Zarlink approved TCXO for GR-1244 & GR-253 Stratum 3 applications. Frequency Parameters Frequency 20.0MHz Frequency Stability ±0.28ppm Ageing ±4.6ppm max after 20 years Holdover Stability [±(Fmax-Fmin)/2Fo]: Temperature, *5 to 80°C, inclusive of Supply Voltage: 3.3V ±5% and Ageing, 2.
