18QHTF21-26.990-PD

Oscillators Overview

The 18QHTF21-26.990-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 26.99 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby/power-down functionality
• Utilizes LVCMOS output interface

Oscillators Applications

• General electronic timing circuits
• Digital signal processing systems
• Communication equipment

Oscillators Procurement Notes

Verify the specific part number suffix to ensure compatibility with required frequency and package specifications. Confirm that the manufacturer's datasheet aligns with system requirements before procurement. Cross-reference official documentation to validate electrical characteristics and operational parameters.

Oscillators Selection Notes

Select this component based on the requirement for a 26.99 MHz clock source with LVCMOS outputs. Ensure the design supports 1.8V logic levels and accommodates the 2.0x1.6 mm surface-mount footprint. Consider the need for power-down control if energy efficiency is a priority.

Oscillators Part Context

This oscillator belongs to the Mercury Electronics XO series, characterized by small form factors and standard CMOS outputs. The 18QHTF21 series typically offers reliable frequency stability for general-purpose applications requiring precise timing signals in compact electronic devices.

Oscillators Replacement Considerations

Direct substitutes include other 26.99 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and voltage specifications when considering alternative sources.