Skip to main content
Renesas Electronics Corporation
FemtoClock NG™ Clock Synthesizer

Package Information

CAD Model:View CAD Model
Pkg. Type:VFQFPN
Pkg. Code:NLG40
Lead Count (#):40
Pkg. Dimensions (mm):6.0 x 6.0 x 0.9
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 (#)40
Carrier TypeTray
Moisture Sensitivity Level (MSL)3
Qty. per Reel (#)0
Qty. per Carrier (#)490
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)-40 to 85°C
Advanced FeaturesReference Output
Core Voltage (V)3.3
Feedback InputNo
Input Freq (MHz)25 - 25
Input TypeCrystal, LVCMOS
Inputs (#)2
Length (mm)6
MOQ490
Output Banks (#)5
Output Freq Range (MHz)25 - 25, 33.33 - 33.33, 100 - 100, 125 - 125, 156.25 - 156.25
Output Skew (ps)40
Output TypeLVCMOS, LVPECL
Output Voltage (V)3.3
Outputs (#)10
Package Area (mm²)36
Phase Jitter Typ RMS (ps)0.212
Pitch (mm)0.5
Pkg. Dimensions (mm)6.0 x 6.0 x 0.9
Pkg. TypeVFQFPN
Product CategoryFemtoClock, Ultra-Low Jitter Clocks (<300 fs RMS)
Prog. ClockNo
Reference OutputYes
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumNo
Tape & ReelNo
Thickness (mm)0.9
Width (mm)6

Description

The 843N571I is a PLL based clock synthesizer for use in Ethernet applications. The device uses Renesas' fourth generation FemtoClock™ NG technology for optimal high clock frequency and low phase noise performance, combined with a low power consumption and high power supply noise rejection. Using Renesas' latest FemtoClock NG PLL technology, the 843N571I achieves <0.3ps RMS phase jitter performance. 843N571I can synthesize 100MHz, 125MHz, 156.25MHz and a low frequency 33.33MHz CPU clock from a single device. Six LVCMOS outputs also serve as additional buffering of the 25MHz crystal reference.