Atf2500cql – Rainbow Electronics ATF2500CQL User Manual
Page 26
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ATF2500CQL
0777G–12/01
ATF2500CQL Register AC Characteristics, Input Pin Clock
Symbol
Parameter
-25
Units
Min
Max
t
COS
Clock to Output
12
ns
t
CFS
Clock to Feedback
0
7
ns
t
SIS
Input Setup Time
20
ns
t
SFS
Feedback Setup Time
20
ns
t
HS
Hold Time
0
ns
t
WS
Clock Width
8
ns
t
PS
Clock Period
146
ns
F
MAXS
External Feedback 1/(t
SIS
+ t
COS
)
31
MHz
Internal Feedback 1/(t
SFS
+ t
CFS
)
37
MHz
No Feedback 1/(t
PS
)
62
MHz
t
ARS
Asynchronous Reset/Preset Recovery Time
20
ns
ATF2500CQL Register AC Characteristics, Product Term Clock
Symbol
Parameter
-25
Units
Min
Max
t
COA
Clock to Output
22
ns
t
CFA
Clock to Feedback
12
18
ns
t
SIA
Input Setup Time
15
ns
t
SFA
Feedback Setup Time
10
ns
t
HA
Hold Time
12
ns
t
WA
Clock Width
14
ns
t
PA
Clock Period
28
ns
F
MAXA
External Feedback 1/(t
SIA
+ t
COA
)
27
MHz
Internal Feedback 1/(t
SFA
+ t
CFA
)
36
MHz
No Feedback 1/(t
PS
)
36
MHz
t
ARA
Asynchronous Reset/Preset Recovery Time
15
ns