18QHTF21-45.545-PD

Oscillators Overview

The 18QHTF21-45.545-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 45.545 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead surface-mount package with dimensions of 2.00mm x 1.60mm and a maximum height of 2.00mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power reduction
• Utilizes LVCMOS output interface

Oscillators Applications

• General-purpose digital timing circuits
• Embedded system clock generation
• Consumer electronics requiring precise frequency references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead footprint matches the PCB land pattern to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a stable 45.545 MHz reference is required in space-constrained applications. The choice is driven by the need for low-power consumption via the standby feature and compatibility with 1.8V logic families. Consider the small form factor for high-density board layouts where larger packages are not feasible.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, a supplier specializing in quartz crystals and oscillators. The series typically offers various frequencies within a standardized surface-mount package. The 'PD' suffix likely indicates specific packaging or pin configuration details consistent with the manufacturer's catalog structure.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical electrical characteristics but different frequencies, such as 18QHTF21-44.530-PD or 18QHTF21-51.200-PD, provided the frequency difference is acceptable for the application.