18QHTF21-20.460-PD

Oscillators Overview

The 18QHTF21-20.460-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 20.46 MHz and utilizes LVCMOS output logic levels. The device requires a supply voltage of 1.8V and features a standby function for power down control. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Oscillators Feature Summary

• LVCMOS output interface
• Standby power down capability
• Compact 4-SMD no lead package

Oscillators Applications

• General purpose clock generation
• Digital signal processing systems
• Embedded controller timing

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational range. Ensure the PCB footprint matches the 4-SMD no lead package dimensions provided in the official mechanical drawing to prevent assembly issues.

Oscillators Selection Notes

Select this component when a low-profile surface mount oscillator with LVCMOS outputs is required. The 1.8V supply voltage makes it suitable for modern low-power digital logic families. Consider the standby feature if power management during idle periods is a system requirement. Verify temperature stability needs against the standard commercial or industrial grade specifications.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface mount oscillators from Mercury Electronics. The series offers various frequencies and supply voltages. The PD suffix indicates the presence of a standby pin for power control, distinguishing it from continuous operation variants like the OE suffix models.

Oscillators Replacement Considerations

Direct substitutes must match the 20.46 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check manufacturer datasheets for equivalent parts with identical pinout and electrical characteristics to ensure compatibility without circuit redesign.