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SN74LVC138A-Q1 PDF预览

SN74LVC138A-Q1

更新时间： 2024-11-20 02:58:55
品牌 Logo 应用领域
德州仪器 - TI 解码器解复用器
页数 文件大小 规格书
8页 198K
描述
3-LINETO 8-LINE DECODER/DEMULTIPLEXER

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中文翻译

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SN74LVC138A-Q1 数据手册

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SCAS708A − SEPTEMBER 2003 − REVISED MAY 2004  
D
Qualification in Accordance With  
AEC-Q100  
D
Typical V  
(Output V  
= 3.3 V, T = 25°C  
Undershoot)  
OHV  
OH  
†
>2 V at V  
CC A  
D
Qualified for Automotive Applications  
D OR PW PACKAGE  
(TOP VIEW)  
D
Customer-Specific Configuration Control  
Can Be Supported Along With  
Major-Change Approval  
1
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5
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8
16  
15  
14  
V
Y0  
Y1  
A
B
C
CC  
D
ESD Protection Exceeds 2000 V Per  
MIL-STD-883, Method 3015; Exceeds 200 V  
Using Machine Model (C = 200 pF, R = 0)  
13 Y2  
12  
G2A  
G2B  
G1  
Y7  
GND  
Y3  
D
D
D
D
Operates From 2 V to 3.6 V  
11 Y4  
10 Y5  
Inputs Accept Voltages to 5.5 V  
Max t of 5.8 ns at 3.3 V  
pd  
9
Y6  
Typical V  
<0.8 V at V  
(Output Ground Bounce)  
OLP  
CC  
= 3.3 V, T = 25°C  
A
†
Contact factory for details. Q100 qualification data available on  
request.  
description/ordering information  
The SN74LVC138A 3-line to 8-line decoder/demultiplexer is designed for 2.7-V to 3.6-V V  
operation.  
CC  
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.  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
‡
PACKAGE  
T
A
SOIC − D  
Reel of 2500  
Reel of 2000  
SN74LVC138AQDRQ1  
SN74LVC138AQPWRQ1  
L138AQ1  
L138AQ1  
−40°C to 125°C  
TSSOP − PW  
‡
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.  
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Copyright 2004, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
12345678

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