SN74LVC138A-EP Demultiplexers Datasheet

SN74LVC138A-EP Datasheet, PDF, Equivalent


Part Number

SN74LVC138A-EP

Description

3-Line to 8-Line Decoders Demultiplexers

Manufacture

etcTI

Total Page 16 Pages
Datasheet
Download SN74LVC138A-EP Datasheet


SN74LVC138A-EP
SN74LVC138A-EP
www.ti.com....................................................................................................................................... SCAS734D – NOVEMBER 2003 – REVISED NOVEMBER 2008
3-LINE TO 8-LINE DECODER/DEMULTIPLEXER
FEATURES
1
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
Operates From 2 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max tpd of 5.8 ns at 3.3 V
Typical VOLP (Output Ground Bounce) < 0.8 V
at VCC = 3.3 V, TA = 25°C
Typical VOHV (Output VOH Undershoot) > 2 V at
VCC = 3.3 V, TA = 25°C
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
Controlled Baseline
One Assembly/Test Site
One Fabrication Site
Available in Military (–55°C/125°C)
Temperature Range(1)
Extended Product Life Cycle
Extended Product-Change Notification
Product Traceability
(1) Custom temperature ranges available
xxx
D OR PW PACKAGE
(TOP VIEW)
A
B
C
G2A
G2B
G1
Y7
GND
1
2
3
4
5
6
7
8
16 VCC
15 Y0
14 Y1
13 Y2
12 Y3
11 Y4
10 Y5
9 Y6
DESCRIPTION/ORDERING INFORMATION
The SN74LVC138A 3-line to 8-line decoder/demultiplexer is designed for 2.7-V to 3.6-V VCC operation.
The device is designed for high-performance memory-decoding or data-routing applications requiring very short
propagation delay times. In high-performance memory systems, this decoder minimizes the effects of system
decoding. When employed with high-speed memories utilizing a fast enable circuit, delay times of this decoder
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 decoder is negligible.
The conditions at the binary-select inputs and the three enable inputs select one of eight output lines. Two
active-low enable inputs and one active-high enable input reduce the need for external gates or inverters when
expanding. A 24-line decoder can be implemented without external inverters, and a 32-line decoder requires only
one inverter. An enable input can be used as a data input for demultiplexing applications.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in
a mixed 3.3-V/5-V system environment.
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2008, Texas Instruments Incorporated

SN74LVC138A-EP
SN74LVC138A-EP
SCAS734D – NOVEMBER 2003 – REVISED NOVEMBER 2008....................................................................................................................................... www.ti.com
TA
-40°C to 125°C
–55°C to 125°C
ORDERING INFORMATION(1)
PACKAGE (2)
ORDERABLE PART NUMBER
SOIC - D
Reel of 2500
SN74LVC138AQDREP
TSSOP - PW
Reel of 2000
SN74LVC138AQPWREP
TSSOP – PW
Reel of 250
SN74LVC138AMPWTEP
TOP-SIDE MARKING
C138AEP
C138AEP
C138AME
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
Web site at www.ti.com.
(2) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
FUNCTION TABLE
ENABLE INPUTS SELECT INPUTS
OUTPUTS
G1 G2A G2B C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
XHXXXXHHHHHHHH
XXHXXXHHHHHHHH
L XXXXXHHHHHHHH
HL L L L L LHHHHHHH
HL L L LHHL HHHHHH
HL L L HLHHLHHHHH
HL L L HHHHHLHHHH
HL LHL LHHHHL HHH
HL LHLHHHHHHLHH
HL LHHLHHHHHHLH
HL LHHHHHHHHHHL
2 Submit Documentation Feedback
Copyright © 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): SN74LVC138A-EP


Features SN74LVC138A-EP www.ti.com.............. ....................................... ....................................... ....................................... .... SCAS734D – NOVEMBER 2003 – REV ISED NOVEMBER 2008 3-LINE TO 8-LINE DEC ODER/DEMULTIPLEXER FEATURES 1 • ESD Protection Exceeds 2000 V Per MIL-STD-8 83, Method 3015; Exceeds 200 V Using Ma chine Model (C = 200 pF, R = 0) • Ope rates From 2 V to 3.6 V • Inputs Acce pt Voltages to 5.5 V • Max tpd of 5.8 ns at 3.3 V • Typical VOLP (Output G round Bounce) < 0.8 V at VCC = 3.3 V, T A = 25°C • Typical VOHV (Output VOH Undershoot) > 2 V at VCC = 3.3 V, TA = 25°C SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS • Controlled Bas eline • One Assembly/Test Site • On e Fabrication Site • Available in Mil itary (–55°C/125°C) Temperature Ran ge(1) • Extended Product Life Cycle Extended Product-Change Notification • Product Traceability (1) Custom te mperature ranges available xxx D OR PW PACKAGE (TOP VIEW) A B C G2A G2B G1 Y7 GND 1 2 3 4 5 6 7.
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