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74LS168 数据表(PDF) 2 Page - ON Semiconductor

部件名 74LS168
功能描述  BCD DECADE/MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS
PDF  6 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

74LS168 数据表(HTML) 2 Page - ON Semiconductor

  74LS168 Datasheet HTML 1Page - ON Semiconductor 74LS168 Datasheet HTML 2Page - ON Semiconductor 74LS168 Datasheet HTML 3Page - ON Semiconductor 74LS168 Datasheet HTML 4Page - ON Semiconductor 74LS168 Datasheet HTML 5Page - ON Semiconductor 74LS168 Datasheet HTML 6Page - ON Semiconductor  
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5-2
FAST AND LS TTL DATA
SN54/74LS168
• SN54/74LS169
STATE DIAGRAMS
SN54/ 74LS168
UP / DOWN DECADE COUNTER
0123
4
5
6
7
8
9
10
11
12
13
14
15
0123
4
5
6
7
8
9
10
11
12
13
14
15
SN54 / 74LS169
LOGIC DIAGRAMS
TC
PE
CEP
CET
U/D
CP
P0
P1
P2
P3
Q0
Q1
Q2
Q3
CP
D
SN54 / 74LS168
SN54 / 74LS168
UP:
TC = Q0 ⋅ Q3 ⋅ (U / D)
DOWN:
TC = Q0 ⋅ Q1 ⋅ Q2 ⋅ Q3 ⋅ (U / D)
SN54 / 74LS169
UP:
TC = Q0 ⋅ Q1 ⋅ Q2 ⋅ Q3 ⋅ (U / D)
DOWN:
TC = Q0 ⋅ Q1 ⋅ Q2 ⋅ Q3 ⋅ (U / D)
Count Up
Count Down



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