AC Electrical Characteristics for AC
Symbol
fMAX
Parameter
Maximum Clock
Frequency
VCC (V)(6)
3.3
5.0
TA = +25°C
Min. Typ. Max.
90 125
140 175
tPLH Propagation Delay,
CP to Qn
tPHL Propagation Delay,
CP to Qn
3.3
3.0 8.0 13.0
5.0
2.0 6.0 9.0
3.3
3.5 8.5 13.0
5.0
2.5 6.5 10.0
Note:
6. Voltage range 3.3 is 3.3V ± 0.3V. Voltage range 5.0 is 5.0V ± 0.5V
TA = –40°C to +85°C
Min.
Max.
75
125
1.5
14.0
1.5
10.0
2.0
14.5
1.5
11.0
Units
MHz
ns
ns
AC Operating Requirements for AC
Symbol
tS
tH
tS
tH
tW
Parameter
Setup Time, HIGH or LOW,
Dn to CP
VCC (V)(7)
3.3
5.0
Hold Time, HIGH or LOW,
3.3
Dn to CP
5.0
Setup Time, HIGH or LOW,
3.3
CE to CP
5.0
Hold Time, HIGH or LOW,
3.3
CE to CP
5.0
CP Pulse Width,
3.3
HIGH or LOW
5.0
TA = +25°C,
CL = 50pF
TA = –40°C to +85°C,
CL = 50pF
Typ.
Guaranteed Minimum
3.5
5.5
6.0
2.5
4.0
4.5
–2.0
0
0
–1.0
1.0
1.0
4.0
6.0
7.5
2.5
4.0
4.5
–3.5
0
0
–2.0
1.0
1.0
3.5
5.5
6.0
2.5
4.0
4.5
Note:
7. Voltage range 3.3 is 3.0V ± 0.3V. Voltage range 5.0 is 5.0V ± 0.5V
Units
ns
ns
ns
ns
ns
©1988 Fairchild Semiconductor Corporation
74AC377, 74ACT377 Rev. 1.6.1
7
www.fairchildsemi.com