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SN74HC138QPWRQ1 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce SN74HC138QPWRQ1
Description  3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
Download  14 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

SN74HC138QPWRQ1 Fiches technique(HTML) 1 Page - Texas Instruments

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SN74HC138-Q1
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SCLS533A − AUGUST 2003 − REVISED SEPTEMBER 2008
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Qualified for Automotive Applications
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D Targeted Specifically for High-Speed
Memory Decoders and Data-Transmission
Systems
D 2-V to 6-V V
CC Operation
D Outputs Can Drive Up To 10 LSTTL Loads
D Low Power Consumption, 80-µA Max I
CC
D Typical t
pd = 15 ns
D ±4-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D Incorporate Three Enable Inputs to Simplify
Cascading and/or Data Reception
description/ordering information
The SN74HC138 is designed to be used in high-performance memory-decoding or data-routing applications
requiring very short propagation delay times. In high-performance memory systems, this decoder can be used
to minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable
circuit, the 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 decoders is negligible.
The conditions at the binary-select inputs at the three enable inputs select one of eight output lines. Two
active-low and one active-high enable inputs 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.
ORDERING INFORMATION{
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
40
°C to 125°C
SOIC − D
Tape and reel
SN74HC138QDRQ1
HC138Q1
−40
°C to 125°C
TSSOP − PW
Tape and reel
SN74HC138QPWRQ1
HC138Q1
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.
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A
B
C
G2A
G2B
G1
Y7
GND
VCC
Y0
Y1
Y2
Y3
Y4
Y5
Y6
D OR PW PACKAGE
(TOP VIEW)
Copyright
 2008, Texas Instruments Incorporated
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.


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