18QHTF21-65.540-PD

Overview

The 18QHTF21-65.540-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 65.540 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby (power down) feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates standby mode to reduce power consumption during idle periods
• Utilizes a leadless SMD package for surface-mount assembly

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems operating at 1.8V logic levels

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 no-lead footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a 65.540 MHz reference is needed with low voltage operation. Consider the 1.8V supply constraint and LVCMOS output compatibility with your target microcontroller or FPGA. Evaluate the small 2.0x1.6 mm package size against available board space. Compare performance metrics such as phase noise and stability if available in official datasheets.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 1.8V LVCMOS form factor. The series provides consistent packaging and electrical characteristics across different frequency options, simplifying inventory management for designs requiring multiple clock speeds.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinout and voltage but different frequencies, such as 18QHTF21-66.008-PD or 18QHTF21-51.200-PD, provided the frequency difference is acceptable for the application.