HD74HC238 Datasheet, PDF (1/7 Pages) Hitachi Semiconductor – 3-to-8-line Decoder/Demultiplexer

HD74HC238
3-to-8-line Decoder/Demultiplexer
REJ03D0593–0200
(Previous ADE-205-470)
Rev.2.00
Jan 31, 2006
Description
The HD74HC238 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, G_2A and G_2B) are
provided to ease the cascading of decoders.
Features
• High Speed Operation: t_pd (Data to Y) = 15 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 4 µA max (Ta = 25°C)
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC238P
DILP-16 pin
PRDP0016AE-B
(DP-16FV)
P
HD74HC238FPEL SOP-16 pin (JEITA)
PRSP0016DH-B
(FP-16DAV)
FP
HD74HC238RPEL SOP-16 pin (JEDEC)
PRSP0016DG-A _RP
(FP-16DNV)
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
Function Table
Enable
Inputs
Select
Outputs
G₁
G_2A
G_2B
C
B
A
Y₀
Y₁
Y₂
Y₃
Y₄
Y₅
Y₆
Y₇
X
X
H
X
X
X
L
L
L
L
L
L
L
L
X
H
X
X
X
X
L
L
L
L
L
L
L
L
L
X
X
X
X
X
L
L
L
L
L
L
L
L
H
L
L
L
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
H
L
H
L
L
L
L
L
L
H
L
L
L
H
L
L
L
H
L
L
L
L
L
H
L
L
L
H
H
L
L
L
H
L
L
L
L
H
L
L
H
L
L
L
L
L
L
H
L
L
L
H
L
L
H
L
H
L
L
L
L
L
H
L
L
H
L
L
H
H
L
L
L
L
L
L
L
H
L
H
L
L
H
H
H
L
L
L
L
L
L
L
H
H : High level
L : Low level
X : Irrelevant
Rev.2.00 Jan 31, 2006 page 1 of 6