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MM74HCT147

更新时间: 2024-01-06 04:05:10
品牌 Logo 应用领域
美国国家半导体 - NSC 编码器
页数 文件大小 规格书
4页 101K
描述
10-to-4 Line Priority Encoder

MM74HCT147 技术参数

是否Rohs认证:不符合生命周期:Obsolete
包装说明:DIP, DIP16,.3Reach Compliance Code:unknown
风险等级:5.92Is Samacsys:N
JESD-30 代码:R-PDIP-T16JESD-609代码:e0
逻辑集成电路类型:ENCODER端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP16,.3封装形状:RECTANGULAR
封装形式:IN-LINE电源:5 V
子类别:Arithmetic Circuits标称供电电压 (Vsup):5 V
表面贴装:NO技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUALBase Number Matches:1

MM74HCT147 数据手册

 浏览型号MM74HCT147的Datasheet PDF文件第2页浏览型号MM74HCT147的Datasheet PDF文件第3页浏览型号MM74HCT147的Datasheet PDF文件第4页 
PRELIMINARY  
November 1995  
MM54HCT147/MM74HCT147  
10-to-4 Line Priority Encoder  
General Description  
This priority encoder utilizes advanced silicon-gate CMOS  
technology. It has the high noise immunity and low power  
consumption typical of CMOS circuits, as well as the speeds  
and output drive similar to LS-TTL.  
MM54HCT/MM74HCT devices are intended to interface be-  
tween TTL and NMOS components and standard CMOS  
devices. These parts are also plug in replacements for LS-  
TTL devices and can be used to reduce power comsump-  
tion in existing designs.  
This priority encoder accepts 9 input request lines 1–9 and  
outputs 4 line BCD. The priority encoding ensures that only  
the highest order data line is encoded. The implied decimal  
zero condition requires no input condition as zero is encod-  
ed when all nine data lines are at a high logic level. All data  
inputs and outputs are active at low logic level.  
Features  
Y
Low quiescent power consumption:  
40 mW maximum at 25 C  
§
High speed: 13 ns propagation delay (typical)  
Y
Very low input current: 10b mA typical  
5
Y
All inputs are protected from damage due to static dis-  
and ground.  
charge by internal diode clamps to V  
CC  
Connection and Logic Diagrams  
Dual-In-Line Package  
TL/F/9397–1  
Order Number MM54HCT147 or MM74HCT147  
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
X
X
X
X
X
X
L
H
X
X
X
X
X
L
H
X
X
X
X
L
H
X
X
X
L
H
X
X
L
H
X
L
H
L
H
L
H
H
H
L
H
H
H
L
H
L
H
H
H
H
H
H
H
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
L
H
H
H
H
H
L
H
H
L
TL/F/9397–2  
H
H
H
H
L
H
L
H
H
H
H
H
H
H
H
L
H
L
H
H
e
e
e
H
High Logic Level, L  
Low Logic Level, X  
Irrelevant  
C
1995 National Semiconductor Corporation  
TL/F/9397  
RRD-B30M115/Printed in U. S. A.  

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