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SN74LV139A Datasheet Preview

SN74LV139A Datasheet

DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXER

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SN54LV139A, SN74LV139A
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
D 2-V to 5.5-V VCC Operation
D Max tpd of 7.5 ns at 5 V
D Support Mixed-Mode Voltage Operation on
All Ports
D Designed Specifically for High-Speed
Memory Decoders and Data-Transmission
Systems
D Incorporate Two Enable Inputs to Simplify
Cascading and/or Data Reception
SCLS396I − APRIL 1998 − REVISED APRIL 2005
D Ioff Supports Partial-Power-Down Mode
Operation
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
− 1000-V Charged-Device Model (C101)
SN54LV139A . . . J OR W PACKAGE
SN74LV139A . . . D, DB, DGV, NS,
OR PW PACKAGE
(TOP VIEW)
SN74LV139A . . . RGY PACKAGE
(TOP VIEW)
SN54LV139A . . . FK PACKAGE
(TOP VIEW)
1G 1
1A 2
1B 3
1Y0 4
1Y1 5
1Y2 6
1Y3 7
GND 8
16 VCC
15 2G
14 2A
13 2B
12 2Y0
11 2Y1
10 2Y2
9 2Y3
1
1A 2
1B 3
1Y0 4
1Y1 5
1Y2 6
1Y3 7
8
16
15 2G
14 2A
13 2B
12 2Y0
11 2Y1
10 2Y2
9
1B
3 2 1 20 19
4
18
2A
1Y0 5
17 2B
NC 6
16 NC
1Y1 7
15 2Y0
1Y2 8
14 2Y1
9 10 11 12 13
description/ordering information
NC − No internal connection
The ’LV139A devices are dual 2-line to 4-line decoders/demultiplexers designed for 2-V to 5.5-V VCC operation.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QFN − RGY
Reel of 1000 SN74LV139ARGYR LV139A
SOIC − D
Tube of 40
Reel of 2500
SN74LV139AD
SN74LV139ADR
LV139A
−40°C to 85°C
SOP − NS
SSOP − DB
Reel of 2000
Reel of 2000
Tube of 90
SN74LV139ANSR
SN74LV139ADBR
SN74LV139APW
74LV139A
LV139A
TSSOP − PW
Reel of 2000
Reel of 250
SN74LV139APWR
SN74LV139APWT
LV139A
TVSOP − DGV Reel of 2000 SN74LV139ADGVR LV139A
CDIP − J
Tube of 25
SNJ54LV139AJ
SNJ54LV139AJ
−55°C to 125°C CFP − W
Tube of 150
SNJ54LV139AW
SNJ54LV139AW
LCCC − FK
Tube of 55
SNJ54LV139AFK
SNJ54LV139AFK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
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.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 2005, Texas Instruments Incorporated
1




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SN74LV139A Datasheet Preview

SN74LV139A Datasheet

DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXER

No Preview Available !

SN54LV139A, SN74LV139A
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SCLS396I − APRIL 1998 − REVISED APRIL 2005
description/ordering information (continued)
These devices are designed for high-performance memory-decoding or data-routing applications requiring very
short propagation delay times. In high-performance memory systems, these decoders can minimize the effects
of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay time
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.
The ’LV139A devices comprise two individual 2-line to 4-line decoders in a single package. The active-low
enable (G) input can be used as a data line in demultiplexing applications. These decoders/demultiplexers
feature fully buffered inputs, each of which represents only one normalized load to its driving circuit.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the
outputs, preventing damaging current backflow through the devices when they are powered down.
FUNCTION TABLE
INPUTS
SELECT
G
B
A
OUTPUTS
Y0 Y1 Y2 Y3
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
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN74LV139A
Description DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXER
Maker etcTI
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