MC84-74HC393 PDF预览

MC84-74HC393

更新时间: 2025-07-18 22:28:19
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安森美 - ONSEMI 计数器
页数 文件大小 规格书
7页 199K
描述
Dual 4-Stage Binary Ripple Counter

MC84-74HC393 数据手册

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SEMICONDUCTOR TECHNICAL DATA  
High–Performance Silicon–Gate CMOS  
J SUFFIX  
CERAMIC PACKAGE  
CASE 632–08  
14  
14  
The MC54/74HC393 is identical in pinout to the LS393. The device inputs  
are compatible with standard CMOS outputs; with pullup resistors, they are  
compatible with LSTTL outputs.  
This device consists of two independent 4–bit binary ripple counters with  
parallel outputs from each counter stage. A ÷ 256 counter can be obtained  
by cascading the two binary counters.  
Internal flip–flops are triggered by high–to–low transitions of the clock  
input. Reset for the counters is asynchronous and active–high. State  
changes of the Q outputs do not occur simultaneously because of internal  
ripple delays. Therefore, decoded output signals are subject to decoding  
spikes and should not be used as clocks or as strobes except when gated  
with the Clock of the HC393.  
1
N SUFFIX  
PLASTIC PACKAGE  
CASE 646–06  
1
D SUFFIX  
SOIC PACKAGE  
CASE 751A–03  
14  
1
Output Drive Capability: 10 LSTTL Loads  
Outputs Directly Interface to CMOS, NMOS, and TTL  
Operating Voltage Range: 2 to 6 V  
ORDERING INFORMATION  
MC54HCXXXJ  
MC74HCXXXN  
MC74HCXXXD  
Ceramic  
Plastic  
SOIC  
Low Input Current: 1 µA  
High Noise Immunity Characteristic of CMOS Devices  
In Compliance with the Requirements Defined by JEDEC Standard  
No. 7A  
Chip Complexity: 236 FETs or 59 Equivalent Gates  
PIN ASSIGNMENT  
CLOCK a  
RESET a  
1
2
3
4
14  
13  
12  
11  
V
CC  
CLOCK b  
RESET b  
LOGIC DIAGRAM  
Q1  
Q2  
a
Q1  
a
b
3, 11  
Q1  
Q3  
5
6
10  
9
Q2  
a
a
b
b
4, 10  
Q2  
Q3  
Q4  
1, 13  
2, 12  
BINARY  
COUNTER  
Q4  
Q3  
CLOCK  
RESET  
5, 9  
6, 8  
GND  
7
8
Q4  
b
FUNCTION TABLE  
Inputs  
PIN 14 = V  
CC  
PIN 7 = GND  
Clock  
Reset  
Outputs  
X
H
L
H
L
L
L
L
L
No Change  
No Change  
No Change  
Advance to  
Next State  
10/95  
REV 6  
Motorola, Inc. 1995  

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