AC Waveforms(1)
Note:
1. Timing measurement reference is 1.5V. Input AC driving levels are 0.0V and 3.0V, unless otherwise specified.
AC Characteristics(1)
-7
-10
-15
-25
Symbol
Parameter
Min
Max
7.5
7
Min
Max
Min
Max
Min
Max
Units
ns
8 outputs switching
1 output switching
3
3
10
3
15
3
25
Input or Feedback to
Non-Registered Output
tPD
ns
tCF
tCO
Clock to Feedback
Clock to Output
3
6
7
8
10
12
ns
2
5
5
2
2
10
2
ns
Input or Feedback
Setup Time
tS
7.5
12
15
ns
tH
tP
Hold Time
0
8
4
0
12
6
0
16
8
0
ns
ns
Clock Period
24
12
tW
Clock Width
ns
External Feedback 1/(tS + tCO
)
100
125
125
9
68
74
83
10
10
10
10
45
50
62
15
15
15
15
37
40
41
20
20
20
20
MHz
MHz
MHz
ns
fMAX
Internal Feedback 1/(tS + tCF
)
No Feedback 1/(tP)
tEA
Input to Output Enable — Product Term
Input to Output Disable —Product Term
OE pin to Output Enable
3
2
3
2
3
2
3
2
tER
9
ns
tPZX
tPXZ
2
6
2
2
2
ns
OE pin to Output Disable
1.5
6
1.5
1.5
1.5
ns
Note:
1. See ordering information for valid part numbers and speed grades.
2. Shaded -25 parts are obsolete with a last-time buy date of August 19, 1999.
3. Shaded -7 and -15 parts are obsolete with a last-time buy date of September 30, 2006.
ATF20V8B(Q)(L)
4