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PDF IN74AC139 Data sheet ( Hoja de datos )
| Número de pieza | IN74AC139 | |
| Descripción | Dual 2-4 Decoder/Demultiplexer | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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TECHNICAL DATA
Dual 1-of-4 Decoder/Demultiplexer
High-Speed Silicon-Gate CMOS
IN74AC139
The IN74AC139 is identical in pinout to the LS/ALS139, HC/HCT139. The device inputs are compatible with
standard CMOS outputs; with pullup resistors, they are compatible with
LS/ALS outputs.
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.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA; 0.1 µA @ 25°C
• High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
• Outputs Source/Sink 24 mA
IN74AC139N Plastic
IN74AC139D SOIC
TA = -40° to 85° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =VCC
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FUNCTION TABLE
Inputs
Select A1
HX
LL
LL
LH
LH
X = don’t care
A0
X
L
H
L
H
Outputs
Y0 Y1 Y2
HH H
LH H
HL H
HH L
HH H
Y3
H
H
H
H
L
1
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IN74AC139
EXPANDED LOGIC DIAGRAM
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet IN74AC139.PDF ] | |
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