# Connor-Winfield MSD644 Crystal Controlled Oscillator

## Description & Features

️· Type: Hermetically sealed surface mount 5.0V Crystal Controlled Oscillator (XO), HCMOS/TTL Compatible.
️· Applications: Designed for low jitter and tight stability applications.
️· Features:
- 5.0V Operation
- Low Jitter: <1ps RMS
- Frequency Tolerance: ±20 ppm
- Operating Temperature Range: -40°C to 85°C
- Tri-State Enable/Disable Function
- Tape and Reel Packaging
️· Center Frequency: 51.84 MHz
️· HCMOS Clock Series

## Specifications

Absolute Maximum Ratings

️· Storage Temperature: -55°C to 125°C
️· Supply Voltage (Vcc): -0.5V to 7Vdc

Operating Specifications

️· Frequency Range (Fo): 1.8 MHz to 80 MHz
️· Total Frequency Tolerance: -20 ppm to 20 ppm
️· Supply Voltage (Vcc): 4.50V to 5.50V
️· Supply Current (Icc): Up to 50 mA
️· Jitter (BW=10Hz to 20MHz): Up to 5 ps rms
️· Jitter (BW=12kHz to 20MHz): Up to 1 ps rms
️· Phase Noise: Specifications provided for various offset frequencies (10Hz, 100Hz, 1kHz, 10kHz, 00kHz)

Input Characteristics

️· Tri-State Enable Voltage (Vih): >70%Vcc
️· Tri-State Disable Voltage (Vil): <30%Vcc

HCMOS Output Characteristics

️· Load: 50 pF
️· Output Voltage (High/Low): Voh > 0.9(Vcc), Vol < 0.1(Vcc)
️· Output Current (High/Low): Ioh -16 mA, Ioh 16 mA
️· Duty Cycle: 45% to 55%
️· Rise/Fall Time: 1.5 ns to 3 ns

Package Characteristics

️· Hermetically sealed, ceramic package with gold plated J leads.

## Notes

️· Specifications inclusive of calibration, frequency vs. temperature stability, supply voltage change, load change, shock, vibration, and 20 years aging.
️· Oscillator output enabled with no connection on pad 1