18QHTF21-19.687-OE

Oscillators Overview

The 18QHTF21-19.687-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.687 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, no lead package suitable for surface mount applications.

Oscillators Feature Summary

• Standard XO configuration with LVCMOS output
• Integrated enable and disable control
• Compact 4-SMD no lead surface mount package

Oscillators Applications

• Timing and clock signal generation
• Electronic device synchronization
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Ensure the 1.8V supply voltage aligns with the target circuit design. Confirm that the 4-SMD no lead package dimensions fit within the designated PCB footprint constraints to avoid assembly issues.

Oscillators Selection Notes

Select this component when a precise 19.687 MHz clock source is required with low voltage operation. The integrated enable feature makes it suitable for battery-powered or power-sensitive designs. Consider the LVCMOS output compatibility with downstream digital logic interfaces during system architecture planning.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized small outline package format. Mercury Electronic has established itself as a pioneer in quartz crystal manufacturing since 1973, providing reliable frequency control products.

Oscillators Replacement Considerations

Direct substitutes include other 19.687 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as phase noise and stability before substitution.