18QHTF21-63.223-PD

Overview

The 18QHTF21-63.223-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 63.223 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm. This component is designed for applications requiring precise timing signals within space-constrained electronic systems.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Features a compact surface-mount package design

Applications

• Digital signal processing circuits
• Communication equipment timing references
• Embedded system clock generation
• Consumer electronics timing modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this model when a 63.223 MHz clock source is required with low power consumption capabilities. The LVCMOS interface makes it suitable for direct connection to standard digital logic families. Consider the standby feature if power management is critical for the application. The small form factor allows for integration into dense circuit boards where space is limited.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on micro-sized crystal oscillators. The series typically offers various frequencies and voltage options within a standardized 2.0x1.6 mm package. The 'PD' suffix indicates the inclusion of power-down functionality, distinguishing it from continuous-operation variants in the same family.

Replacement Considerations

Direct substitutes must match the 63.223 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pin compatibility and thermal characteristics. Alternative models from other manufacturers may require level shifting if their output logic differs from LVCMOS.