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December 14, 2001
79RC64574 79RC64575
AC Electrical Characteristics
(Tcase = 0°C to +85°C Commercial, Tcase = -40°C to +85°C Industrial, Vcc = 2.5V± 5%)
Clock Parameters—RC64574/575
Capacitive Load Deration—RC64574/575
Output Loading for AC Testing
Parameter
Symbol
Test
Conditions
RC64574/RC64575
200MHz
RC64574/RC64575
250MHz
Units
Min
Max
Min
Max
Pipeline Clock Frequency
PCLk
—
100
200
100
250
MHz
System Clock HIGH
tSCHIGH
Transition
≤ 3ns
3
—3
—ns
System Clock LOW
tSCLOW
Transition
≤ 3ns
3
—3
—ns
System Clock Frequency
—
33
100
33
125
MHz
System Clock Period
tSCP
—10
30
8
30
ns
System Clock Jitter
tJITTER
——
+ 250
—
+ 250
ps
System Clock Rise Time1
1. Rise and Fall times are measured between 10% and 90%
tSCRise
—
2—
2ns
tSCFall
—
2—
2ns
ModeClock Period
tModeCKP
—
256 tSCP
—
256 tSCP
ns
JTAG Clock Input Period
tTCK
—
100
—
100
ns
JTAG Clock HIGH
tTCKHIGH
——
40
—
40
ns
JTAG Clock Low
tTCKLOW
——
40
—
40
ns
JTAG Clock Rise Time
tTCKRise
—
5—
5ns
JTAG Clock Fall Time
tTCKFall
—
5—
5ns
Parameter
Symbol
Test
Conditions
200MHz
250MHz
Units
Min
Max
Min
Max
Load Derate
CLD
—
2
—
2
ns/25pF
Signal
Cld
All Signals
50 pF
–
+
To Device
Under Test
CLD
VREF
+1.5V