18QHTF21-6.800-PD

Overview

The 18QHTF21-6.800-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 6.8 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and an integrated standby or power-down mode to minimize energy consumption when inactive. The component is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports LVCMOS output signal compatibility
• Includes standby and power-down functionality
• Operates with a 1.8V supply voltage

Applications

• Battery-powered electronic devices
• Portable consumer electronics
• General-purpose digital timing circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to guarantee proper soldering and mechanical stability during operation.

Selection Notes

Select this component when a precise 6.8 MHz clock source is required for LVCMOS-compatible logic families. Consider the 1.8V operating voltage and low current draw as primary factors for portable designs. Evaluate the need for power-down capabilities if energy efficiency is critical. Compare against other frequencies in the 18QHTF21 series if different timing standards are needed.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronic Ind., Co., Ltd. The series offers various frequency options while maintaining consistent electrical characteristics and packaging. Mercury Electronics specializes in quartz crystals and timing solutions, providing reliable components for industrial and commercial applications requiring stable frequency generation.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and electrical specs but different frequencies, such as 18QHTF21-30.000-OE or 18QHTF21-66.000-PD, provided the system timing requirements allow for frequency adjustment. Cross-reference with other manufacturers' 4-SMD LVCMOS oscillators only if pin compatibility and voltage levels match exactly.