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See Technical Specifications

843242AGLF +BOM

FemtoClock® Crystal-to-3.3V LVPECL Frequency Synthesizer

Manufacturer:

Renesas Electronics America Inc
Mfr.Part #:

843242AGLF
Datasheet:

843242AGLF Datasheet (PDF)
Programmabe:

Not Verified
Type:

LVPECL Frequency Synthesizer
Mounting Type:

Surface Mount

843242AGLF General Description

The 843242 is a 2 differential output LVPECL Synthesizer designed to generate Ethernet reference clock frequencies. Using a 31.25MHz or 26.041666MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the settings of 4 frequency select pins (SEL[A1:A0], SEL[B1:B0]): 625MHz, 312.5MHz, 156.25MHz, and 125MHz.

The two banks have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The 843242 IDT's 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet jitter requirements. The 843242 is packaged in a small 16-pin TSSOP package.

Key Features

Two 3.3V differential LVPECL output pairs
Using a 31.25MHz or 26.041666 crystal, the two output banks can be independently set for 625MHz, 312.5MHz, 156.25MHz or 125MHz
Crystal oscillator interface
VCO range: 560MHz to 700MHz
RMS phase jitter @ 625MHz (1.875MHz - 20MHz): 0.4ps (typical)
Full 3.3V supply mode
0°C to 70°C ambient operating temperature
Industrial temperature available upon request
Available in lead-free (RoHS 6) compliant package