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SN74F623 PDF预览

SN74F623

更新时间: 2024-11-20 22:53:35
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德州仪器 - TI 总线收发器输出元件
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5页 79K
描述
OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SN74F623 数据手册

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SN54F623, SN74F623  
OCTAL BUS TRANSCEIVERS  
WITH 3-STATE OUTPUTS  
SDFS087 – MARCH 1987 – REVISED OCTOBER 1993  
SN54F623 . . . J PACKAGE  
SN74F623 . . . DW OR N PACKAGE  
(TOP VIEW)  
Local Bus-Latch Capability  
Noninverting Logic  
Package Options Include Plastic  
Small-Outline Packages, Ceramic Chip  
Carriers, and Standard Plastic and Ceramic  
300-mil DIPs  
OEAB  
A1  
V
CC  
OEBA  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
GND  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
description  
These octal bus transceivers are designed for  
asynchronous communication between data  
buses. Thecontrolfunctionimplementationallows  
for maximum flexibility in timing.  
11 B8  
These 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 levels at the output  
enable (OEAB and OEBA) inputs.  
SN54F623 . . . FK PACKAGE  
(TOP VIEW)  
The output-enable inputs can be used to disable  
the device so that the buses are effectively  
isolated. The dual-enable configuration gives the  
transceivers the capability of storing data by  
simultaneously enabling OEAB and OEBA. Each  
output reinforces its input in this configuration.  
When both OEAB and OEBA are enabled and all  
other data sources to the two sets of bus lines are  
at high impedance, both sets of bus lines (16 in all)  
will remain at their last states.  
3
2
1
20 19  
18  
B1  
17 B2  
A3  
A4  
A5  
A6  
A7  
4
5
6
7
8
16  
15  
14  
B3  
B4  
B5  
9 10 11 12 13  
The SN54F623 is characterized for operation over  
the full military temperature range of 55°C to  
125°C. The SN74F623 is characterized for  
operation from 0°C to 70°C.  
FUNCTION TABLE  
INPUTS  
OPERATION  
OEBA  
OEAB  
L
L
B data to A bus  
B data to A bus,  
A data to B bus  
L
H
H
H
L
Isolation  
H
A data to B bus  
Copyright 1993, 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.  
2–1  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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