18QHTF21-66.213-PD

Overview

The 18QHTF21-66.213-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.213 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications in a 4-SMD, No Lead package. It supports a supply voltage of 1.8V and includes a standby or power down function. The operating temperature range extends from -40°C to 85°C.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby and power down functionality for energy management
• Designed for surface mount assembly in compact packages

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package dimensions fit within the available PCB footprint constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable joint formation during assembly processes.

Selection Notes

Select this component when a precise 66.213 MHz clock source is required for LVCMOS compatible circuits. Consider the 1.8V supply constraint and the need for power-down capabilities. Evaluate the thermal performance within the specified -40°C to 85°C range for the intended environment. Compare against other frequencies in the 18QHTF21 series if different timing standards are needed.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface mount oscillators. The series offers various standard frequencies with LVCMOS outputs. Mercury Electronics is a established manufacturer of frequency control products, providing quartz-based solutions for electronic applications. This specific model represents one of the standardized frequency options available in this product line.

Replacement Considerations

Other models in the 18QHTF21 series, such as 18QHTF21-96.768-PD or 18QHTF21-51.200-PD, share similar packaging and electrical characteristics but operate at different frequencies. Direct substitution requires matching the exact frequency requirement of the application. Verify pinout and voltage compatibility when considering alternative frequencies within the same family.