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843N252-45 Datasheet

Part Number 843N252-45
Manufacturers IDT
Logo IDT
Description NG Crystal-to-3.3V LVPECL Frequency Synthesizer
Datasheet 843N252-45 Datasheet843N252-45 Datasheet (PDF)

FemtoClock® NG Crystal-to-3.3V LVPECL Frequency Synthesizer 843N252-45 Data Sheet General Description The 843N252-45 is a 1 LVPECL and 1 LVCMOS output Synthesizer optimized to generate Ethernet reference clock frequencies. The device uses IDT’s fourth generation FemtoClock ® NG technology for an optimum of high clock frequency and low phase noise performance, combined with a low power consumption and high power supply noise rejection. Using a 25MHz parallel resonant crystal, the following freq.

  843N252-45   843N252-45






Part Number 843N252-45
Manufacturers Renesas
Logo Renesas
Description LVPECL Frequency Synthesizer
Datasheet 843N252-45 Datasheet843N252-45 Datasheet (PDF)

FemtoClock® NG Crystal-to-3.3V LVPECL Frequency Synthesizer 843N252-45 Data Sheet General Description The 843N252-45 is a 1 LVPECL and 1 LVCMOS output Synthesizer optimized to generate Ethernet reference clock frequencies. The device uses IDT’s fourth generation FemtoClock ® NG technology for an optimum of high clock frequency and low phase noise performance, combined with a low power consumption and high power supply noise rejection. Using a 25MHz parallel resonant crystal, the following freq.

  843N252-45   843N252-45







NG Crystal-to-3.3V LVPECL Frequency Synthesizer

FemtoClock® NG Crystal-to-3.3V LVPECL Frequency Synthesizer 843N252-45 Data Sheet General Description The 843N252-45 is a 1 LVPECL and 1 LVCMOS output Synthesizer optimized to generate Ethernet reference clock frequencies. The device uses IDT’s fourth generation FemtoClock ® NG technology for an optimum of high clock frequency and low phase noise performance, combined with a low power consumption and high power supply noise rejection. Using a 25MHz parallel resonant crystal, the following frequencies can be generated: 156.25MHz and 125MHz. With a very low phase noise VCO it is targeted to achieve 0.4ps or lower typical rms phase jitter, easily meeting Ethernet jitter requirements. The 843N252-45 is packaged in a small 16-pin TSSOP package. Features • Fourth generation FemtoClock® Next Generation (NG) technology • One differential 3.3V LVPECL output and one LVCMOS/LVTTL output • Crystal oscillator interface designed for a 25MHz parallel resonant crystal • A 25MHz crystal.


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