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SN74HC540

更新时间： 2024-11-21 23:03:15
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德州仪器 - TI 驱动器输出元件
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6页 96K
描述
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS

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SN74HC540 数据手册

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SN54HC540, SN74HC540  
OCTAL BUFFERS AND LINE DRIVERS  
WITH 3-STATE OUTPUTS  
SCLS007B – MARCH 1984 – REVISED MAY 1997  
SN54HC540 . . . J OR W PACKAGE  
SN74HC540 . . . DW OR N PACKAGE  
(TOP VIEW)  
High-Current 3-State Outputs Drive Bus  
Lines Directly or up to 15 LSTTL Loads  
Data Flow-Through Pinout (All Inputs on  
Opposite Side From Outputs)  
OE1  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
V
CC  
OE2  
Y1  
1
2
3
4
5
6
7
8
9
20  
19  
18  
Package Options Include Plastic (DW) and  
Ceramic Flat (W) Packages, Ceramic Chip  
Carriers (FK), and Standard Plastic (N) and  
Ceramic (J) 300-mil DIPs  
17 Y2  
16 Y3  
15 Y4  
14 Y5  
13 Y6  
12 Y7  
11 Y8  
description  
These octal buffers and line drivers feature the  
performance of the popular ’HC240 series and  
offer a pinout with inputs and outputs on opposite  
sides of the package. This arrangement greatly  
enhances printed circuit board layout.  
GND 10  
SN54HC540 . . . FK PACKAGE  
(TOP VIEW)  
The 3-state control gate is a 2-input NOR. If either  
output-enable (OE1 or OE2) input is high, all eight  
outputs are in the high-impedance state. The  
’HC540 provide inverted data at the outputs.  
3
2
1
20 19  
18  
Y1  
Y2  
Y3  
Y4  
Y5  
A3  
A4  
A5  
A6  
A7  
4
5
6
7
8
The SN54HC540 is characterized for operation  
over the full military temperature range of –55°C  
to 125°C. The SN74HC540 is characterized for  
operation from –40°C to 85°C.  
17  
16  
15  
14  
9 10 11 12 13  
FUNCTION TABLE  
(each buffer/driver)  
INPUTS  
OUTPUT  
Y
OE1  
L
OE2  
L
A
L
H
L
L
L
H
X
X
H
X
Z
Z
X
H
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.  
Copyright 1997, Texas Instruments Incorporated  
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.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
123456

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SN74HC540 替代型号

型号 品牌 替代类型 描述 数据表
SN54HC540 TI

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