18QHTF21-13.5665-PD

Overview

The 18QHTF21-13.5665-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.5665 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.

Feature Summary

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

Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Cross-reference the datasheet for operating temperature range specifications to guarantee reliability under your environmental conditions.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The 13.5665 MHz frequency is suitable for RFID and wireless communication interfaces. Consider the small form factor if space constraints are critical. Verify that the package type meets your assembly capabilities and that the standby feature provides sufficient power savings for your application.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized 4-SMD package. The 'PD' suffix indicates the inclusion of a power-down control feature. This family is designed for consumer electronics and portable devices requiring stable timing with low power consumption profiles.

Replacement Considerations

Direct substitutes may include other 13.5665 MHz LVCMOS oscillators in 4-SMD packages from manufacturers like Epson or SiTime. Ensure voltage levels and pinout configurations match exactly. Verify that alternative parts support the same standby functionality and meet identical size constraints for board replacement.