18QHTF21-21.47727-PD

Oscillators Overview

The 18QHTF21-21.47727-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 21.47727 MHz and utilizes LVCMOS output logic levels. The component is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features a standby or power-down function to manage energy consumption when the device is not actively transmitting clock signals. The physical package is a 4-SMD, No Lead surface-mount configuration, suitable for automated assembly processes in compact electronic designs.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode capability for power management
• Designed for low-voltage operation at 1.8V

Oscillators Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems with low-power constraints

Oscillators Procurement Notes

Verify that the specific part number matches the required frequency and voltage specifications before ordering. Confirm that the 4-SMD no-lead package dimensions align with the target PCB footprint. Ensure the supplier provides official documentation from Mercury Electronics Ind. Co. Ltd to guarantee authenticity and compliance with manufacturing standards.

Oscillators Selection Notes

Select this component when a 21.47727 MHz reference is needed with LVCMOS compatibility. Consider the 1.8V supply requirement against system power rails. Evaluate the need for standby functionality if power efficiency is critical. Compare package size against available board space. Verify temperature range requirements against application environment.

Oscillators Part Context

This oscillator belongs to the QHTF series from Mercury Electronics, characterized by surface-mount construction and standard frequency outputs. The '18' prefix typically indicates the 1.8V supply variant within this product line. These components are engineered for reliability in consumer and industrial electronics where stable clock generation is essential for data synchronization and system timing.

Oscillators Replacement Considerations

Direct substitutes include other 21.47727 MHz LVCMOS oscillators with identical 1.8V supply and 4-SMD no-lead packages. Verify pinout compatibility and electrical characteristics such as phase noise and stability before swapping. Alternative parts must support the same standby function if power management is required.