IDT, Integrated Device Technology Inc 840004AG-01LFT

Description
The 840004-01 is a 4-output LVCMOS/LVTTL synthesizer designed for generating Ethernet reference clock frequencies. Utilizing a 25MHz, 18pF parallel resonant crystal, it can produce frequencies of 156.25MHz, 125MHz, and 62.5MHz based on the frequency select pins (FSEL1:0). The synthesizer employs IDT's 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.

Features
Four single-ended LVCMOS/LVTTL outputs
172 typical output impedance
Selectable crystal oscillator interface or single-ended input
Output frequency range: 56MHz-175MHz
VCO range: 560MHz-700MHz
RMS phase jitter at 156.25MHz (1.875MHz-20MHz): 0.52ps (typical)
Phase Noise:
Offset: -94.9 dBc/Hz
100Hz: -119.6 dBc/Hz
1kHz: -128.9 dBc/Hz
10kHz: -129.2 dBc/Hz
Full 3.3V or mixed 3.3V core/2.5V output supply modes
0°C to 70°C ambient operating temperature
Lead-free (RoHS 6) package available

Applications
Ethernet reference clock generation
Network interface cards
Ethernet switches and routers
Industrial control systems
Test and measurement equipment