HD74HC74 Datasheet, PDF (1/8 Pages) Hitachi Semiconductor – Dual D-type Flip-Flops (with Preset and Clear)

HD74HC74
Dual D-type Flip-Flops (with Preset and Clear)
REJ03D0549-0200
(Previous ADE-205-421)
Rev.2.00
Oct 06, 2005
Description
The flip-flop has independent data, preset, clear, and clock inputs and Q and Q outputs. The logic level present at the
data input is transferred to the output during the positive going transition to the clock pulse. Preset and clear are
independent of the clock and accomplished by a low level at the appropriate input.
Features
• High Speed Operation: t_pd (Clock to Q or Q) = 14 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 2 µA max (Ta = 25°C)
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC74P
DILP-14 pin
PRDP0014AB-B
(DP-14AV)
P
HD74HC74FPEL SOP-14 pin (JEITA)
PRSP0014DF-B
(FP-14DAV)
FP
HD74HC74TELL TSSOP-14 pin
PTSP0014JA-B
(TTP-14DV)
T
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
ELL (2,000 pcs/reel)
Function Table
Inputs
Outputs
Preset
Clear
Clock
Data
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
L
L
X
X
H^*1
H^*1
H
H
H
H
L
H
H
L
L
H
H
H
L
X
No change
H
H
H
X
No change
H
H
X
No change
H : High level
L : Low level
X : Irrelevant
Note: 1. Q and Q will remain High as long as Preset and Clear are Low, but Q and Q are unpredictable, if Preset and
Clear go High simultaneously.
Rev.2.00, Oct 06, 2005 page 1 of 7