18QHTF21-19.444-PD

Oscillators Overview

The 18QHTF21-19.444-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 19.444 MHz. It utilizes an LVCMOS output interface and functions with a supply voltage of 1.8V. The device features a standby or power-down capability for energy management. It is housed in a compact surface-mount package measuring 2.0mm by 1.6mm. This component serves as a precise clock source for digital circuits requiring stable timing signals within low-voltage applications.

Oscillators Feature Summary

• Provides a stable 19.444 MHz clock signal via LVCMOS output
• Operates on a 1.8V power supply for low-voltage compatibility
• Includes standby mode functionality to reduce power consumption

Oscillators Applications

• Digital logic circuit timing references
• Embedded system clock generation
• Communication interface synchronization

Oscillators Procurement Notes

Verify the exact datasheet specifications directly from Mercury Electronics Ind. Co. Ltd before integration. Confirm that the 1.8V supply voltage aligns with your system design. Ensure the 2.0x1.6mm footprint matches your PCB layout requirements. Check for RoHS compliance status if required by your manufacturing standards. Validate the LVCMOS output levels against your receiving logic thresholds.

Oscillators Selection Notes

Select this model when a 19.444 MHz frequency is specifically required for the application. The 1.8V operating voltage makes it suitable for modern low-power digital designs. The small 2.0x1.6mm package is ideal for space-constrained boards. Consider the standby feature if power efficiency during idle states is a priority. Ensure the LVCMOS output is compatible with the target load capacitance.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and package options. Mercury has been a manufacturer of quartz crystals since 1973. The company is based in Taiwan and specializes in frequency control products. This specific model represents a standard XO variant within their portfolio.

Oscillators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference data through official Mercury Electronics channels. Ensure any replacement matches the 19.444 MHz frequency and 1.8V voltage requirements. Confirm the 2.0x1.6mm package dimensions for mechanical compatibility.