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SN74AHC139DG4 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza SN74AHC139DG4
Descripción Electrónicos  DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
Download  22 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

SN74AHC139DG4 Datasheet(HTML) 1 Page - Texas Instruments

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2
1 20 19
9 10 11 12 13
4
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7
8
18
17
16
15
14
2A
2B
NC
2Y0
2Y1
1B
1Y0
NC
1Y1
1Y2
SN54AHC139 . . . FKP ACKAGE
(TOP VIEW)
NC − No internal connection
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1G
1A
1B
1Y0
1Y1
1Y2
1Y3
GND
VCC
2G
2A
2B
2Y0
2Y1
2Y2
2Y3
SN74AHC139 . . . D,DB,DGV,N,NS
OR PW PACKAGE
(TOP VIEW)
SN74AHC139 . . . RGY PACKAGE
(TOP VIEW)
1
16
8
9
2
3
4
5
6
7
15
14
13
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10
2G
2A
2B
2Y0
2Y1
2Y2
1A
1B
1Y0
1Y1
1Y2
1Y3
SN54AHC139 . . . J or W PACKAGE
SN74AHC139
SN54AHC139
www.ti.com
SCLS259L – DECEMBER 1995 – REVISED JUNE 2013
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
Check for Samples: SN74AHC139, SN54AHC139
1
FEATURES
Operating Range 2-V to 5.5-V
ESD Protection Exceeds JESD 22
Designed Specifically for High-Speed Memory
2000-V Human-Body Model (A114-A)
Decoders and Data-Transmission Systems
200-V Machine Model (A115-A)
Incorporate Two Enable Inputs to Simplify
1000-V Charged-Device Model (C101)
Cascading and/or Data Reception
Latch-Up Performance Exceeds 250 mA Per
JESD 17
DESCRIPTION
The ’AHC139 devices are dual 2-line to 4-line decoders/demultiplexers designed for 2-V to 5.5-V VCC operation.
These devices are designed to be used in high-performance memory-decoding or data-routing applications
requiring very short propagation delay times. In high-performance memory systems, these decoders can be used
to minimize the effects of system decoding. When used with high-speed memories utilizing a fast enable circuit,
the delay times of these decoders and the enable time of the memory usually are less than the typical access
time of the memory. This means that the effective system delay introduced by the decoders is negligible.
FUNCTION TABLE
(EACH GATE)
INPUTS
OUTPUT
SELECT
G
Y0
Y1
Y2
Y3
B
A
H
X
X
H
H
H
H
L
L
L
L
H
H
H
L
L
H
H
L
H
H
L
H
L
H
H
L
H
L
H
H
H
H
H
L
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 1995–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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