MC74AC273 Datasheet, PDF (4/7 Pages) ON Semiconductor – OCTAL D FLIP-FLOP

MC74AC273 MC74ACT273
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
74AC
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
Frequency
3.3 90 125
75
5.0 140 175
125
Mhz
3-3
tPLH
Propagation Delay
Clock to Output
3.3 4.0 7.0 12.5 3.0 14.0
ns
3-6
5.0 3.0 5.5 9.0 2.5 10.0
tPHL
Propagation Delay
Clock to Output
3.3 4.0 7.0 13.0 3.5 14.5
ns
3-6
5.0 3.0 5.0 10.0 2.5 11.0
tPHL
Propagation Delay
MR to Output
3.3 4.0 7.0 13.0 3.5 14.0
ns
3-6
5.0 3.0 5.0 10.0 2.5 10.5
* 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
ts
Setup Time, HIGH or LOW
Data to CP
th
Hold Time, HIGH or LOW
Data to CP
tw
Clock Pulse Width
HIGH or LOW
tw
MR Pulse Width
HIGH or LOW
trec
Recovery Time
MR to CP
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
74AC
74AC
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Typ
Guaranteed Minimum
3.3 3.5
5.5
5.0 2.5
4.0
6.0
ns
3-9
4.5
3.3 –2.0
0
5.0 –1.0
1.0
3.3 3.5
5.5
5.0 2.5
4.0
0
ns
3-9
1.0
6.0
ns
3-6
4.5
3.3 2.0
5.5
5.0 1.5
4.0
3.3 1.5
3.5
5.0 1.0
2.0
6.0
ns
3-6
4.5
4.5
ns
3-9
3.0
FACT DATA
5-4