HD74HCT138P 查看數據表（PDF） - Renesas Electronics
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HD74HCT138P Datasheet PDF : 6 Pages
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HD74HCT138
3-to-8-line Decoder/Demultiplexer
REJ03D0659–0200
(Previous ADE-205-547)
Rev.2.00
Mar 30, 2006
Description
The HD74HCT138 has 3 binary select inputs (A, B, and C). If the device is enabled these inputs determine which one
of the eight normally high outputs will go low. Two active low and one active high enables (G1, G2A and G2B) are
provided to ease the cascading of decoders.
Features
• High Speed Operation: tpd (A, B, C to Y) = 16.5 ns typ (CL = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: VCC = 2 V to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HCT138P
DILP-16 pin
PRDP0016AE-B
(DP-16FV)
P
PRSP0016 DH-B
HD74HCT138FPEL SOP-16 pin (JEITA) (FP-16DAV)
FP
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
Function Table
Enable
Inputs
Select
Outputs
G1
G2A
G2B
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
Rev.2.00 Mar 30, 2006 page 1 of 5
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