QTT325-16.367667MBN-T

Overview

The QTT325-16.367667MBN-T is a Temperature Compensated Crystal Oscillator (TCXO) manufactured by QST, operating at a nominal frequency of 16.367667 MHz. It utilizes a clipped sine wave output format and requires a supply voltage of 3.3V. The device is housed in a compact 4-SMD, No Lead surface-mount package with dimensions of 1.6mm x 1.2mm. It offers high frequency stability of ±2ppm over the specified operating temperature range of -30°C to +85°C, making it suitable for precision timing applications requiring low phase noise and stable performance under thermal variations.

Feature Summary

• Integrated temperature compensation circuitry ensures stable frequency output across wide thermal ranges
• Compact SMD footprint designed for space-constrained printed circuit board layouts
• Clipped sine wave output signal optimized for digital clock distribution networks

Applications

• Wireless communication modules requiring precise carrier synchronization
• GPS receiver systems needing accurate time-base references
• High-speed data transmission interfaces demanding low jitter clocks
• Portable electronic devices with strict size and power constraints

Procurement Notes

Verify that the target application supports the 3.3V supply voltage requirement and clipped sine wave output characteristics. Confirm that the PCB layout accommodates the specific 4-SMD no-lead package dimensions to ensure proper solder joint formation. Check system design for compatibility with the ±2ppm frequency stability specification relative to other timing components in the signal chain.

Selection Notes

Select this component when high frequency stability is critical within a limited physical envelope. The TCXO technology provides superior performance compared to standard crystals in varying thermal environments. Ensure the load circuit can handle the clipped sine wave output without additional buffering if required by downstream logic families.

Part Context

This part belongs to the QTT325 series of temperature-compensated crystal oscillators from QST. The series is characterized by its small form factor and high stability, targeting modern electronics where space and timing accuracy are paramount. It complements other QST oscillator products offering different frequencies and output types.

Replacement Considerations

Direct substitutes include other QTT325 series variants with matching frequency and package, such as QTT325-16.368MBN-T, provided the frequency tolerance aligns with system requirements. Cross-brand replacements must match the 3.3V supply, clipped sine output, and ±2ppm stability over the -30°C to +85°C range.