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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.

Ethernet and USB Clock Generator for Freescale B4/ T4-based Systems

Package Information

CAD Model:View CAD Model
Pkg. Type:VFQFPN
Pkg. Code:NLG48
Lead Count (#):48
Pkg. Dimensions (mm):7.0 x 7.0 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 (#)48
Carrier TypeTray
Moisture Sensitivity Level (MSL)3
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)-40 to 85°C
Accepts Spread Spec InputNo
App Jitter CompliancePCIe Gen1, PCIe Gen2
C-C Jitter Typ P-P (ps)75
Chipset ManufacturerFreescale
Chipset NameT4040
Core Voltage (V)2.5V, 3.3V
Input Freq (MHz)10 - 150
Input TypeCrystal, LVPECL
Inputs (#)2
Length (mm)7
MOQ260
Output Freq Range (MHz)25 - 25, 24 - 24, 125 - 125
Output TypeLVCMOS
Output Voltage (V)1.8V, 2.5V, 3.3V
Outputs (#)10
Package Area (mm²)49
Period Jitter Max P-P (ps)150
Phase Jitter Typ RMS (ps)0.75
Pitch (mm)0.5
Pkg. Dimensions (mm)7.0 x 7.0 x 0.9
Pkg. TypeVFQFPN
Product CategoryFemtoClock, Low Jitter Clocks (<700 fs RMS)
Qty. per Carrier (#)260
Qty. per Reel (#)0
Reference OutputNo
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumNo
Tape & ReelNo
Thickness (mm)0.9
Width (mm)7
Xtal Freq (MHz)25 - 25

Description

The 840NT4-01I is clock generator designed to provide ethernet and USB clocks for Freescale B4/ T4-based systems. The 840NT4-01I utilizes Renesas' FemtoClock NG® PLL technology to synthesize eight low phase-jitter Ethernet reference clocks. The clock generator also provides a 24MHz USB reference clock and a 25MHz reference output.