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參數(shù)資料
| 型號(hào)： | 74LS85 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | LOW POWER SCHOTTKY |
| 中文描述： | 低功耗肖特基 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 133K |
| 代理商： | 74LS85 |
Semiconductor Components Industries, LLC, 1999
December, 1999 – Rev. 6
1
Publication Order Number:
SN74LS85/D
The SN74LS85 is a 4-Bit Magnitude Camparator which compares
two 4-bit words (A, B), each word having four Parallel Inputs
(A
0
–A
3
, B
0
–B
3
); A
3
, B
3
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”
(O
A>B
), “A less than B” (O
A<B
), “A equal to B” (O
A=B
). Three
Expander Inputs, I
A>B
, I
A<B
, I
A=B
, allow cascading without external
gates. For proper compare operation, the Expander Inputs to the least
significant position must be connected as follows: I
A<B
= I
A>B
= L,
I
A=B
= H. For serial (ripple) expansion, the O
A>B
, O
A<B
and O
A=B
Outputs are connected respectively to the I
A>B
, I
A<B
, and I
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.
Easily Expandable
Binary or BCD Comparison
O
A>B
, O
A<B
, and O
A=B
Outputs Available
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
V
CC
Supply Voltage
4.75
5.0
5.25
V
T
A
Operating Ambient
Temperature Range
0
25
70
°
C
I
OH
Output Current – High
–0.4
mA
I
OL
Output Current – Low
8.0
mA
LOW
POWER
SCHOTTKY
Device
Package
Shipping
ORDERING INFORMATION
SN74LS85N
16 Pin DIP
2000 Units/Box
SN74LS85D
16 Pin
SOIC
D SUFFIX
CASE 751B
http://onsemi.com
2500/Tape & Reel
PLASTIC
N SUFFIX
CASE 648
16
1
16
1
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|---|---|
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LS85 WAF | 制造商:Texas Instruments 功能描述: |
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| 74LS85N | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 74LS85N 91 | 制造商:Motorola 功能描述:74LS85N |
| 74LS85N91 | 制造商:Motorola 功能描述:74LS85N |
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