SI5335 Datasheet, PDF (40/47 Pages) Silicon Laboratories – WEB-CUSTOMIZABLE, ANY-FREQUENCY, ANY-OUTPUT QUAD CLOCK GENERATOR/BUFFER

Si5335
Table 15. Si5335 Pin Descriptions (Continued)
Pin # Pin Name
17
CLK1B
18
CLK1A
19
P2
20
VDDO0
21
CLK0B
22
CLK0A
23 RSVD_GND
24
VDD
GND
PAD
GND
I/O
O
O
I
VDD
O
O
GND
VDD
GND
Signal Type
Description
Multi
Output Clock B for Channel 1.
May be a single-ended output or half of a differential output with
CLK1A being the other differential half. If unused, leave this pin
floating.
Multi
Output Clock A for Channel 1.
May be a single-ended output or half of a differential output with
CLK1B being the other differential half. If unused, leave this pin
floating.
Multi
Multi-Function Input. 3.3 V tolerant.
This pin functions as a multi-function input pin. The pin function
(OEB_all, OEB0, OEB1, OEB2, OEB3, SSENB, FS1, or RESET)
is user-selectable at time of configuration using the ClockBuilder
web configuration utility.
Supply
Output Clock Supply Voltage.
Supply voltage (3.3, 2.5, 1.8, or 1.5 V) for CLK0A,B.
A 0.1 µF capacitor must be located very close to this pin. If CLK0 is
not used, this pin must be tied to VDD (pin 7, 24).
Multi
Output Clock B for Channel 0.
May be a single-ended output or half of a differential output with
CLK0A being the other differential half. If unused, leave this pin
floating.
Multi
Output Clock A for Channel 0.
May be a single-ended output or half of a differential output with
CLK0B being the other differential half. If unused, leave this pin
floating.
GND
Ground.
Must be connected to system ground. Minimize the ground path
impedance for optimal performance of this device.
Supply
Core Supply Voltage.
The device operates from a 1.8, 2.5, or 3.3 V supply. A 0.1 µF
bypass capacitor should be located very close to this pin.
GND
Ground Pad.
This is the large pad in the center of the package. The device will
not function unless the ground pad is properly connected to a
ground plane on the PCB. See Table 17, “PCB Land Pattern,” on
page 43 for ground via requirements.
40
Rev. 1.4