18QHTF21-11.24565-PD

Overview

The 18QHTF21-11.24565-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 11.24565 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes a standby or power-down control feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm by 1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode capability
• Provides LVCMOS signal output

Applications

• General clock generation in embedded systems
• Timing reference for digital circuits
• Communication interface synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail stability meets the oscillator's operational specifications. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to guarantee proper solder joint formation during assembly.

Selection Notes

Select this component when a precise 11.24565 MHz timing source is required within space-constrained designs. The choice is appropriate for applications necessitating low-power consumption due to the 1.8V operating voltage. Consider the LVCMOS interface compatibility with downstream logic gates to ensure signal integrity without additional level shifting components.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequency options within a standardized small outline package format. The suffix PD indicates the inclusion of a power-down pin for active management of device states.

Replacement Considerations

Direct substitutes must match the 11.24565 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify equivalent electrical parameters such as phase noise and jitter if critical to the application performance.