HD74ACT244 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HD74ACT244 Datasheet PDF : 9 Pages
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HD74AC244/HD74ACT244
AC Characteristics: HD74AC244
Item
Propagation delay
Data to output
Symbol
t PLH
VCC (V)*1
3.3
5.0
Ta = +25°C
CL = 50 pF
Min Typ
1.0
6.5
1.0
5.0
Propagation delay
t PHL
3.3
Data to output
5.0
1.0
6.5
1.0
5.0
Output enable time
t PZH
3.3
5.0
1.0
6.0
1.0
5.0
Output enable time
t PZL
3.3
5.0
1.0
7.5
1.0
5.5
Output disable time
t PHZ
3.3
5.0
1.0
7.0
1.0
6.5
Output disable time
t PLZ
3.3
5.0
1.0
7.5
1.0
6.5
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Max
9.0
7.0
9.0
7.0
10.5
7.0
10.0
8.0
10.0
9.0
10.5
9.0
Ta = –40°C to +85°C
CL = 50 pF
Min
Max
Unit
1.0
10.0
ns
1.0
7.5
1.0
10.0
ns
1.0
7.5
1.0
11.0
ns
1.0
8.0
1.0
11.0
ns
1.0
8.5
1.0
10.5
ns
1.0
9.5
1.0
11.5
ns
1.0
9.5
AC Characteristics: HD74ACT244
Item
Propagation delay
Data to output
Symbol VCC (V)*1
t PLH
5.0
Ta = +25°C
CL = 50 pF
Min Typ
1.0
6.5
Propagation delay
t PHL
5.0
Data to output
1.0
7.0
Output enable time
t PZH
5.0
1.0
6.0
Output enable time
t PZL
5.0
1.0
7.0
Output disable time
t PHZ
5.0
1.0
7.0
Output disable time
t PLZ
5.0
1.0
7.5
Note: 1. Voltage Range 5.0 is 5.0 V ± 0.5 V
Max
9.0
9.0
8.5
9.5
9.5
10.0
Ta = –40°C to +85°C
CL = 50 pF
Min
Max
Unit
1.0
10.0
ns
1.0
10.0
ns
1.0
9.5
ns
1.0
10.5
ns
1.0
10.5
ns
1.0
10.5
ns
3
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