18QHTF21-63.885-PD

Overview

The 18QHTF21-63.885-PD is a standard LVCMOS crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 63.885 MHz with a supply voltage of 1.8V. The device features a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. Key functional characteristics include standby (power down) capability and support for spread spectrum functionality. This component is designed for applications requiring precise timing signals in low-voltage digital systems.

Feature Summary

• Standard LVCMOS output logic for digital interface compatibility
• Integrated standby mode for power management
• Compact surface-mount package design

Applications

• Digital signal processing circuits
• Communication equipment timing
• Embedded system clock generation

Procurement Notes

Verify the specific operating temperature range 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 PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent assembly issues. Check for any specific handling instructions regarding electrostatic discharge protection during storage and installation.

Selection Notes

Select this oscillator when a 63.885 MHz clock source is required with low voltage operation. Consider the 1.8V supply constraint and the need for standby functionality. Evaluate the size constraints of the 2.0x1.6mm package against available board space. Compare performance metrics such as jitter and stability if available in official documentation to ensure suitability for high-speed data transmission applications.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a small form factor. The 'PD' suffix likely indicates a specific packaging or tape-and-reel configuration. Mercury Electronics specializes in quartz-based frequency control products, leveraging decades of manufacturing expertise in Taiwan.

Replacement Considerations

Direct substitutes must match the 63.885 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications. Consult manufacturer cross-reference lists for approved alternatives. Ensure thermal and mechanical properties are equivalent to maintain system reliability.