Si5330
10 Rev. 1.0
5. Pin Descriptions
Note: Center pad must be tied to GND for normal operation.
Table 10. Si5330 Pin Descriptions
Pin # Pin Name I/O Signal Type Description
1IN1 IMulti
Si5330A/B/C/G/H/J Differential Input Devices.
These pins are used as the differential clock input. IN1 is
the positive input; IN2 is the negative input. Refer to
“AN408: Termination Options for Any-Frequency, Any-
Output Clock Generators and Clock Buffers—Si5338,
Si5334, Si5330” for interfacing and termination details.
Si5330F/K/L/M Single-Ended Input Devices.
These pins are not used. Leave IN1 unconnected and
IN2 connected to ground.
2
IN2 I Multi
3IN3 IMulti
Si5330F/K/L/M Single-Ended Devices.
This is the single-ended clock input. Refer to AN408 for
interfacing and termination details.
Si5330A/B/C/G/H/J Differential Input Devices.
This pin is not used. Connect to ground.
4RSVD_GND
Ground.
Must be connected to system ground.
5RSVD_GND
Ground.
Must be connected to system ground.
6RSVD_GND
Ground.
Must be connected to system ground.
IN3
IN2
RSVD_GND
IN1
CLK2B
CLK2A
VDDO2
VDDO1
CLK1B
CLK1A
VDD
RSVD_GND
VDD
RSVD_GND
CLK3A
CLK3B
LOS
OEB
VDDO0
CLK0B
CLK0A
VDDO3
GND
GND
RSVD_GND
RSVD_GND
24
23 22 21 20 19
7
8 9 10 11 12
54
321
6
14 15
16 17 18
13
Si5330
Rev. 1.0 11
7 VDD VDD 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.
8 LOS O Open Drain
Loss of Signal Indicator.
0 = CLKIN present.
1 = Loss of signal (LOS).
This pin requires an external
1kpull-up resistor.
9 CLK3B O Multi
Si5330A/B/C/K/L/M Differential Output Devices.
This is the negative side of the differential CLK3 output.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not in use.
Si5330F/G/H/J Single-Ended Output Devices.
This is one of the single-ended CLK3 outputs. Both
CLK3A and CLK3B single-ended outputs are in phase.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not is use.
10 CLK3A O Multi
Si5330A/B/C/K/L/M Differential Devices.
This is the positive side of the differential CLK3 output.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not in use.
Si5330F/G/H/J Single-Ended Devices.
This is one of the single-ended CLK3 outputs. Both
CLK3A and CLK3B single-ended outputs are in phase.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not is use.
11 VDDO3 VDD Supply
Output Clock Supply Voltage.
Supply voltage for CLK3A/B. Use a 0.1 µF bypass cap
as close as possible to this pin. If CLK3 is not used, this
pin must be tied to V
DD
(pin 7 and/or pin 24).
12 RSVD_GND
Ground.
Must be connected to system ground.
13 CLK2B O Multi
Si5330A/B/C/K/L/M Differential Output Devices.
This is the negative side of the differential CLK2 output.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not in use.
Si5330F/G/H/J Single-Ended Output Devices.
This is one of the single-ended CLK2 outputs. Both
CLK2A and CLK2B single-ended outputs are in phase.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not is use.
Table 10. Si5330 Pin Descriptions (Continued)
Pin # Pin Name I/O Signal Type Description
Si5330
12 Rev. 1.0
14 CLK2A O Multi
Si5330A/B/C/K/L/M Differential Devices.
This is the positive side of the differential CLK2 output.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not in use.
Si5330F/G/H/J Single-Ended Devices.
This is one of the single-ended CLK2 outputs. Both
CLK2A and CLK2B single-ended outputs are in phase.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not is use.
15 VDDO2 VDD Supply
Output Clock Supply Voltage.
Supply voltage for CLK2A/B. Use a 0.1 µF bypass cap
as close as possible to this pin. If CLK2 is not used, this
pin must be tied to V
DD
(pin 7 and/or pin 24).
16 VDDO1 VDD Supply
Output Clock Supply Voltage.
Supply voltage for CLK1A,B. Use a 0.1 µF bypass cap
as close as possible to this pin. If CLK1 is not used, this
pin must be tied to V
DD
(pin 7 and/or pin 24).
17 CLK1B O Multi
Si5330A/B/C/K/L/M Differential Output Devices.
This is the negative side of the differential CLK1 output.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not in use.
Si5330F/G/H/J Single-Ended Output Devices.
This is one of the single-ended CLK1 outputs. Both
CLK1A and CLK1B single-ended outputs are in phase.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not is use.
18 CLK1A O Multi
Si5330A/B/C/K/L/M Differential Devices.
This is the positive side of the differential CLK1 output.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not in use.
Si5330F/G/H/J Single-Ended Devices.
This is one of the single-ended CLK1 outputs. Both
CLK1A and CLK1B single-ended outputs are in phase.
Refer to AN408 for interfacing and termination details.
Leave unconnected when not is use.
19 OEB I CMOS
Output Enable.
All outputs are enabled when the OEB pin is connected
to ground or below the V
IL
voltage for this pin. Connect-
ing the OEB pin to V
DD
or above the V
IH
level will dis-
able the outputs. Both V
IL
and V
IH
are specified in
Table 5. All outputs are forced to a logic “low” when dis-
abled. This pin is 3.3 V tolerant.
20 VDDO0 VDD Supply
Output Clock Supply Voltage.
Supply voltage for CLK0A,B. Use a 0.1 µF bypass cap
as close as possible to this pin. If CLK2 is not used, this
pin must be tied to V
DD
(pin 7 and/or pin 24).
Table 10. Si5330 Pin Descriptions (Continued)
Pin # Pin Name I/O Signal Type Description

SI5330F-A00215-GM

Mfr. #:
Manufacturer:
Silicon Labs
Description:
Clock Buffer Single-ended input, 2.5V CMOS output, 1:8 clock buffer, 5 - 200 MHz
Lifecycle:
New from this manufacturer.
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