Rainbow Electronics ATF2500CQL - Manual (Page 26)

26
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