QTM252E-20.000MDM-T

Overview

The QTM252E-20.000MDM-T is a CMOS surface-mount oscillator manufactured by QST, operating at a nominal frequency of 20 MHz. It features a compact 4-SMD package with dimensions of 2.5 x 2.0 x 0.8 mm. The device supports supply voltages of 1.8V, 2.5V, and 3.3V, with a maximum operating current of 10 mA. Frequency stability is rated at ±50 ppm, encompassing initial tolerance, aging, temperature, and voltage variations. The unit includes an enable/disable control pin for power management and offers a startup time of up to 5 ms.

Feature Summary

• Compact 2520 surface-mount package design suitable for space-constrained applications
• Low electromagnetic interference (EMI) output characteristics
• Integrated enable/disable functionality via a dedicated control pin
• Wide operating temperature range supporting industrial environments

Applications

• Industrial SSD controller reference clocks
• Bluetooth clock sources in wearable devices
• High-speed bus interfaces including SATA and PCIe
• Wireless communication modules such as WLAN
• Consumer electronics like IP cameras and game consoles

Procurement Notes

Verify the specific suffix 'MDM' against official QST documentation to confirm the exact frequency tolerance and package variant. Ensure the selected part matches the required supply voltage and enable logic levels for your circuit design. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing standards. Confirm that the component meets the necessary industrial temperature ratings if deployed in harsh environments.

Selection Notes

Select this model when a small footprint and low jitter are critical for high-speed digital interfaces. The ±50 ppm stability is suitable for general consumer and industrial applications where tighter tolerances are not required. Consider the integrated enable pin for systems requiring power-saving modes. Verify that the 1.8V/2.5V/3.3V voltage options align with the target system's power rails.

Part Context

This component belongs to the QTM252 series of CMOS active oscillators from QST. The series is designed to provide precise timing solutions for various digital systems. The 2520 package size allows for efficient board space utilization compared to larger traditional oscillator packages. The series supports a wide frequency range, making it versatile for different interface requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.