HD74HC77 Datasheet, PDF (2/7 Pages) Hitachi Semiconductor – 4-bit Bistable Latch

HD74HC77
Pin Arrangement
1D 1
2D 2
Enable3-4 3
V_CC 4
3D 5
4D 6
NC 7
Logic Diagram (1/4)
Data
Q
DG
DG
Q
Q
DG
DG
Q
(Top view)
14 1Q
13 2Q
12 Enable1-2
11 GND
10 NC
9 3Q
8 4Q
Q
Enable
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage range
VCC
–0.5 to 7.0
V
Input / Output voltage
Vin, Vout
–0.5 to VCC +0.5
V
Input / Output diode current
IIK, IOK
±20
mA
Output current
IO
±25
mA
VCC, GND current
ICC or IGND
±50
mA
Power dissipation
PT
500
mW
Storage temperature
Tstg
–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 6