18QHTF21-6.480-PD

Overview

The 18QHTF21-6.480-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a fixed frequency of 6.48 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range typical for commercial grade industrial standards, ensuring reliable timing performance in space-constrained electronic designs.

Feature Summary

• Integrates LVCMOS output interface for direct digital logic compatibility
• Includes dedicated standby power-down functionality to minimize energy consumption
• Utilizes a miniature 4-SMD no-lead surface mount package for automated assembly

Applications

• Portable consumer electronics requiring precise clock signals
• Battery-operated devices necessitating low power consumption
• Embedded systems utilizing LVCMOS compatible microcontrollers

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 footprint matches your PCB layout constraints. Check for any specific handling instructions regarding electrostatic discharge sensitivity during storage and installation processes.

Selection Notes

Select this component when a 6.48 MHz reference signal is required for LVCMOS interfaces. Consider the 1.8V operation if power efficiency is critical compared to higher voltage alternatives. Evaluate the small form factor suitability for dense PCB layouts. Compare performance metrics such as phase noise and stability against other oscillators in the same series to ensure compliance with system timing specifications.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down control pin. These components are engineered for high-volume manufacturing and provide stable timing solutions for modern digital circuits.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and electrical characteristics but different frequencies. Verify compatibility with existing firmware or hardware dependencies on the specific 6.48 MHz clock rate before swapping.