HD74AC273 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HD74AC273 Datasheet PDF : 10 Pages
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HD74AC273
AC Characteristics: HD74AC273
Item
Maximum clock
frequency
Symbol
f max
VCC (V)*1
3.3
5.0
Ta = +25°C
CL = 50 pF
Min Typ
90
125
140 175
Propagation delay
t PLH
3.3
Clock to output
5.0
1.0
7.0
1.0
5.5
Propagation delay
t PHL
3.3
Clock to output
5.0
1.0
7.0
1.0
5.0
Propagation delay
t PHL
3.3
MR to output
5.0
1.0
7.0
1.0
5.0
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
—
—
12.5
9.0
13.0
10.0
13.0
10.0
Ta = –40°C to +85°C
CL = 50 pF
Min
Max
75
—
125
—
1.0
14.0
1.0
10.0
1.0
14.5
1.0
11.0
1.0
14.0
1.0
10.5
Unit
MHz
ns
ns
ns
AC Operating Requirements: HD74AC273
Item
Setup time, HIGH or LOW
Data to CP
Symbol
t su
Ta = +25°C
CL = 50 pF
VCC (V)*1 Typ
3.3
3.5
5.0
2.5
Hold time, HIGH or LOW
th
Data to CP
3.3
–2.0
5.0
–1.0
Clock pulse width
HIGH or LOW
tw
3.3
3.5
5.0
2.5
MR Pulse width
HIGH or LOW
tw
3.3
2.0
5.0
1.5
Recovery time
MR to CP
t rec
3.3
1.5
5.0
1.0
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Ta = –40°C
to +85°C
CL = 50 pF
Guaranteed Minimum
5.5
6.0
4.0
4.5
0.0
0.0
1.0
1.0
5.5
6.0
4.0
4.5
5.5
6.0
4.0
4.5
3.5
4.5
2.0
3.0
Unit
ns
ns
ns
ns
ns
4
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