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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.

Crystal-to-LVPECL 133MHz Clock Synthesizer

Package Information

CAD Model:View CAD Model
Pkg. Type:VFQFPN
Pkg. Code:NLG32
Lead Count (#):32
Pkg. Dimensions (mm):5.0 x 5.0 x 0.9
Pitch (mm):0.5

Environmental & Export Classifications

Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090
Moisture Sensitivity Level (MSL)3

Product Attributes

Pkg. TypeVFQFPN
Lead Count (#)32
Pb (Lead) FreeYes
Carrier TypeReel
Advanced FeaturesProgrammable Clock, Spread Spectrum
App Jitter CompliancePCIe Gen1, PCIe Gen2
Core Voltage (V)3.3
Feedback InputNo
Input Freq (MHz)25 - 25
Input TypeCrystal, CML, LVPECL, SSTL
Inputs (#)2
Length (mm)5
MOQ2500
Moisture Sensitivity Level (MSL)3
Output Banks (#)1
Output Freq Range (MHz)133.33 - 133.33
Output TypeLVPECL
Output Voltage (V)3.3
Outputs (#)4
Package Area (mm²)25
Pb Free Categorye3 Sn
Phase Jitter Typ RMS (ps)1.2
Pitch (mm)0.5
Pkg. Dimensions (mm)5.0 x 5.0 x 0.9
Prog. ClockYes
Prog. InterfaceI2C
Qty. per Carrier (#)0
Qty. per Reel (#)2500
Reel Size (in)13
Reference OutputNo
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumYes
Tape & ReelYes
Temp. Range (°C)-40 to 85°C
Thickness (mm)0.9
Width (mm)5

Description

The 843S104I-133 is a PLL-based clock synthesizer specifically designed for low phase noise applications. This device generates a 133.33MHz differential LVPECL clock from an input reference of 25MHz. The input reference may be derived from an external source or by the addition of a 25MHz crystal to the on-chip crystal oscillator. An external reference is applied to the PCLK, nPCLK pins.The device offers spread spectrum clock output for reduced EMI applications. An I2C bus interface is used to enable or disable spread spectrum operation as well as to select either a down spread value of -0.35% or -0.5%.The 843S104I-133 is available in a lead-free 32-Lead VFQFN package.