18QHTF21-24.9981-PD

Oscillators Overview

The 18QHTF21-24.9981-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a frequency of 24.9981 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The component is designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

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

Oscillators Applications

• General-purpose digital circuit timing
• Embedded system clock generation
• Communication module synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to guarantee proper assembly and electrical connectivity.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The small form factor makes it suitable for space-constrained designs. Consider the power-down feature if energy efficiency during idle states is a priority for the application.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options, including 3.3V variants. The 'PD' suffix typically indicates the presence of a power-down control pin, distinguishing it from continuous-operation models within the same family.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical pinouts and voltage levels but different frequencies, such as 18QHTF21-51.200-PD. Cross-reference with other manufacturers offering 2.0x1.6mm LVCMOS oscillators operating at 1.8V, ensuring frequency and tolerance specs match.