HD74HC155 Datasheet, PDF (3/7 Pages) Hitachi Semiconductor – Dual 2-to-4-line Decoders/Demultiplexers

HD74HC155
Pin Arrangement
Data
1C
1
Strobe
1G
2
Select
Input B
3
1Y3 4
1Y2 5
Outputs
1Y1 6
1Y0 7
GND 8
1Y3
1Y2
B
1Y1 B
A
1Y0 _A
2Y3
B
B 2Y2
A
A ^2Y1
16 V_CC
15
Data
2C
14
Strobe
2G
13
Select
Input A
12 2Y3
11 2Y2
10 2Y1
Outputs
2Y0
9 2Y0
(Top view)
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Supply voltage range
VCC
–0.5 to +7.0
V
Input voltage
VIN
–0.5 to VCC + 0.5
V
Output voltage
VOUT
–0.5 to VCC + 0.5
V
Output current
DC current drain per VCC, GND
DC input diode current
IOUT
ICC, IGND
IIK
±25
mA
±50
mA
±20
mA
DC output diode current
IOK
±20
mA
Power dissipation per package
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.
Recommended Operating Conditions
Item
Symbol
Ratings
Supply voltage
VCC
2 to 6
Input / Output voltage
VIN, VOUT
0 to VCC
Operating temperature
Ta
–40 to 85
Input rise / fall time^*1
0 to 1000
tr, tf
0 to 500
0 to 400
Note: 1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Unit
V
V
°C
ns
Conditions
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
Rev.2.00, Oct 11, 2005 page 3 of 6