SM802108 Datasheet, PDF (2/11 Pages) Micrel Semiconductor – ClockWorks™ 10GbE & GbE (156.25MHz, 125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer

Micrel, Inc.
Ordering Information
Part Number
Marking
SM802108UMG
802108
SM802108UMGR
802108
Note:
1. Devices are Green, RoHS, and PFOS compliant.
Shipping
Tube
Tape and Reel
Junction Temperature Range
–40°C to +85°C
–40°C to +85°C
Pin Configuration
SM802108
Package
24-Pin QFN
24-Pin QFN
24-Pin QFN
(Top View)
Pin Description
Pin Number
16, 17
20, 21
23, 24
3, 4
1
2
Pin Name
/Q0, Q0
/Q1, Q1
/Q2, Q2
/Q3, Q3
VDDO2
VSSO2
Pin Type
O, (DIF)
O, (DIF)
PWR
PWR
5
PLL_BYPASS
I, (SE)
6
XTAL_SEL
I, (SE)
Pin Level
LVPECL
LVPECL
LVCMOS
LVCMOS
Pin Function
Differential Clock Outputs from Bank 1
156.25MHz
Differential Clock Outputs from Bank 2
125MHz
Power Supply for Output Bank 2
Power Supply Ground for Output Bank 2
PLL Bypass, Selects Output Source
0 = Normal PLL Operation
1 = Output from Input Reference Clock or Crystal
45KΩ pull-down
Selects PLL Input Reference Source
0 = REF_IN, 1 = XTAL, 45KΩ pull-up
January 2011
2
M9999-012111-A
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