18QHTF21-42.500-PD

Oscillators Overview

The 18QHTF21-42.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 42.5 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Oscillators Feature Summary

• Supports standby mode for power management
• Utilizes LVCMOS output interface
• Designed for low voltage operation

Oscillators Applications

• Battery-powered portable devices
• General purpose clock signal generation
• Embedded system timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 4-SMD no lead package dimensions align with your PCB footprint. Ensure the 1.8V supply rail can support the maximum current draw specified in the official datasheet to maintain stable oscillation.

Oscillators Selection Notes

Select this component when a precise 42.5 MHz clock source is required with low power consumption constraints. The LVCMOS output is suitable for digital logic interfaces. Consider the operating temperature range and stability requirements relative to the application environment. The integrated standby feature aids in energy efficiency for portable designs.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized small form factor. The series is designed for applications requiring reliable timing signals in space-constrained environments. Mercury Electronics has extensive experience in quartz crystal manufacturing, providing consistent quality across its frequency control product lines.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinouts but different frequencies, such as 18QHTF21-51.200-PD or 18QHTF21-68.665-PD, provided the frequency difference is acceptable for the system design. Cross-referencing electrical parameters is essential.

Oscillators FAQ

Does the PD suffix indicate a specific packaging type?

The PD suffix typically denotes the specific package configuration or tape and reel availability as defined by the manufacturer's ordering nomenclature.

What is the output waveform type?

The device outputs an LVCMOS (Low Voltage Complementary Metal-Oxide-Semiconductor) square wave signal.