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HD74HCT238 Datasheet, PDF (2/6 Pages) Hitachi Semiconductor – 3-to-8-line Decoder/Demultiplexer
HD74HCT238
Pin Arrangement
Select
Inputs
A1
B2
C3
G2A 4
Enable
Inputs
G2B 5
G1 6
Outputs Y7 7
GND 8
A
B
Y0
C
Y1
G2A
Y2
G2B
Y3
G1
Y4
Y7 Y6 Y5
(Top view)
16 VCC
15 Y0
14 Y1
13 Y2
12 Y3 Outputs
11 Y4
10 Y5
9 Y6
Logic Diagram
G1
G2B
Y0
G2A
Y1
A
Y2
Y3
B
Y4
C
Y5
Y6
Y7
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
Output current
DC current drain per VCC, GND
DC input diode current
DC output diode current
VOUT
IOUT
ICC, IGND
IIK
IOK
–0.5 to VCC + 0.5
V
±25
mA
±50
mA
±20
mA
±20
mA
Power dissipation per package
PT
Storage temperature
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 Mar 30, 2006 page 2 of 5