HD74HC42 Datasheet, PDF (2/7 Pages) Hitachi Semiconductor – BCD-to-Decimal Decoder

HD74HC42
Pin Arrangement
0Y 1
1Y 2
2Y 3
3Y 4
4Y 5
5Y 6
6Y 7
GND 8
0A
1
2
3B
4
5
C
6
7
8D
9
(Top view)
16 V_CC
15 A
14 B
13 C
12 D
11 9Y
10 8Y
9 7Y
Logic Diagram
0Y
1Y
A
2Y
3Y
B
4Y
5Y
6Y
C
7Y
8Y
D
9Y
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