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SN74LS85N

更新时间： 2024-11-05 23:03:15
品牌 Logo 应用领域
安森美 - ONSEMI 逻辑集成电路光电二极管
页数 文件大小 规格书
8页 137K
描述
LOW POWER SCHOTTKY

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中文翻译

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SN74LS85N 数据手册

 浏览型号SN74LS85N的Datasheet PDF文件第2页浏览型号SN74LS85N的Datasheet PDF文件第3页浏览型号SN74LS85N的Datasheet PDF文件第4页浏览型号SN74LS85N的Datasheet PDF文件第5页浏览型号SN74LS85N的Datasheet PDF文件第6页浏览型号SN74LS85N的Datasheet PDF文件第7页 
The SN74LS85 is a 4-Bit Magnitude Camparator which compares  
two 4-bit words (A, B), each word having four Parallel Inputs  
(A –A , B –B ); A , B being the most significant inputs. Operation  
is not restricted to binary codes, the device will work with any  
monotonic code. Three Outputs are provided: “A greater than B”  
0
3
0
3
3
3
http://onsemi.com  
(O  
), “A less than B” (O  
), “A equal to B” (O  
, allow cascading without external  
). Three  
LOW  
POWER  
SCHOTTKY  
A>B  
A<B  
A=B  
Expander Inputs, I  
gates. For proper compare operation, the Expander Inputs to the least  
significant position must be connected as follows: I  
, I  
, I  
A>B A<B A=B  
= I  
= L,  
A<B  
A>B  
I
= H. For serial (ripple) expansion, the O  
, O  
, I  
and O  
, and I  
A=B  
A>B  
A<B  
A=B  
A=B  
Outputs are connected respectively to the I  
A>B A<B  
Inputs of the next most significant comparator, as shown in Figure 1.  
Refer to Applications section of data sheet for high speed method of  
comparing large words.  
The Truth Table on the following page describes the operation of the  
SN74LS85 under all possible logic conditions. The upper 11 lines  
describe the normal operation under all conditions that will occur in a  
single device or in a series expansion scheme. The lower five lines  
describe the operation under abnormal conditions on the cascading  
inputs. These conditions occur when the parallel expansion technique  
is used.  
16  
1
PLASTIC  
N SUFFIX  
CASE 648  
• Easily Expandable  
• Binary or BCD Comparison  
• O  
, O  
, and O  
Outputs Available  
A>B  
A<B  
A=B  
16  
1
GUARANTEED OPERATING RANGES  
Symbol  
Parameter  
Supply Voltage  
Min  
4.75  
0
Typ  
5.0  
25  
Max  
5.25  
70  
Unit  
V
SOIC  
D SUFFIX  
CASE 751B  
V
CC  
T
A
Operating Ambient  
Temperature Range  
°C  
I
Output Current – High  
Output Current – Low  
–0.4  
8.0  
mA  
mA  
OH  
I
OL  
ORDERING INFORMATION  
Device  
Package  
16 Pin DIP  
16 Pin  
Shipping  
SN74LS85N  
SN74LS85D  
2000 Units/Box  
2500/Tape & Reel  
Semiconductor Components Industries, LLC, 1999  
1
Publication Order Number:  
December, 1999 – Rev. 6  
SN74LS85/D  
12345678

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