Clocks & Timing

The Renesas Wide Area Network (WAN) PLLs are designed for synchronization of PDH, SONET/SDH and TDM equipment and interfaces. These devices comply with ITU-T recommendations for SDH Equipment Clocks (SECs); as well as Telcordia and ATIS/ANSI requirements for stratum 4, stratum 4E, stratum 3, and SONET minimum clock. Renesas WAN PLLs provide functions such as selectable loop filters, holdover, hitless reference switching, phase slope limiting, and clock redundancy.

Download the Timing Fabric for Communications Equipment Overview (PDF)

Product Selection Table

    Processing table
    Application
    Clock Support
    Channels (#)
    Advanced Features
    Inputs (#)
    Diff. Inputs
    Input Freq Range Type
    Output Freq Range Type
    Phase Jitter Typ RMS (ps)
    Outputs (#)
    Diff. Outputs
    Part Number
    8T49N240
    FemtoClock™ NG Universal Frequency Translator    		 Jitter Attenuator, Port Synchronizer 1
    External Feedback, Fractional-N PLL, OTP and more...
    		 2 2 DS1, E1, Ethernet, OTN, SONET/SDH, TDM
    10GBASE-R, 100BASE-T, 1000BASE-T/X, DS1, DS2, DS3, E1, E3 and more...
    		 0.2 4 4
    8T49N241
    FemtoClock™ NG Universal Frequency Translator    		 Jitter Attenuator, Port Synchronizer 1
    External Feedback, Fractional-N PLL, OTP and more...
    		 2 2 DS1, E1, Ethernet, OTN, SONET/SDH, TDM
    10GBASE-R, 100BASE-T, 1000BASE-T/X, DS1, DS2, DS3, E1, E3 and more...
    		 0.35 4 4
    8T49N242
    FemtoClock™ NG Universal Frequency Translator    		 Jitter Attenuator, Port Synchronizer 1
    External Feedback, Fractional-N PLL, OTP and more...
    		 2 2 DS1, E1, Ethernet, OTN, SONET/SDH, TDM
    10GBASE-R, 100BASE-T, 1000BASE-T/X, DS1, DS2, DS3, E1, E3 and more...
    		 0.276 4 4
    8T49N285
    FemtoClock NG Universal Frequency Translator (2-in/1-PLL/8-out)    		 Jitter Attenuator, Port Synchronizer 2
    External Feedback, Fractional-N PLL and more...
    		 2 4 DS1, E1, Ethernet, OTN, SONET/SDH, TDM
    10GBASE-R, 100BASE-T, 1000BASE-T/X, DS1, DS2, DS3, E1, E3 and more...
    		 0.28 8 8
    8T49N286
    FemtoClock NG Universal Frequency Translator (4-in/2-PLL/8-out)    		 Jitter Attenuator, Port Synchronizer 2
    External Feedback, Fractional-N PLL and more...
    		 4 4 DS1, E1, Ethernet, OTN, SONET/SDH, TDM
    10GBASE-R, 100BASE-T, 1000BASE-T/X, DS1, DS2, DS3, E1, E3 and more...
    		 0.28 8 8
    8T49N287
    FemtoClock NG Universal Frequency Translator (2-in/2-PLL/8-out)    		 Jitter Attenuator, Port Synchronizer 2
    External Feedback, Fractional-N PLL and more...
    		 2 2 DS1, E1, Ethernet, OTN, SONET/SDH, TDM
    10GBASE-R, 100BASE-T, 1000BASE-T/X, DS1, DS2, DS3, E1, E3 and more...
    		 0.28 8 8
    8V41NS0412
    FemtoClock™ NG 12-Output Clock Generator    		 Clock Generator 1 12-Output Clock Generator with Four Dividers, Programmable Clock 2 2 0.095 12 11
    8V49NS0312
    FemtoClock™ NG 12-Output Clock Generator    		 Clock Generator 1 12-Output Clock Generator with Four Dividers, Programmable Clock 2 2 0.089 12 11
    8V49NS0412
    FemtoClock™ NG 12-Output Clock Generator    		 Clock Generator 1 12-Output Clock Generator with Four Dividers, Programmable Clock 2 2 0.08 12 11
    RC22504A
    FemtoClock™ 2 Clock Generator    		 Clock Generator 1 4-Output Clock Generator 2 1 0.079 4 4
    RC22514A
    FemtoClock™ 2 Clock Generator    		 Clock Generator 1 4-Output Clock Generator 0 0 0.079 4 4
    RC32504A
    FemtoClock™ 2 Jitter Attenuator or Clock Generator    		 Clock Generator, Jitter Attenuator 1 4-Output Jitter Attenuator or Clock Generator 3 1 0.079 4 4
    RC32508A
    FemtoClock 2 Jitter Attenuator or Clock Generator    		 8-Output Jitter Attenuator and Clock Generator 3 0.067 8 8
    RC32514A
    FemtoClock™ 2 Jitter Attenuator or Clock Generator    		 Clock Generator, Jitter Attenuator 1 4-Output Jitter Attenuator or Clock Generator 3 1 0.079 4 4
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