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參數(shù)資料
| 型號(hào)： | MM74HC85J |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4-Bit Magnitude Comparator |
| 中文描述： | HC/UH SERIES, 4-BIT MAGNITUDE COMPARATOR, TRUE OUTPUT, CDIP16 |
| 封裝： | J16A, 16 PIN |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 168K |
| 代理商： | MM74HC85J |
TL/F/5205
M
November 1995
MM54HC85/MM74HC85
4-Bit Magnitude Comparator
General Description
The MM54HC85/MM74HC85 is a 4-bit magnitude compara-
tor that utilizes advanced silicon-gate CMOS technology. It
is designed for high speed comparison of two four bit words.
This circuit has eight comparison inputs, 4 for each word;
three cascade inputs (A
k
B, A
l
B, A
e
B); and three deci-
sion outputs (A
k
B, A
l
B, A
e
B). The result of a comparison
is indicated by a high level on one of the decision outputs.
Thus it may be determined whether one word is ‘‘greater
than,’’ ‘‘less than,’’ or ‘‘equal to’’ the other word. By con-
necting the outputs of the least significant stage to the cas-
cade inputs of the next stage, words of greater than four bits
can be compared. In addition the least significant stage
must have a high level applied to the A
e
B input, and a low
level to the A
k
B, and A
l
B inputs.
The comparator’s outputs can drive 10 low power Schottky
TTL (LS-TTL) equivalent loads, and is functionally, and pin
equivalent to the 54LS85/74LS85. All inputs are protected
from damage due to static discharge by diodes to V
CC
and
ground.
Features
Y
Typical propagation delay: 27 ns
Y
Wide operating voltage range: 2–6V
Y
Low input current: 1
m
A maximum
Y
Low quiescent current: 80
m
A maximum (74HC Series)
Y
Output drive capability: 10 LS-TTL loads
Connection Diagram
Dual-In-Line Package
TL/F/5205–1
Order Number MM54HC85 or MM74HC85
Truth Table
Comparing
Inputs
Cascading
Inputs
Outputs
A3, B3
A2, B2
A1, B1
A0, B0
A
l
B
A
k
B
A
e
B
A
l
B
A
k
B
A
e
B
A3
l
B3
A3
k
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
A3
e
B3
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
X
H
L
X
X
X
X
X
X
X
X
L
H
X
H
L
X
X
X
X
X
X
X
X
L
L
H
L
L
H
L
H
L
H
L
H
L
H
L
L
L
H
L
H
L
H
L
H
L
H
L
H
L
L
H
L
L
L
L
L
L
L
L
L
L
H
L
L
A2
l
B2
A2
k
B2
A2
e
B2
A2
e
B2
A2
e
B2
A2
e
B2
A2
e
B2
A2
e
B2
A2
e
B2
A2
e
B2
A2
e
B2
A1
l
B1
A1
k
B1
A1
e
B1
A1
e
B1
A1
e
B1
A1
e
B1
A1
e
B1
A1
e
B1
A1
e
B1
A0
l
B0
A0
k
B0
A0
e
B0
A0
e
B0
A0
e
B0
A0
e
B0
A0
e
B0
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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| MM74HC85N | 4-Bit Magnitude Comparator |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM74HC85N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:4-Bit Magnitude Comparator |
| MM74HC86 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Quad 2-Input Exclusive OR Gate |
| MM74HC86_12 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Quad 2-Input Exclusive OR Gate |
| MM74HC86J | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| MM74HC86M | 功能描述:邏輯門 Quad 2-Input OR Gate RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時(shí)間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
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