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SL74HCT139N 데이터 시트보기 (PDF) - System Logic Semiconductor

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SL74HCT139N
System-Logic
System Logic Semiconductor System-Logic
SL74HCT139N Datasheet PDF : 5 Pages
1 2 3 4 5
SL74HCT139
Dual 1-of-4 Decoder/Demultiplexer
High-Performance Silicon-Gate CMOS
The SL74HCT139A is identical in pinout to the LS/ALS139. The
SL74HCT139A 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 µA
ORDERING INFORMATION
SL74HCT139N Plastic
SL74HCT139D SOIC
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
Select A1 A0 Y0 Y1 Y2 Y3
H
X XHH H H
L
L L LH H H
L
L HHL HH
L
H L HH L H
L
H HHH H L
X = don’t care
SLS
System Logic
Semiconductor

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