參數(shù)資料
型號(hào): IN74HCT139AN
廠商: INTEGRAL JOINT STOCK COMPANY
英文描述: Octal Transparent D-Type Latches With 3-State Outputs 20-TSSOP -40 to 85
中文描述: 雙1 - - 4解碼器/解復(fù)用器
文件頁(yè)數(shù): 1/5頁(yè)
文件大小: 143K
代理商: IN74HCT139AN
IN74HCT139A
1
D
UAL
1-
OF
-4
D
ECODER
/D
EMULTIPLEXER
High-Performance Silicon-Gate CMOS
The IN74HCT139A is identical in pinout to the LS/ALS139.
The IN74HCT139A may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
This device consists of two independent 1-of-4 decoders,
each of which decodes a two-bit Address to one-of-four active-
low outputs. Active-low Selects are provided to facilitate the
demultiplexing and cascading functions. The demultiplexing
function is accomplished by using the Address inputs to select
the desired device output, and utilizing the Select as a data input.
TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0
μ
A
ORDERING INFORMATION
IN74HCT139AN Plastic
IN74HCT139AD SOIC
T
A
= -55
°
to 125
°
C for all
packages
FUNCTION TABLE
Inputs
A1
A0
X
X
L
L
L
H
H
L
H
H
X = don’t care
Outputs
Y1
H
H
L
H
H
Select
H
L
L
L
L
Y0
H
L
H
H
H
Y2
H
H
H
L
H
Y3
H
H
H
H
L
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
PIN ASSIGNMENT
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