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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™ Multi-Rate 3.3V LVPECLFrequency Synthesizer

Package Information

CAD Model:View CAD Model
Pkg. Type:TQFP
Pkg. Code:PRG48
Lead Count (#):48
Pkg. Dimensions (mm):7.0 x 7.0 x 1.4
Pitch (mm):0.5

Environmental & Export Classifications

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

Product Attributes

Lead Count (#)48
Carrier TypeTray
Moisture Sensitivity Level (MSL)3
Qty. per Reel (#)0
Qty. per Carrier (#)250
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)0 to 70°C
Advanced FeaturesSpread Spectrum
C-C Jitter Max P-P (ps)35
Core Voltage (V)3.3
Divider Value2, 4, 5
Feedback Divider27 - 33
Feedback InputNo
Input Freq (MHz)40
Input TypeCrystal, LVCMOS, LVPECL, LVDS, HSTL, HCSL, SSTL
Inputs (#)4
Length (mm)7
MOQ250
Output Banks (#)4
Output Freq Range (MHz)120 - 375
Output SignalingLVPECL
Output Skew (ps)120
Output TypeLVPECL
Output Voltage (V)3.3
Outputs (#)4
Package Area (mm²)49
Phase Jitter Typ RMS (ps)1.33
Pitch (mm)0.5
Pkg. Dimensions (mm)7.0 x 7.0 x 1.4
Pkg. TypeTQFP
Product CategoryFemtoClock, Low Jitter Clocks (<700 fs RMS)
Prog. ClockNo
Reference OutputYes
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumYes
Tape & ReelNo
Thickness (mm)1.4
VCO Max Freq (MHz)640
VCO Min Freq (MHz)490
Width (mm)7
Xtal Freq (KHz)40
Xtal Inputs (#)2

Description

The 843034-06 is a general purpose, low phase noise LVPECL synthesizer which can generate frequencies for a wide variety of applications. The 843034-06 has a 4:1 input multiplexer from which the following inputs can be selected: one differential input, one single-ended input, or one of two crystal oscillators, thus making the device ideal for frequency translation or frequency generation. The 843034- 06 has dual LVPECL outputs that may be programmed for ÷2, ÷4 or ÷5 of the VCO frequency. The 843034-06 also supplies a buffered copy of the reference clock or crystal frequency on the single-ended REF_OUT pin which can be enabled or disabled (disabled by default). The output frequency can be programmed using either a serial or parallel programming interface. This device supports Spread Spectrum Clocking (SSC) for EMI reduction.