V_IN
DC Input Voltage (Referenced to GND)
−0.5 to V_CC +0.5
V
V_OUT
DC Output Voltage (Referenced to GND)
−0.5 to V_CC +0.5
V
I_IN
DC Input Current, per Pin
±20
mA
I_OUT
DC Output Sink/Source Current, per Pin
±50
mA
I_CC
DC V_CC or GND Current per Output Pin
±50
mA
T_stg
Storage Temperature
−65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
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