HD74LV244A 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HD74LV244A Datasheet PDF : 15 Pages
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HD74LV244A
Switching Characteristics
• VCC = 2.5 ± 0.2 V
Ta = 25°C
Ta = –40 to 85°C
Item
Propagation
delay time
Enable time
Disable
time
Symbol Min Typ
tPLH
— 7.5
tPHL
— 9.5
tZH
— 8.9
tZL
Max Min
12.5 1.0
15.3 1.0
14.6 1.0
— 10.8 17.8 1.0
tHZ
— 9.1 14.1 1.0
tLZ
— 13.4 19.2 1.0
Max
15.0
18.0
17.0
Unit Test Conditions
ns CL = 15 pF
CL = 50 pF
ns CL = 15 pF
21.0
16.0
CL = 50 pF
ns CL = 15 pF
21.0
CL = 50 pF
FROM
(Input)
A
OE
OE
TO
(Output)
Y
Y
Y
• VCC = 3.3 ± 0.3 V
Ta = 25°C
Ta = –40 to 85°C
Item
Propagation
delay time
Enable time
Disable
time
Symbol Min Typ
tPLH
— 5.4
tPHL
— 6.8
tZH
— 6.3
tZL
Max Min
8.4 1.0
11.9 1.0
10.6 1.0
— 7.8 14.1 1.0
tHZ
— 7.6 11.7 1.0
tLZ
— 11.0 16.0 1.0
Max Unit Test Conditions
10.0
ns
CL = 15 pF
13.5
CL = 50 pF
12.5
ns
CL = 15 pF
16.0
CL = 50 pF
13.0
ns
CL = 15 pF
18.0
CL = 50 pF
FROM
(Input)
A
TO
(Output)
Y
OE
Y
OE
Y
7
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