Si5315
8
Rev. 1.0
Table 3. AC Characteristics
(VDD = 1.8 ±5%, 2.5 ±10%, or 3.3 V ±10%, TA = –40 to 85 C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
Input Frequency
CKNF
0.008
—
644.53
MHz
CKINn Input Pins
Input Duty Cycle (Minimum
Pulse Width)
CKNDC
Whichever is smaller1
40
—
60
%
2—
—
ns
Input Capacitance
CKNCIN
——
3
pF
Input Rise/Fall Time
CKNTRF
20–80%
——
11
ns
CKOUTn Output Pins
Output Frequency (Output not
configured for CMOS or disable)
CKOF
Note 2
0.008
—
644.53
MHz
Note 3
0.008
—
125
MHz
Maximum Output Frequency in
CMOS Format
CKOFMC
—
161.13
MHz
Output Rise/Fall (20–80%) at
644.5313 MHz
CKOTRF Output not configured for CMOS
—
230
350
ps
Single Ended Output Rise/Fall
(20–80%)
CKOTRF
CMOS Output
VDD = 1.62
Cload = 5 pF
——
8
ns
CMOS Output
VDD = 2.97
Cload = 5 pF
——
2
ns
Output Duty Cycle Differential
Uncertainty
CKODC
100
Load
Line to Line
Measured at 50% Point
(not for CMOS)
——
±40
ps
LVCMOS Pins
Input Capacitance
Cin
——
3
pF
Notes:
1. Assumes N3 does not equal 1. IF N3 = 1, CKNDC = 50 s.
2. Refers to Si5315A speed grade.
3. Refers to Si5315B speed grade.