18QHTF21-20.5972-PD

Oscillators Overview

The 18QHTF21-20.5972-PD is a 20.5972 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a supply voltage of 1.8V and utilizes LVCMOS output levels. The device features a power-down function via the 'PD' suffix, allowing for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The component is supplied in strip packaging.

Oscillators Feature Summary

• Compact 2.0x1.6mm surface-mount footprint suitable for space-constrained designs
• LVCMOS output interface compatible with standard digital logic
• Integrated power-down capability for energy management

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication modules utilizing 20.5972 MHz clock signals
• Consumer electronics with strict size limitations

Oscillators Procurement Notes

Verify the specific ordering suffix 'PD' confirms the power-down functionality required for your design. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm the 4-SMD no-lead package matches your PCB footprint and assembly capabilities. Cross-reference the exact frequency tolerance and stability specifications from the official datasheet before finalizing procurement.

Oscillators Selection Notes

Select this component when a precise 20.5972 MHz reference is needed in a minimal footprint. The 1.8V operation makes it suitable for battery-powered or low-voltage systems. The power-down feature adds value for applications requiring extended battery life through active sleep modes. Compare against other Mercury oscillators if different frequencies or package sizes are preferred.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and package options. The '18QHTF21' prefix indicates the specific family characteristics, while the numeric suffix defines the frequency. This model represents a mid-range frequency option within the company's portfolio of quartz-based timing solutions.

Oscillators Replacement Considerations

Direct substitutes must match the 20.5972 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify that any alternative also includes the power-down pin configuration. Check compatibility with existing firmware or hardware that may rely on the specific enable/disable behavior of the PD pin.