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參數(shù)資料
| 型號(hào)： | MM54HC147 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 10-to-4 Line Priority Encoder |
| 中文描述： | 10到4線優(yōu)先編碼器 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 108K |
| 代理商： | MM54HC147 |
TL/F/5007
M
November 1995
MM54HC147/MM74HC147
10-to-4 Line Priority Encoder
General Description
This high speed 10-to-4 Line Priority Encoder utilizes ad-
vanced silicon-gate CMOS technology. It possesses the
high noise immunity and low power consumption of stan-
dard CMOS integrated circuits. This device is fully buffered,
giving it a fanout of 10 LS-TTL loads.
The MM54HC147/MM74HC147 features priority encoding
of the inputs to ensure that only the highest order data line
is encoded. Nine input lines are encoded to a four line BCD
output. The implied decimal zero condition requires no input
condition as zero is encoded when all nine data lines are at
a high logic level. All data inputs and outputs are active at
the low logic level.
The 54HC/74HC logic family is functionally as well as pin-
out compatible with the standard 54LS/74LS logic family.
All inputs are protected from damage due to static dis-
charge by internal diode clamps to V
CC
and ground.
Features
Y
Low quiescent power consumption: 40
m
W maximum at
25
§
C
Y
High speed: 31 ns propagation delay (typical)
Y
Low input current: 1
m
A maximum
Y
Wide supply range: 2V to 6V
Connection and Logic Diagrams
Dual-In-Line Package
TL/F/5007–1
Top View
Order Number MM54HC147 or MM74HC147
Truth Table
Inputs
Outputs
1
2
3
4
5
6
7
8
9
D
C
B
A
H
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
L
H
H
X
X
X
X
X
X
L
H
H
H
X
X
X
X
X
L
H
H
H
H
X
X
X
X
L
H
H
H
H
H
X
X
X
L
H
H
H
H
H
H
X
X
L
H
H
H
H
H
H
H
X
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
L
L
H
H
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
e
High Logic Level, L
e
Low Logic Level, X
e
Irrelevant
TL/F/5007–2
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM54HC147J/883QS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| MM54HC14W/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MM54HC151J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MM54HC153 WAF | 制造商:Texas Instruments 功能描述: |
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