參數(shù)資料
型號(hào)： MM54HC42J
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 通用總線功能
英文描述： BCD-to-Decimal Decoder
中文描述： HC/UH SERIES, DECIMAL DECODER/DRIVER, INVERTED OUTPUT, CDIP16
封裝： DIP-16
文件頁(yè)數(shù)： 1/4頁(yè)
文件大?。?/td> 149K
代理商： MM54HC42J
TL/F/5301
M
January 1988
MM54HC42/MM74HC42
BCD-to-Decimal Decoder
General Description
This decoder utilizes advanced silicon-gate CMOS technol-
ogy. Data on the four input pins select one of the 10 outputs
corresponding to the value of the BCD number on the in-
puts. An output will go low when selected, otherwise it re-
mains high. If the input data is not a valid BCD number all
outputs will remain high. The circuit has high noise immunity
and low power consumption usually associated with CMOS
circuitry, yet also has speeds comparable to low power
Schottky TTL (LS-TTL) circuits, and is capable of driving 10
LS-TTL equivalent loads.
All inputs are protected from damage due to static dis-
charge by diodes to V
CC
and ground.
Features
Y
Typical propagation delay: 15 ns
Y
Wide supply range: 2V–6V
Y
Low quiescent current: 80
m
A (74HC)
Y
Fanout of 10 LS-TTL loads
Connection Diagram
Dual-in-line Package
TL/F/5301–1
Top View
Order Number MM54HC42 or MM74HC42
Logic Diagram
Truth Table
No.
Inputs
D C B A
L
L
L
L
L
L
L
L
L
H
L
H
L
H H
L
H H H H H H H H H H
H
L
L
L
H H H H H H H H
H
L
L
H H H H H H H H H H
H
L
H
L
H H H H H H H H H H
H
L
H H H H H H H H H H H H
H H
L
L
H H H H H H H H H H
H H
L
H H H H H H H H H H H
H H H
L
H H H H H H H H H H
H H H H H H H H H H H H H H
Outputs
4
0
L
1
H H H H H H H H H
L
H H H H H H H H
H H
L
H H H H H H H
H H H H H
L
L
L
H H H H
L
H H H H H H
L
H H H H H H
2
3
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
L
L
H
L
H H
L
H H H H H H
L
H H H H H
L
H H H H
L
H H H
L
H H
L
H
L
INVALID
H
e
High Level, L
e
Low Level
TL/F/5301–2
C
1995 National Semiconductor Corporation
RRD-B30M105/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
MM54HC42N 制造商:NSC 制造商全稱:National Semiconductor 功能描述:BCD-to-Decimal Decoder
MM54HC4511 制造商:NSC 制造商全稱:National Semiconductor 功能描述:BCD-to-7 Segment Latch/Decoder/Driver
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MM54HC4511E/883 制造商:Rochester Electronics LLC 功能描述:- Bulk
MM54HC4511J 制造商:NSC 制造商全稱:National Semiconductor 功能描述:BCD-to-7 Segment Latch/Decoder/Driver
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