18QHTF21-56.649758-PD

Overview

The 18QHTF21-56.649758-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 56.649758 MHz with LVCMOS output logic and a 1.8V supply voltage. The device features a Standby (Power Down) function and is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby power-down capability for energy efficiency
• Utilizes LVCMOS output logic for digital interface compatibility
• Designed in a small form factor surface-mount package

Applications

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

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before ordering. 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 constraints to guarantee proper assembly and electrical connection.

Selection Notes

Select this component when a precise 56.649758 MHz clock source is required for low-power applications. The LVCMOS output ensures compatibility with standard digital logic families. Consider the 1.8V operating voltage if your system utilizes lower voltage domains compared to traditional 3.3V or 5V designs.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal products. The series offers various frequencies within a standardized 2.0x1.6mm package, providing designers with consistent mechanical footprints while allowing flexibility in frequency selection for different timing needs.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with compatible frequencies such as 18QHTF21-51.200-PD or 18QHTF21-48.7056-PD, provided the frequency difference is acceptable for the application.