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SN74LS642DW PDF预览

SN74LS642DW

更新时间: 2024-11-20 23:06:23
品牌 Logo 应用领域
安森美 - ONSEMI 逻辑集成电路光电二极管输出元件
页数 文件大小 规格书
8页 145K
描述
LOW POWER SCHOTTKY

SN74LS642DW 数据手册

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These octal bus transceivers are designed for asynchronous  
two-way communication between data buses. Control function  
implementation minimizes external timing requirements. These  
circuits allow data transmission from the A bus to B or from the B bus  
to A bus depending upon the logic level of the direction control (DIR)  
input. Enable input (G) can disable the device so that the buses are  
effectively isolated.  
http://onsemi.com  
LOW  
POWER  
SCHOTTKY  
DEVICE  
LS640  
LS641  
LS642  
LS645  
OUTPUT  
3-State  
Open-Collector  
Open-Collector  
3-State  
LOGIC  
Inverting  
True  
Inverting  
True  
FUNCTION TABLE  
20  
CONTROL  
INPUTS  
OPERATION  
1
LS640  
LS642  
LS641  
LS645  
PLASTIC  
N SUFFIX  
CASE 738  
G
DIR  
L
L
L
B data to A bus  
A data to B bus  
Isolation  
B data to A bus  
A data to B bus  
Isolation  
H
H
X
H = HIGH Level, L = LOW Level, X = Irrelevant  
20  
GUARANTEED OPERATING RANGES (SN74LS640, SN74LS645)  
1
Symbol  
Parameter  
Supply Voltage  
Min  
4.75  
0
Typ  
5.0  
25  
Max  
5.25  
70  
Unit  
V
SOIC  
DW SUFFIX  
CASE 751D  
V
CC  
T
A
Operating Ambient  
Temperature Range  
°C  
I
Output Current – High  
3.0  
15  
24  
mA  
mA  
mA  
OH  
I
Output Current – Low  
OL  
ORDERING INFORMATION  
GUARANTEED OPERATING RANGES (SN74LS641, SN74LS642)  
Device  
Package  
16 Pin DIP  
16 Pin  
Shipping  
Symbol  
Parameter  
Supply Voltage  
Min  
4.75  
0
Typ  
5.0  
25  
Max  
5.25  
70  
Unit  
V
SN74LS640N  
SN74LS640DW  
SN74LS641N  
SN74LS641DW  
SN74LS642N  
SN74LS642DW  
SN74LS645N  
SN74LS645DW  
1440 Units/Box  
2500/Tape & Reel  
1440 Units/Box  
2500/Tape & Reel  
1440 Units/Box  
2500/Tape & Reel  
1440 Units/Box  
2500/Tape & Reel  
V
CC  
T
A
Operating Ambient  
Temperature Range  
°C  
16 Pin DIP  
16 Pin  
V
Output Voltage – High  
Output Current – Low  
5.5  
24  
V
OH  
OL  
I
mA  
16 Pin DIP  
16 Pin  
16 Pin DIP  
16 Pin  
Semiconductor Components Industries, LLC, 1999  
1
Publication Order Number:  
December, 1999 – Rev. 6  
SN74LS640/D  

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LOW POWER SCHOTTKY