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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to [email protected]. Full transition to SiTime is expected by late 2026.

AMD Geode™ GX2 Clock Source

Package Information

CAD Model:View CAD Model
Pkg. Type:SSOP
Pkg. Code:PYG28
Lead Count (#):28
Pkg. Dimensions (mm):10.2 x 5.3 x 1.73
Pitch (mm):0.65

Environmental & Export Classifications

Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090
Moisture Sensitivity Level (MSL)1

Product Attributes

Pkg. TypeSSOP
Lead Count (#)28
Pb (Lead) FreeYes
Carrier TypeReel
C-C Jitter Max P-P (ps)300
Chipset ManufacturerAMD
Clock Spec.Geode
Core Voltage (V)3.3
FunctionClock Generator
Input Freq (MHz)14.3182 - 14.3182
Input TypeCrystal
Length (mm)10.2
MOQ1500
Moisture Sensitivity Level (MSL)1
Output Freq Range (MHz)14.318 - 66
Output Skew (ps)250
Output Voltage (V)3.3
Outputs (#)12
Package Area (mm²)54.1
Pb Free Categorye3 Sn
Pitch (mm)0.65
Pkg. Dimensions (mm)10.2 x 5.3 x 1.73
Qty. per Carrier (#)0
Qty. per Reel (#)1500
Reel Size (in)13
Reference OutputYes
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumNo
Supply Voltage (V)3.3 - 3.3
Tape & ReelYes
Temp. Range (°C)-40 to 85°C
Thickness (mm)1.73
Width (mm)5.3
Xtal Freq (MHz)14.318 - 14.318
Xtal Inputs (#)1

Description

The MK1491-09 is a low cost, low jitter, high performance clock synthesizer for AMD's Geode™ GX2 processor for information appliance applications. Using patented analog Phase-Locked Loop (PLL) techniques, the device accepts a 14.318 MHz crystal input to produce multiple output clocks. It provides selectable PCI local bus clocks, 48 MHz clocks for Super I/O and USB, as well as multiple Reference outputs. The device has a power down mode to reduce power consumption.