QTM325-14.31818MBE-T

Overview

The QTM325-14.31818MBE-T is a surface-mount CMOS oscillator manufactured by QST, operating at a nominal frequency of 14.31818MHz. It features a supply voltage range of 3.3V and a frequency stability of ±50ppm. The device utilizes a compact 3.2mm x 2.5mm package with a height of 1mm. It supports an operating temperature range from -40°C to +85°C. This component provides stable clock signals for embedded systems requiring precise timing synchronization.

Feature Summary

• Surface mount CMOS output configuration
• Compact 3.2mm x 2.5mm footprint
• Wide industrial temperature range support

Applications

• Embedded communication applications
• Timing synchronization in microcontroller systems
• General purpose clock generation for digital circuits

Procurement Notes

Verify the manufacturer designation on official documentation, as sources list both TXC and QST for this part number. Confirm the specific suffix 'T' indicates tape and reel packaging if required by assembly processes. Ensure the frequency tolerance of ±50ppm meets system requirements. Cross-reference the pinout diagram with the specific datasheet version to avoid interface mismatches during PCB layout.

Selection Notes

Select this component when a low-profile 1mm height is necessary for space-constrained designs. The 14.31818MHz frequency is suitable for standard baud rate generation in serial communications. Consider the ±50ppm stability limit against system jitter requirements. The CMOS output level simplifies interfacing with standard logic families without additional level shifting circuitry.

Part Context

This oscillator belongs to the QTM325 series, which includes various frequencies such as 16.384MHz, 30MHz, and 50MHz. The series shares the same 3.2mm x 2.5mm SMD package dimensions. QST positions this line within their broader portfolio of timing devices and crystals. The model represents a specific frequency variant optimized for common data transmission rates.

Replacement Considerations

Direct substitutes include other QTM325 series variants like QTM325-16.384MBE-T or QTM325-30.000MBE-T if frequency adjustment is permissible. Verify that alternative parts maintain the same 3.3V supply and ±50ppm stability. Check for equivalent thermal performance within the -40°C to +85°C range.