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HD74LV163A Datasheet, PDF (8/19 Pages) Hitachi Semiconductor – Synchronous 4-bit Binary Counter (Synchronous Clear) | |||
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HD74LV163A
Switching Characteristics
⢠VCC = 2.5 ± 0.2 V
Ta = 25°C
Ta = â40 to 85°C
Item
Maximum
clock
frequency
Propa-
gation
delay time
Setup time
Symbol
fmax
tPLH/tPHL
tPLH/tPHL
Count
mode
tPLH/tPHL
Load
mode
tPLH/tPHL
tsu
Min
50
30
â
â
â
â
â
â
â
â
7.5
10.0
9.5
Typ Max Min
90 â 40
60 â 25
11.1 16.2 1.0
14.3 19.2 1.0
11.5 17.0 1.0
14.7 20.0 1.0
13.8 20.6 1.0
17.0 23.6 1.0
10.3 15.7 1.0
14.0 18.7 1.0
â â 8.5
â â 11.5
â â 11.0
Max
â
â
19.5
22.5
20.5
23.5
24.5
27.5
19.0
22.0
â
â
â
Hold time th
Pulse
tw
width
6.0 â â 6.0
â
1.5 â â 1.5
â
1.5 â â 1.5
â
7.0 â â 7.0
â
Unit
MHz
ns
ns
ns
ns
Test Conditions
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
FROM
(Input)
TO
(Output)
CLK
Q
CLK
Carry
CLK
Carry
ENT
Carry
Data before CLK â
LOAD before CLK â
ENT, ENP before
CLK â
CLR before CLK â
CLR after CLK â
CLK H or L
8
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