QTM750SH-322.000MBE-T

Overview

The QTM750SH-322.000MBE-T is a crystal oscillator (XO) manufactured by QST, operating at a nominal frequency of 322.000 MHz. It utilizes HCSL output signaling and features CMOS-compatible logic levels. The device supports an enable/disable function via a 3.3V control input. Designed for surface-mount applications, it is housed in a compact 4-SMD, no-lead package. The unit offers a frequency stability of ±50 ppm and operates within a temperature range of -40°C to +85°C. It complies with RoHS standards and is lead-free.

Feature Summary

• HCSL output signaling for high-speed interface compatibility
• Integrated enable/disable functionality controlled by 3.3V logic
• Compact 4-SMD no-lead surface-mount package design

Applications

• High-speed digital signal processing systems
• Telecommunications equipment requiring precise clocking
• Network infrastructure components

Procurement Notes

Verify the specific suffix 'SH' indicates HCSL output rather than standard CMOS when replacing similar QTM750 variants. Confirm the 322 MHz frequency requirement matches the target circuit design exactly. Ensure the 4-SMD footprint aligns with the PCB layout specifications. Check that the ±50 ppm stability meets the system timing budget requirements before finalizing procurement orders.

Selection Notes

Select this component when HCSL output signaling is required instead of standard CMOS outputs found in other QTM750 models. The 322 MHz frequency is specific; ensure no alternative frequency is needed. The enable/disable pin allows for power management integration. Verify the operating temperature range covers the intended environmental conditions for reliable performance in industrial or telecom settings.

Part Context

This part belongs to the QTM750 series of surface-mount oscillators from QST. The 'SH' designation distinguishes it from standard CMOS output versions by providing HCSL signaling. It shares the same physical footprint and enable/disable functionality as other members of the family but differs in output voltage swing characteristics suitable for high-speed serial links.

Replacement Considerations

Direct substitutes must match the 322 MHz frequency, HCSL output type, and 4-SMD package. Generic CMOS output oscillators are not compatible due to signaling differences. Verify pinout compatibility if considering cross-brand alternatives.