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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™ 2 Clock Generator
This device is factory-configurable.
Try the Custom Part Configuration Utility.

Package Information

CAD Model:View CAD Model
Pkg. Type:VFQFPN
Pkg. Code:NBG24
Lead Count (#):24
Pkg. Dimensions (mm):4.0 x 4.0 x 0.8
Pitch (mm):0.5

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)1
Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090

Product Attributes

Lead Count (#)24
Carrier TypeReel
Moisture Sensitivity Level (MSL)1
Qty. per Reel (#)2500
Qty. per Carrier (#)0
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)-40 to 85°C
Country of AssemblyTAIWAN
Country of Wafer FabricationSINGAPORE
Advanced Features4-Output Clock Generator
ApplicationClock Generator
Channels (#)1
Core Voltage (V)1.8V, 3.3V
Diff. Inputs1
Diff. Outputs4
Family NameFemtoClock Clock Generator
Feedback Divider1 - 255
Feedback InputNo
Fractional Output Dividers (#)1
Input Freq (MHz)25 - 312.5
Input TypeCrystal, HCSL, LVDS, LVCMOS
Inputs (#)2
Length (mm)4
Longevity2040 Apr
MOQ2500
Output Banks (#)4
Output Freq Range (MHz)10 - 1000
Output SignalingLVPECL, LVDS
Output Skew (ps)50
Output TypeLVCMOS, HCSL, LVDS
Output Voltage (V)1.8V
Outputs (#)4
Package Area (mm²)81
Phase Jitter Max RMS (ps)0.1
Phase Jitter Typ RMS (fs)79
Phase Jitter Typ RMS (ps)0.079
Pitch (mm)0.5
Pkg. Dimensions (mm)4.0 x 4.0 x 0.8
Pkg. TypeVFQFPN
Product CategoryFemtoClock 2, Ultra-Low Jitter Clocks (<300 fs RMS), Extreme Performance Clocks (<150 fs RMS), Network Synchronization, PDH and SONET/SDH Clocks, Programmable Clocks
Prog. ClockYes
Prog. InterfaceI2C, SPI
Reel Size (in)13
Reference OutputNo
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumNo
Tape & ReelYes
Thickness (mm)0.8
VCO Max Freq (MHz)2500
VCO Min Freq (MHz)2400
Width (mm)4
Xtal Freq (KHz)25 - 80
Xtal Inputs (#)1

Description

The RC22504A is a small, low-power timing component designed to be placed immediately adjacent to a PHY, switch, ASIC or FPGA that requires several reference clocks with jitter performance less than 100fs (max). The RC22504A can act as a frequency synthesizer to locally generate the reference clock or as a DCO for frequency margining or OTN clock applications.