18QHTF21-20.560-PD

Oscillators Overview

The 18QHTF21-20.560-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 20.56 MHz with an LVCMOS output signal. The device functions on a 1.8V supply voltage and includes a standby (power down) feature. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• LVCMOS output interface for standard logic compatibility
• Integrated standby mode for power management
• Compact surface-mount package design

Oscillators Applications

• General purpose clock generation
• Digital signal processing circuits
• Communication equipment timing

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V operating voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout specifications to avoid assembly issues.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The choice is driven by the need for a small 2.0x1.6mm form factor in space-constrained designs. Consider the standby functionality if power efficiency during idle states is a priority for the application.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on high-frequency stability oscillators. The series typically offers various frequency options within a standardized small outline package. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from standard continuous-operation variants.

Oscillators Replacement Considerations

Direct substitutes include other 20.56 MHz LVCMOS oscillators in 4-SMD packages operating at 1.8V. Verify pinout compatibility and electrical parameters such as phase noise and stability before swapping manufacturers.