18QHTF21-13.538-PD

Overview

The 18QHTF21-13.538-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.538 MHz and utilizes LVCMOS output logic levels. 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 package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface
• Standby power control
• Surface-mount packaging

Applications

• Digital signal processing systems
• Communication equipment timing
• Microcontroller clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. 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 avoid assembly issues.

Selection Notes

Select this component when a low-voltage, single-ended LVCMOS clock source is required. Consider the standby feature if power efficiency during idle states is critical. Verify that the operating temperature range meets your environmental specifications and that the package size fits within your board space limitations.

Part Context

This part belongs to Mercury Electronics' series of quartz-based timing devices. The manufacturer specializes in frequency control products including crystals, oscillators, and filters. This specific model represents a standard XO variant optimized for modern digital circuits requiring stable clock signals.

Replacement Considerations

Check for direct substitutes from Mercury Electronics with identical pinouts and electrical characteristics. Ensure any replacement maintains the 1.8V supply requirement and LVCMOS output compatibility. Verify frequency stability and package dimensions match the original design constraints.