18QHTF21-13.494-PD

Overview

The 18QHTF21-13.494-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 13.494 MHz and utilizes LVCMOS output logic. 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 designed for surface mount applications. The component is engineered to operate reliably within an industrial temperature range of -40°C to 85°C.

Feature Summary

• Supports low voltage operation with integrated standby mode
• Provides stable LVCMOS signal output for digital circuits
• Utilizes leadless surface mount packaging for automated assembly

Applications

• General purpose clock generation for embedded systems
• Timing reference for microcontroller units
• Synchronization in consumer electronic devices

Procurement Notes

Verify the specific frequency suffix matches the required system timing. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package dimensions fit the available PCB footprint. Check for any specific RoHS compliance requirements if applicable to the end product regulations.

Selection Notes

Select this component when a precise 13.494 MHz clock source is required for low-power applications. Consider the LVCMOS interface compatibility with the receiving logic gates. Evaluate the thermal performance against the expected operating environment limits. Compare physical size constraints against alternative packages in the same series.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized small outline package. The series is designed for cost-effective mass production in consumer electronics. Similar parts in the lineup differ primarily by their nominal frequency output while maintaining identical electrical characteristics and form factors.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequency suffixes if the timing requirement allows adjustment. Cross-brand replacements must match the 1.8V supply, LVCMOS output, and 4-SMD no-lead package specifications exactly.