18QHTF21-18.516554-PD

Oscillators Overview

The 18QHTF21-18.516554-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.516554 MHz and utilizes an LVCMOS output interface. 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, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded control circuits

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Request the official datasheet from Mercury Electronics for detailed electrical specifications and reliability data.

Oscillators Selection Notes

Select this component when a precise 18.516554 MHz reference is required for LVCMOS-compatible digital interfaces. Consider the low-profile 4-SMD package for space-constrained designs. Evaluate the power-down feature if energy efficiency during idle states is critical. Compare alternative frequencies within the same series if exact matching is not possible.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent LVCMOS outputs and 1.8V operation. The 'PD' suffix typically indicates the inclusion of a power-down pin or function. These components are designed for general-purpose timing applications in consumer and industrial electronics.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies, such as 18QHTF21-18.8696-PD, provided the frequency difference is acceptable. Cross-reference with other manufacturers offering 4-SMD LVCMOS oscillators at 1.8V, ensuring pinout and electrical characteristics match.