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SN74LS169D

更新时间： 2024-11-18 23:06:19
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA 计数器
页数 文件大小 规格书
8页 274K
描述
BCD DECADE/MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS

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SN74LS169D 数据手册

 浏览型号SN74LS169D的Datasheet PDF文件第2页浏览型号SN74LS169D的Datasheet PDF文件第3页浏览型号SN74LS169D的Datasheet PDF文件第4页浏览型号SN74LS169D的Datasheet PDF文件第5页浏览型号SN74LS169D的Datasheet PDF文件第6页浏览型号SN74LS169D的Datasheet PDF文件第7页 
SN54/74LS168  
SN54/74LS169  
BCD DECADE/MODULO  
16 BINARY SYNCHRONOUS  
BI-DIRECTIONAL COUNTERS  
BCD DECADE/MODULO  
16 BINARY SYNCHRONOUS  
BI-DIRECTIONAL COUNTERS  
The SN54/74LS168 and SN54/74LS169 are fully synchronous 4-stage  
up/down counters featuring a preset capability for programmable operation,  
carry lookahead for easy cascading and a U/D input to control the direction  
of counting. The SN54/74LS168 counts in a BCD decade (8, 4, 2, 1)  
sequence, while the SN54/74LS169 operates in a Modulo 16 binary  
sequence. All state changes, whether in counting or parallel loading, are  
initiated by the LOW-to-HIGH transition of the clock.  
LOW POWER SCHOTTKY  
• Low Power Dissipation 100 mW Typical  
• High-Speed Count Frequency 30 MHz Typical  
• Fully Synchronous Operation  
• Full Carry Lookahead for Easy Cascading  
• Single Up/Down Control Input  
J SUFFIX  
CERAMIC  
CASE 620-09  
16  
1
• Positive Edge-Trigger Operation  
• Input Clamp Diodes Limit High-Speed Termination Effects  
N SUFFIX  
PLASTIC  
CASE 648-08  
CONNECTION DIAGRAM DIP (TOP VIEW)  
16  
1
NOTE:  
The Flatpak version  
has the same pinouts  
(Connection Diagram) as  
the Dual In-Line Package.  
D SUFFIX  
SOIC  
CASE 751B-03  
16  
1
ORDERING INFORMATION  
SN54LSXXXJ  
Ceramic  
SN74LSXXXN Plastic  
SN74LSXXXD SOIC  
PIN NAMES  
LOADING (Note a)  
HIGH  
LOW  
CEP  
CET  
CP  
PE  
U/D  
Count Enable Parallel (Active LOW) Input  
0.5 U.L.  
1.0 U.L.  
0.5 U.L.  
0.5 U.L.  
0.5 U.L.  
0.5 U.L.  
0.25 U.L.  
0.5 U.L.  
0.25 U.L.  
0.25 U.L.  
0.25 U.L.  
0.25 U.L.  
LOGIC SYMBOL  
Count Enable Trickle (Active LOW) Input  
Clock Pulse (Active positive going edge) Input  
Parallel Enable (Active LOW) Input  
Up-Down Count Control Input  
Parallel Data Inputs  
P –P  
0
3
3
Q –Q  
0
Flip-Flop Outputs  
Terminal Count (Active LOW) Output  
10 U.L. 5 (2.5) U.L.  
10 U.L. 5 (2.5) U.L.  
TC  
NOTES:  
a. 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.  
b. The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)  
b. Temperature Ranges.  
FAST AND LS TTL DATA  
5-302  
12345678

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SN74LS170D TI

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 		4-BY-4 REGISTER FILES WITH OPEN-COLLECTOR OUTPUTS

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