18QHTF21-65.5636-PD

Overview

The 18QHTF21-65.5636-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 65.5636 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode for power management efficiency
• Utilizes a lead-free SMD package for automated assembly

Applications

• General purpose clock generation
• Digital signal processing systems
• Communication equipment timing

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application design before procurement. Ensure that the 1.8V supply voltage aligns with the system power rails. Confirm that the 4-SMD no-lead package dimensions fit within the designated PCB footprint constraints to avoid mechanical interference during assembly.

Selection Notes

Select this component when a 65.5636 MHz frequency is required with low voltage operation. Consider the LVCMOS output level if interfacing with standard CMOS logic families. Evaluate the need for standby functionality to manage power consumption in portable or battery-operated devices. Compare package size against available board space.

Part Context

This part belongs to the QHTF series of quartz crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The 'PD' suffix indicates the presence of a power-down feature. This specific model provides a fixed frequency solution for timing applications requiring stable clock sources.

Replacement Considerations

Check datasheets for equivalent models with matching frequency, voltage, and package. Verify pinout compatibility for direct replacement. Ensure output logic levels are identical to prevent signal integrity issues.