IDT, Integrated Device Technology Inc 840004AG-11LF

Description
The 840004-11 is a 4-output LVCMOS/LVTTL synthesizer optimized for generating Ethernet reference clock frequencies. It utilizes a 25MHz, 18pF parallel resonant crystal to generate 125MHz and 62.5MHz based on a frequency select pin (F_SEL). The device employs IDT's 3rd generation low phase noise VCO technology, achieving typical random rms phase jitter of 1ps or lower, meeting Ethernet jitter requirements. It is packaged in a compact 20-pin TSSOP package.

Features
Four single-ended LVCMOS/LVTTL outputs
172 typical output impedance
Crystal oscillator interface
Input frequency range: 22.4MHz to 28MHz
Output frequency range: 56MHz - 140MHz
VCO range: 560MHz - 700MHz
RMS phase jitter at 125MHz (1.875MHz - 20MHz): 0.70ps (typical)
Phase Noise:
Offset: -95.5 dBc/Hz (100Hz)
1kHz: -123.6 dBc/Hz
10kHz: -132.8 dBc/Hz
100kHz: -133.4 dBc/Hz
Frequency Select Function Table for Ethernet Frequencies
Full 3.3V output supply mode
0°C to 70°C ambient operating temperature
Available in lead-free (RoHS 6) package

Applications
Ethernet reference clock generation
Networking equipment
Telecom infrastructure
Industrial automation
Test and measurement equipment