18QHTF21-75.680-PD

Overview

The 18QHTF21-75.680-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.68 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with 1.8V supply
• Includes standby and power-down functionality
• Provides LVCMOS output signal compatibility

Applications

• General-purpose digital circuit timing
• Embedded system clock generation
• Communication interface synchronization

Procurement Notes

Verify the exact operating temperature range and load capacitance requirements against your specific design constraints before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout to avoid assembly issues. Cross-reference the datasheet for any specific handling precautions related to the component.

Selection Notes

Select this model when a 75.68 MHz frequency is required with LVCMOS outputs. Consider the 1.8V supply constraint and the availability of a standby mode for power management. Evaluate the 4-SMD package size against spatial limitations. Compare performance metrics such as phase noise and stability if available in official documentation to ensure suitability for the application.

Part Context

This component belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within similar packages. The 'PD' suffix likely indicates the inclusion of a power-down feature, distinguishing it from standard continuous-operation variants in the same family.

Replacement Considerations

Direct substitutes must match the 75.68 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics. Consult manufacturer cross-reference lists for confirmed equivalent part numbers.