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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.

FemtoClock™ Crystal-to-LVPECL/LVDS/LVCMOS Clock Generator

Package Information

Pkg. Type:TQFP
Pkg. Code:PRG32
Lead Count (#):32
Pkg. Dimensions (mm):7.0 x 7.0 x 1.4
Pitch (mm):0.8

Environmental & Export Classifications

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

Product Attributes

Pkg. TypeTQFP
Lead Count (#)32
Pb (Lead) FreeYes
Carrier TypeTray
Advanced FeaturesProgrammable Clock
C-C Jitter Max P-P (ps)50
Core Voltage (V)3.3
Divider Value2, 5, 5.2631, 6, 7, 8, 10.5, 14
Feedback Divider28 - 28
Feedback InputNo
Input Freq (MHz)25 - 25
Input TypeCrystal
Inputs (#)1
Length (mm)7
MOQ250
Moisture Sensitivity Level (MSL)3
Output Banks (#)5
Output Freq Range (MHz)25 - 25, 87.5 - 87.5, 50 - 50, 125 - 125, 100 - 100, 66.67 - 66.67, 133 - 133, 350 - 350
Output SignalingLVPECL
Output TypeLVPECL
Output Voltage (V)3.3
Outputs (#)6
Package Area (mm²)49
Pb Free Categorye3 Sn
Period Jitter Max P-P (ps)80
Pitch (mm)0.8
Pkg. Dimensions (mm)7.0 x 7.0 x 1.4
Prog. ClockYes
Prog. InterfaceParallel
Qty. per Carrier (#)250
Qty. per Reel (#)0
Reference OutputYes
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumNo
Tape & ReelNo
Temp. Range (°C)0 to 70°C
Thickness (mm)1.4
Width (mm)7
Xtal Freq (KHz)25 - 25
Xtal Inputs (#)1

Description

The 843S2807 provides five banks of outputs and a reference clock. The banks can be enabled by using a common output enable pin. A 25MHz crystal is used to generate the 50MHz, 66.67MHz, 87.5MHz, 100MHz, 125MHz, 133MHz and 350MHz frequencies.