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SN74HCT125 PDF预览

SN74HCT125

更新时间: 2024-11-03 23:03:15
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德州仪器 - TI 输出元件
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描述
QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS

SN74HCT125 数据手册

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SN54HCT125, SN74HCT125  
QUADRUPLE BUS BUFFER GATES  
WITH 3-STATE OUTPUTS  
SCLS069C – NOVEMBER 1988 – REVISED MAY 1997  
SN54HCT125 . . . J OR W PACKAGE  
SN74HCT125 . . . D OR N PACKAGE  
(TOP VIEW)  
Inputs Are TTL-Voltage Compatible  
High-Current 3-State Outputs Drive Bus  
Lines or Buffer Memory Address Registers  
Package Options Include Plastic  
Small-Outline (D) and Ceramic Flat (W)  
Packages, Ceramic Chip Carriers (FK), and  
Standard Plastic (N) and Ceramic (J)  
300-mil DIPs  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
1OE  
1A  
1Y  
2OE  
2A  
2Y  
V
CC  
4OE  
4A  
4Y  
3OE  
3A  
description  
8
GND  
3Y  
These bus buffer gates feature independent line  
drivers with 3-state outputs. Each output is  
disasbled when the associated output-enable  
(OE) input is high.  
SN54HCT125 . . . FK PACKAGE  
(TOP VIEW)  
The SN54HCT125 is characterized for operation  
over the full military temperature range of –55°C  
to 125°C. The SN74HCT125 is characterized for  
operation from –40°C to 85°C.  
3
2
1
20 19  
18  
4A  
NC  
4Y  
1Y  
NC  
4
5
6
7
8
17  
16  
2OE  
NC  
15 NC  
14  
9 10 11 12 13  
FUNCTION TABLE  
(each gate)  
3OE  
2A  
INPUTS  
OUTPUT  
Y
OE  
A
H
L
L
L
H
L
NC – No internal connection  
H
X
Z
logic symbol  
1
1OE  
2
EN  
3
1Y  
1B  
4
2OE  
5
6
2Y  
2B  
10  
3OE  
3B  
8
9
3Y  
13  
12  
4OE  
4B  
11  
4Y  
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.  
Pin numbers shown are for the D, J, N, and W packages.  
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  
UNLESS OTHERWISE NOTED this document contains PRODUCTION  
DATA information 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  

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