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SN54LS390J PDF预览

SN54LS390J

更新时间: 2024-11-20 23:03:07
品牌 Logo 应用领域
安森美 - ONSEMI 计数器触发器逻辑集成电路
页数 文件大小 规格书
5页 75K
描述
DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER

SN54LS390J 数据手册

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SN54/74LS390  
SN54/74LS393  
DUAL DECADE COUNTER;  
DUAL 4-STAGE  
BINARY COUNTER  
DUAL DECADE COUNTER;  
DUAL 4-STAGE  
TheSN54/74LS390andSN54/74LS393eachcontainapairofhigh-speed  
4-stage ripple counters. Each half of the LS390 is partitioned into a  
divide-by-two section and a divide-by five section, with a separate clock input  
for each section. The two sections can be connected to count in the 8.4.2.1  
BCD codeortheycancountinabiquinarysequencetoprovideasquarewave  
(50% duty cycle) at the final output.  
BINARY COUNTER  
LOW POWER SCHOTTKY  
Each half of the LS393 operates as a Modulo-16 binary divider, with the last  
three stages triggered in a ripple fashion. In both the LS390 and the LS393,  
the flip-flops are triggered by a HIGH-to-LOW transition of their CP inputs.  
Each half of each circuit type has a Master Reset input which responds to a  
HIGH signal by forcing all four outputs to the LOW state.  
J SUFFIX  
CERAMIC  
CASE 620-09  
Dual Versions of LS290 and LS293  
16  
1
LS390 has Separate Clocks Allowing ÷2, ÷2.5, ÷5  
Individual Asynchronous Clear for Each Counter  
Typical Max Count Frequency of 50 MHz  
N SUFFIX  
PLASTIC  
Input Clamp Diodes Minimize High Speed Termination Effects  
CASE 648-08  
16  
1
CONNECTION DIAGRAM DIP (TOP VIEW)  
D SUFFIX  
SOIC  
CASE 751B-03  
SN54/74LS390  
16  
V
CP  
MR  
Q
CP  
Q
Q
Q
3
1
CC  
0
0
1
1
2
16  
15  
14  
13  
12  
11  
10  
9
J SUFFIX  
CERAMIC  
CASE 632-08  
14  
1
1
2
3
4
CP  
5
6
8
7
N SUFFIX  
PLASTIC  
CP  
MR  
Q
Q
Q
Q
3
GND  
0
0
1
1
2
NOTE:  
CASE 646-06  
The Flatpak version  
has the same pinouts  
(Connection Diagram) as  
the Dual In-Line Package.  
14  
SN54/74LS393  
1
V
CP  
13  
MR  
Q
Q
Q
Q
3
CC  
0
1
2
14  
12  
11  
10  
9
8
D SUFFIX  
SOIC  
CASE 751A-02  
14  
1
ORDERING INFORMATION  
1
2
3
4
5
6
7
SN54LSXXXJ  
Ceramic  
CP  
MR  
Q
Q
Q
Q
3
GND  
0
1
2
SN74LSXXXN Plastic  
SN74LSXXXD SOIC  
FAST AND LS TTL DATA  
5-1  

SN54LS390J 替代型号

型号 品牌 替代类型 描述 数据表
SN74LS393N TI

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SN74LS93N TI

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