Si5338
8
Rev. 1.3
Table 6. Input and Output Clock Characteristics
(VDD = 1.8 V –5% to +10%, 2.5 V ±10%, or 3.3 V ±10%, TA = –40 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
Input Clock (AC Coupled Differential Input Clocks on Pins IN1/2, IN5/6)1 Frequency
fIN
5—
710
MHz
Differential Voltage
Swing
VPP
710 MHz input
0.4
—
2.4
VPP
tR/tF
20%–80%
—
1.0
ns
Duty Cycle
DC
< 1 ns tr/tf
40
—
60
%
Duty Cycle
DC
< 1 ns tr/tf
45
—
55
%
RIN
10
—
k
Input Capacitance
CIN
—3.5
—
pF
Input Clock (DC-Coupled Single-Ended Input Clock on Pins IN3/4)
Frequency
fIN
CMOS
5
—
200
MHz
Input Voltage
VI
–0.1
—
3.73
V
Input Voltage Swing
200 MHz
0.8
—
VDD+10%
Vpp
tR/tF
10%–90%
—
4
ns
tR/tF
20%–80%
—
2.3
ns
DC
< 4 ns tr/tf
40
—
60
%
Input Capacitance
CIN
—2.0
—
pF
Output Clocks (Differential)
fOUT
LVPECL, LVDS,
CML
0.16
—
350
MHz
367
—
473.33
MHz
550
—
710
MHz
HCSL
0.16
—
250
MHz
Notes:
1. Use an external 100
resistor to provide load termination for a differential clock. See
Figure 3.2. For best jitter performance, keep the midpoint differential input slew rate on pins 1,2,5,6 faster than 0.3 V/ns.
3. Minimum input frequency in clock buffer mode (PLL bypass) is 5 MHz. Operation to 1 MHz is also supported in buffer
mode, but loss-of-signal (LOS) status is not functional.
4. For best jitter performance, keep the mid point input single ended slew rate on pins 3 or 4 faster than 1 V/ns.
5. Not in PLL bypass mode.
6. Only two unique frequencies above 350 MHz can be simultaneously output, Fvco/4 and Fvco/6. See
"3.3. Synthesis 7. CML output format requires ac-coupling of the differential outputs to a differential 100
load at the receiver.
8. Includes effect of internal series 22
resistor.