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HD74LV161A Datasheet, PDF (9/16 Pages) Hitachi Semiconductor – Synchronous 4-bit Binary Counter (Direct Clear) | |||
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HD74LV161A
Switching Characteristics (cont)
Item
Maximum clock
frequency
Propagation
delay time
Setup time
Symbol
fmax
tPLH/tPHL
tPLH/tPHL
Count mode
tPLH/tPHL
Load mode
tPLH/tPHL
tPHL
tPHL
tsu
Ta = 25°C
Min Typ
135 185
95 125
â 4.9
â 8.7
â 4.9
â 6.4
â 6.2
â 7.7
â 4.9
â 6.4
â 5.5
â 7.0
â 5.0
â 6.5
4.5 â
5.0 â
5.0 â
1.5 â
Hold time
th
Pulse width
tw
1.0 â
5.0 â
5.0 â
Max
â
â
8.1
10.1
8.1
10.1
10.3
12.3
8.1
10.1
9.0
11.0
8.6
10.6
â
â
â
â
â
â
â
Ta = â40 to 85°C
Min
Max
115
â
85
â
1.0
9.5
1.0
11.5
1.0
9.5
1.0
11.5
1.0
12.0
1.0
14.0
1.0
9.5
1.0
11.5
1.0
10.5
1.0
12.5
1.0
10.0
1.0
12.0
4.5
â
6.0
â
6.0
â
1.5
â
1.0
â
5.0
â
5.0
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
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
VCC = 5.0 ± 0.5 V
FROM TO
(Input) (Output)
CLK
Q
CLK
Carry
CLK
Carry
ENT
Carry
CLR
Q
CLR
Carry
Data before CLK â
LOAD before CLK â
ENT, ENP before
CLK â
CLR inactive before
CLK â
CLK H or L
CLR L
Operating Characteristics
CL = 50 pF
Ta = 25°C
Item
Symbol VCC (V) Min
Typ
Max
Unit Test Conditions
Power dissipation capacitance CPD
3.3
â
5.0
â
17.0
â
20.4
â
pF
f = 10 MHz
Rev.4.00 Jun. 04, 2004 page 9 of 15
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