参数资料
型号: MC74ACT273DWR2
厂商: MOTOROLA INC
元件分类: 锁存器
英文描述: ACT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO20
封装: PLASTIC, SOIC-20
文件页数: 4/7页
文件大小: 187K
代理商: MC74ACT273DWR2
MC74AC273 MC74ACT273
5-4
FACT DATA
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
Symbol
Parameter
VCC*
(V)
74AC
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85
°C
CL = 50 pF
Unit
Fig.
No.
Min
Typ
Max
Min
Max
fmax
Maximum Clock
3.3
90
125
75
Mhz
3-3
fmax
Frequency
5.0
140
175
125
Mhz
3-3
tPLH
Propagation Delay
3.3
4.0
7.0
12.5
3.0
14.0
ns
3-6
tPLH
Clock to Output
5.0
3.0
5.5
9.0
2.5
10.0
ns
3-6
tPHL
Propagation Delay
3.3
4.0
7.0
13.0
3.5
14.5
ns
3-6
tPHL
Clock to Output
5.0
3.0
5.0
10.0
2.5
11.0
ns
3-6
tPHL
Propagation Delay
3.3
4.0
7.0
13.0
3.5
14.0
ns
3-6
tPHL
MR to Output
5.0
3.0
5.0
10.0
2.5
10.5
ns
3-6
* Voltage Range 3.3 V is 3.3 V
±0.3 V.
Voltage Range 5.0 V is 5.0 V
±0.5 V.
AC OPERATING REQUIREMENTS
Symbol
Parameter
VCC*
(V)
74AC
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85
°C
CL = 50 pF
Unit
Fig.
No.
Typ
Guaranteed Minimum
ts
Setup Time, HIGH or LOW
3.3
3.5
5.5
6.0
ns
3-9
ts
Data to CP
5.0
2.5
4.0
4.5
ns
3-9
th
Hold Time, HIGH or LOW
3.3
–2.0
0
ns
3-9
th
Data to CP
5.0
–1.0
1.0
ns
3-9
tw
Clock Pulse Width
3.3
3.5
5.5
6.0
ns
3-6
tw
HIGH or LOW
5.0
2.5
4.0
4.5
ns
3-6
tw
MR Pulse Width
3.3
2.0
5.5
6.0
ns
3-6
tw
HIGH or LOW
5.0
1.5
4.0
4.5
ns
3-6
trec
Recovery Time
3.3
1.5
3.5
4.5
ns
3-9
trec
MR to CP
5.0
1.0
2.0
3.0
ns
3-9
* Voltage Range 3.3 V is 3.3 V
±0.3 V.
Voltage Range 5.0 V is 5.0 V
±0.5 V.
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