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MM74HC191J

更新时间： 2024-11-08 21:54:55
品牌 Logo 应用领域
美国国家半导体 - NSC 计数器逻辑集成电路
页数 文件大小 规格书
8页 205K
描述
MM54HC190/MM74HC190 Synchronous Decade Up/Down Counters with Mode Control MM54HC191/MM74HC191 Synchronous Binary Up/Down Counters with Mode Control

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MM74HC191J 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
HTS代码：8542.39.00.01风险等级：5.21
Is Samacsys：N其他特性：TCO OUTPUT
计数方向：BIDIRECTIONAL系列：HC/UH
JESD-30 代码：R-GDIP-T16JESD-609代码：e0
长度：19.43 mm负载电容（CL）：50 pF
负载/预设输入：YES逻辑集成电路类型：BINARY COUNTER
最大频率@ Nom-Sup：16000000 Hz最大I（ol）：0.004 A
工作模式：SYNCHRONOUS位数：4
功能数量：1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：CERAMIC, GLASS-SEALED封装代码：DIP
封装等效代码：DIP16,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
电源：2/6 V传播延迟（tpd）：55 ns
认证状态：Not Qualified座面最大高度：5.08 mm
子类别：Counters最大供电电压 (Vsup)：6 V
最小供电电压 (Vsup)：2 V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：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
触发器类型：POSITIVE EDGE宽度：7.62 mm
最小 fmax：15 MHzBase Number Matches：1

MM74HC191J 数据手册

 浏览型号MM74HC191J的Datasheet PDF文件第2页浏览型号MM74HC191J的Datasheet PDF文件第3页浏览型号MM74HC191J的Datasheet PDF文件第4页浏览型号MM74HC191J的Datasheet PDF文件第5页浏览型号MM74HC191J的Datasheet PDF文件第6页浏览型号MM74HC191J的Datasheet PDF文件第7页 
January 1988  
MM54HC190/MM74HC190 Synchronous  
Decade Up/Down Counters with Mode  
Control MM54HC191/MM74HC191  
Synchronous Binary Up/Down Counters  
with Mode Control  
General Description  
These high speed synchronous counters utilize advanced  
silicon-gate CMOS technology. They possess the high noise  
immunity and low power consumption of CMOS technology,  
along with the speeds of low power Schottky TTL.  
N dividers by simply modifying the count length with the  
preset inputs.  
Two outputs have been made available to perform the cas-  
cading function: ripple clock and maximum/minimum count.  
The latter output produces a high-level output pulse with a  
duration approximately equal to one complete cycle of the  
clock when the counter overflows or underflows. The ripple  
clock output produces a low-level output pulse equal in  
width to the low-level portion of the clock input when an  
overflow or underflow condition exists. The counters can be  
easily cascaded by feeding the ripple clock output to the  
enable input of the succeeding counter if parallel clocking is  
used, or to the clock input if parallel enabling is used. The  
maximum/minimum count output can be used to accom-  
plish look-ahead for high-speed operation.  
These circuits are synchronous, reversible, up/down count-  
ers. The MM54HC191/MM74HC191 are 4-bit binary count-  
ers and the MM54HC190/MM74HC190 are BCD counters.  
Synchronous operation is provided by having all flip-flops  
clocked simultaneously, so that the outputs change simulta-  
neously when so instructed by the steering logic. This mode  
of operation eliminates the output counting spikes normally  
associated with asynchronous (ripple clock) counters.  
The outputs of the four master-slave flip-flops are triggered  
on a low-to-high level transition of the clock input, if the  
enable input is low. A high at the enable input inhibits count-  
ing. The direction of the count is determined by the level of  
the down/up input. When low, the counter counts up and  
when high, it counts down.  
Features  
Y
Level changes on Enable or Down/Up can be made re-  
gardless of the level of the clock input  
These counters are fully programmable; that is, the outputs  
may be preset to either level by placing a low on the load  
input and entering the desired data at the data inputs. The  
output will change independent of the level of the clock in-  
put. This feature allows the counters to be used as modulo-  
Y
Wide power supply range: 2–6V  
Y
Low quiescent supply current: 80 mA maximum  
(74HC Series)  
Y
Low input current: 1 mA maximum  
Connection Diagram  
Dual-In-Line Package  
Enable  
G
Down/  
Up  
Load  
Clock  
Function  
H
H
L
L
L
L
H
X
X
Count Up  
Count Down  
Load  
u
u
X
X
H
H
X
No Change  
e
Asynchronous inputs Low input to load sets Q  
A,  
A
e
e
e
C, and Q D  
D
Q
B
B, Q  
C
Order Number MM54HC190/191 or MM74HC190/191  
TL/F/5322–1  
Top View  
C
1995 National Semiconductor Corporation  
TL/F/5322  
RRD-B30M105/Printed in U. S. A.  
12345678

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MM74HC191N NSC

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 		MM54HC190/MM74HC190 Synchronous Decade Up/Down Counters with Mode Control MM54HC191/MM74HC
MM74HC191N/B+ NSC

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 		IC,COUNTER,UP/DOWN,4-BIT BINARY,HC-CMOS,DIP,16PIN,PLASTIC
MM74HC191WM NSC

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 		IC,COUNTER,UP/DOWN,4-BIT BINARY,HC-CMOS,SOP,16PIN,PLASTIC
MM74HC192 NSC

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 		Synchronous Decade Up/Down Counters Synchronous Binary Up/Down Counters
MM74HC192J TI

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 		IC HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, CDIP16, D
MM74HC192J/A+ TI

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 		IC,COUNTER,UP/DOWN,DECADE,HC-CMOS,DIP,16PIN,CERAMIC
MM74HC192N TI

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 		HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, PDIP16, DIP-
MM74HC192N FAIRCHILD

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 		Decade Counter, Synchronous, Bidirectional, CMOS, PDIP16,
MM74HC192N/A+ TI

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 		IC,COUNTER,UP/DOWN,DECADE,HC-CMOS,DIP,16PIN,PLASTIC
MM74HC192N/A+ NSC

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 		IC,COUNTER,UP/DOWN,DECADE,HC-CMOS,DIP,16PIN,PLASTIC

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