18QHTF21-19.900-PD

Oscillators Overview

The 18QHTF21-19.900-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.9 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• LVCMOS output interface
• Standby (Power Down) capability
• Compact 4-SMD No Lead form factor

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Oscillators Procurement Notes

Verify the specific ordering suffix to confirm the output voltage level and package variant. Ensure the required frequency tolerance and load capacitance match the target circuit design requirements before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a low-profile surface-mount oscillator is required for space-constrained designs. Consider the 1.8V supply requirement and LVCMOS compatibility with downstream digital logic interfaces during the schematic capture phase.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan producing crystals and oscillators, positioning this model within their standard XO lineup.

Oscillators Replacement Considerations

Direct substitutes include other 19.9 MHz LVCMOS oscillators in 2016 packages. Verify pinout compatibility and electrical specifications against models like the 18QHTF21-19.879-PD if frequency adjustments are permissible.