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SN74ALS245A

更新时间： 2024-11-11 23:06:15
品牌 Logo 应用领域
德州仪器 - TI 总线收发器输出元件
页数 文件大小 规格书
7页 114K
描述
OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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SN74ALS245A 数据手册

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SN54ALS245A, SN54AS245, SN74ALS245A, SN74AS245  
OCTAL BUS TRANSCEIVERS  
WITH 3-STATE OUTPUTS  
SDAS272 – NOVEMBER 1994  
SN54ALS245A, SN54AS245 . . . J PACKAGE  
SN74ALS245A, SN74AS245 . . . DW OR N PACKAGE  
(TOP VIEW)  
• 3-State Outputs Drive Bus Lines Directly  
• pnp Inputs Reduce dc Loading  
• Package Options Include Plastic  
Small-Outline (DW) Packages, Ceramic  
Chip Carriers (FK), and Standard Plastic (N)  
and Ceramic (J) 300-mil DIPs  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
DIR  
A1  
V
CC  
OE  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
B8  
A2  
A3  
description  
A4  
A5  
These octal bus transceivers are designed for  
asynchronous two-way communication between  
data buses. The control-function implementation  
minimizes external timing requirements.  
A6  
A7  
A8  
GND  
The devices allow data transmission from the  
A bus to the B bus or from the B bus to the A bus  
depending upon the logic level at the  
direction-control (DIR) input. The output-enable  
(OE) input can be used to disable the device so  
that the buses are effectively isolated.  
SN54ALS245A, SN54AS245 . . . FK PACKAGE  
(TOP VIEW)  
The -1 version of the SN74ALS245A is identical to  
the standard version, except that the  
3
2
1
20 19  
18  
B1  
B2  
B3  
B4  
B5  
A3  
A4  
A5  
A6  
A7  
4
5
6
7
8
17  
16  
15  
14  
recommended maximum I  
is increased to  
OL  
48 mA. There is no -1 version of the  
SN54ALS245A.  
9 10 11 12 13  
The SN54ALS245A and SN54AS245 are  
characterized for operation over the full military  
temperature range of –55°C to 125°C. The  
SN74ALS245A  
and  
SN74AS245  
are  
characterized for operation from 0°C to 70°C.  
FUNCTION TABLE  
INPUTS  
OPERATION  
OE  
L
DIR  
L
B data to A bus  
A data to B bus  
Isolation  
L
H
H
X
Copyright 1994, 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  
1234567

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SN74ALS245A 替代型号

型号 品牌 替代类型 描述 数据表
SN54ALS245A TI

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