HD74HC138_15 Datasheet, PDF (4/10 Pages) Renesas Technology Corp – 3-to-8-line Decoder/Demultiplexer with Address Latch

HD74HC138
Function Table
Inputs
Enable
Select
Outputs
G1
G_2A
G_2B
C
B
A
Y₀
Y₁
Y₂
Y₃
Y₄
Y₅
Y₆
Y₇
X
X
H
X
X
X
H
H
H
H
H
H
H
H
X
H
X
X
X
X
H
H
H
H
H
H
H
H
L
X
X
X
X
X
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
L
H
H
H
H
H
H
H
L
L
L
H
L
H
H
L
H
H
H
H
H
H
L
L
L
H
H
H
H
H
L
H
H
H
H
H
L
L
H
L
L
H
H
H
H
L
H
H
H
H
L
L
H
L
H
H
H
H
H
H
L
H
H
H
L
L
H
H
L
H
H
H
H
H
H
L
H
H
L
L
H
H
H
H
H
H
H
H
H
H
L
H : High level
L : Low level
X : Irrelevant
Pin Arrangement
A1
Select
Inputs
B2
C3
Enable
Inputs
G2A 4
G2B 5
G1 6
Output Y7 7
GND 8
A
B
Y0
C
Y1
G2A
Y2
G2B
Y3
G1
Y4
Y7
Y5
Y6
(Top view)
16 V_CC
15 Y0
14 Y1
13 Y2
12 Y3 ^Outputs
11 Y4
10 Y5
9 Y6
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Supply voltage range
Input voltage
Output voltage
Output current
DC current drain per V_CC, GND
DC input diode current
DC output diode current
Power dissipation per package
Storage temperature
V_CC
V_IN
V_OUT
I_OUT
I_CC, I_GND
I_IK
I_OK
P_T
Tstg
–0.5 to +7.0
V
–0.5 to V_CC + 0.5
V
–0.5 to V_CC + 0.5
V
±25
mA
±50
mA
±20
mA
±20
mA
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.
REJ03D0570-0300 Rev.3.00 Mar 25, 2009
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