18QHTF21-13.5545-OE

Overview

The 18QHTF21-13.5545-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.5545 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm, suitable for surface mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated enable/disable pin for power control
• Compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded microcontroller clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit's power rails. Ensure the 4-SMD no-lead footprint matches the PCB layout constraints. Check for any specific storage or handling conditions recommended by the manufacturer to maintain component integrity during assembly.

Selection Notes

Select this component when a low-voltage, small-form-factor oscillator is required for LVCMOS-compatible circuits. The enable/disable functionality makes it suitable for battery-powered or power-sensitive designs. Consider the operating temperature range and stability requirements relative to the application environment. Compare alternative frequencies within the same series if the exact 13.5545 MHz value is not strictly necessary.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various standard XO options in a 2.0x1.6 mm package. The series supports multiple frequencies and voltages, providing flexibility for different embedded applications. The 'OE' suffix typically denotes the presence of an output enable function, distinguishing it from basic versions without control pins.

Replacement Considerations

Direct replacements must match the 13.5545 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify that substitute parts offer compatible enable/disable functionality and similar electrical characteristics. Cross-reference with other manufacturers offering equivalent SMD oscillators if Mercury Electronics stock is unavailable.