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SN74HC645NSRE4 PDF预览

SN74HC645NSRE4

更新时间: 2024-09-19 05:04:47
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
14页 548K
描述
OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SN74HC645NSRE4 数据手册

 浏览型号SN74HC645NSRE4的Datasheet PDF文件第2页浏览型号SN74HC645NSRE4的Datasheet PDF文件第3页浏览型号SN74HC645NSRE4的Datasheet PDF文件第4页浏览型号SN74HC645NSRE4的Datasheet PDF文件第5页浏览型号SN74HC645NSRE4的Datasheet PDF文件第6页浏览型号SN74HC645NSRE4的Datasheet PDF文件第7页 
ꢉ ꢅꢊꢋꢌ ꢍꢎꢀ ꢊ ꢏꢋꢁꢀꢅ ꢐ ꢑꢒ ꢐ ꢏ  
SCLS304B – JANUARY 1996 – REVISED DECEMBER 2002  
D
D
D
Wide Operating Voltage Range of 2 V to 6 V  
D
D
D
D
Typical t = 12 ns  
pd  
±6-mA Output Drive at 5 V  
High-Current 3-State Outputs Can Drive Up  
To 15 LSTTL Loads  
Low Input Current of 1 µA Max  
Low Power Consumption, 80-µA Max I  
CC  
True Logic  
SN54HC645 . . . FK PACKAGE  
(TOP VIEW)  
SN54HC645 . . . J OR W PACKAGE  
SN74HC645 . . . DW, N, OR NS PACKAGE  
(TOP VIEW)  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
DIR  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
V
CC  
3
2
1
20 19  
18  
OE  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
B8  
B1  
B2  
B3  
B4  
B5  
A3  
A4  
A5  
A6  
A7  
4
5
6
7
8
17  
16  
15  
14  
9 10 11 12 13  
GND  
description/ordering information  
These octal bus transceivers are designed for asynchronous two-way communication between data buses.  
These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the  
level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the  
buses are effectively isolated.  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
PACKAGE  
T
A
PDIP – N  
Tube  
SN74HC645N  
SN74HC645N  
Tube  
SN74HC645DW  
SN74HC645DWR  
SN74HC645NSR  
SNJ54HC645J  
SNJ54HC645W  
SNJ54HC645FK  
–40°C to 85°C  
SOIC – DW  
HC645  
Tape and reel  
Tape and reel  
Tube  
SOP – NS  
CDIP – J  
HC645  
SNJ54HC645J  
SNJ54HC645W  
SNJ54HC645FK  
–55°C to 125°C  
CFP – W  
LCCC – FK  
Tube  
Tube  
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design  
guidelines are available at www.ti.com/sc/package.  
FUNCTION TABLE  
INPUTS  
OPERATION  
OE  
L
DIR  
L
B data to A bus  
A data to B bus  
Isolation  
L
H
H
X
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 2002, Texas Instruments Incorporated  
ꢉ ꢙ ꢤ ꢜ ꢛꢧ ꢢꢡ ꢟꢠ ꢡꢛ ꢝꢤ ꢦꢘ ꢞꢙ ꢟ ꢟꢛ ꢮꢑ ꢌꢕ ꢖꢏ ꢯ ꢕꢔꢰꢂ ꢔꢂꢇ ꢞꢦꢦ ꢤꢞ ꢜ ꢞ ꢝꢣ ꢟꢣꢜ ꢠ ꢞ ꢜ ꢣ ꢟꢣ ꢠꢟꢣ ꢧ  
ꢟ ꢣ ꢠ ꢟꢘ ꢙꢭ ꢛꢚ ꢞ ꢦꢦ ꢤꢞ ꢜ ꢞ ꢝ ꢣ ꢟ ꢣ ꢜ ꢠ ꢨ  
ꢢ ꢙꢦ ꢣꢠꢠ ꢛ ꢟꢩꢣ ꢜ ꢫꢘ ꢠꢣ ꢙ ꢛꢟꢣ ꢧꢨ ꢉ ꢙ ꢞꢦ ꢦ ꢛ ꢟꢩꢣ ꢜ ꢤꢜ ꢛ ꢧꢢꢡ ꢟꢠ ꢇ ꢤꢜ ꢛ ꢧꢢꢡ ꢟꢘꢛ ꢙ  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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