HD74AC273 Datasheet, PDF (3/10 Pages) Hitachi Semiconductor – Octal D Flip-Flop

Logic Diagram
HD74AC273
D0
D1
D2
D3
D4
D5
D6
D7
CP
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
MR
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Please note that this diagram is provided only for the understanding of logic operations and should not be
used to estimate propagation delays.
Mode Select-Truth Table
Inputs
Operating Mode
MR
CP
D_n
Reset (Clear)
L
X
X
Load “1”
H
H
Load “0”
H
L
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
: Low-to-High Clock Transition
Outputs
Q_n
L
H
L
DC Characteristics (unless otherwise specified)
Item
Symbol Max
Unit
Maximum quiescent supply current I_CC
80
µA
Maximum quiescent supply current I_CC
8.0
µA
Condition
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = Worst case
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = 25°C
3