18QHTF21-13.5425-PD

Overview

The 18QHTF21-13.5425-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 13.5425 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to reduce consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with 1.8V supply requirement
• Integrates standby mode for power management efficiency
• Provides LVCMOS digital output signal compatibility

Applications

• General-purpose clock generation for embedded systems
• Timing reference for microcontroller-based circuits
• Data 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 operating voltage aligns with the system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a stable 13.5425 MHz reference is required for low-power applications. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if power conservation is critical. Verify that the operating temperature range meets the environmental conditions of the intended deployment scenario.

Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized small form factor. The 'PD' suffix indicates the inclusion of a power-down control capability, distinguishing it from continuous-operation variants within the same family.

Replacement Considerations

Direct substitutes must match the 13.5425 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Cross-reference pinouts and electrical characteristics carefully. Generic replacements may differ in phase noise or startup time; verify datasheet compatibility to ensure functional equivalence.