HD74HC74 Datasheet, PDF (2/8 Pages) Hitachi Semiconductor – Dual D-type Flip-Flops (with Preset and Clear)

HD74HC74
Pin Arrangement
1CLR 1
1D 2
1CK 3
1PR 4
1Q 5
1Q 6
GND 7
CK D
PR CLR
QQ
D CK
CLR PR
QQ
(Top view)
14 V_CC
13 2CLR
12 2D
11 2CK
10 2PR
9 2Q
8 2Q
Logic Diagram (1/2)
PR
Q
CLR
CK
# ^CK
Q
D
# _CK
CK
CK
CK
#
CK
#
CK
CK
CK
#
CK
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage range
VCC
–0.5 to 7.0
V
Input / Output voltage
Input / Output diode current
Vin, Vout
IIK, IOK
–0.5 to VCC +0.5
V
±20
mA
Output current
VCC, GND current
IO
±25
mA
ICC or IGND
±50
mA
Power dissipation
Storage temperature
PT
Tstg
500
mW
–65 to +150
°C
Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of
which may be realized at the same time.
Rev.2.00, Oct 06, 2005 page 2 of 7