18QHTF21-13.54856-PD

Overview

The 18QHTF21-13.54856-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.54856 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features 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.

Feature Summary

• Supports standby mode via power-down control
• Utilizes LVCMOS output interface
• Operates on a 1.8V supply rail

Applications

• Battery-powered portable devices
• General-purpose digital timing circuits
• Embedded systems requiring low-power oscillation

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Confirm that the 1.8V operating 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 precise 13.54856 MHz clock signal is required with minimal power consumption. The integrated power-down feature makes it suitable for battery-operated equipment where standby current reduction is critical. Ensure compatibility with LVCMOS logic levels in the receiving circuitry.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various XO, TCXO, and VCTCXO options. This specific model represents a standard oscillator variant optimized for low-voltage operation and compact form factors.

Replacement Considerations

Direct substitutes include other 13.54856 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as phase noise and stability before substitution.