18QHTF21-21.949218-PD

Oscillators Overview

The 18QHTF21-21.949218-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 21.949218 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6mm. The component is designed for applications requiring precise clock signals within a small form factor.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby and power-down functionality
• Compact 4-SMD no lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded systems requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no lead package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet to ensure reliability under your environmental conditions.

Oscillators Selection Notes

Select this component when a precise 21.949218 MHz clock source is required in a minimal space. The LVCMOS output is suitable for standard digital logic families. Consider the power-down feature if battery life or thermal management is a priority. Compare against other Mercury oscillators in the 18QHTF21 series for alternative frequencies or package options if needed.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface mount crystal oscillators. The series offers various frequencies and output types in a standardized small outline package. Mercury Electronics specializes in quartz frequency control products, including crystals, oscillators, and filters, providing reliable components for electronic applications.

Oscillators Replacement Considerations

Direct replacements must match the 21.949218 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD no lead package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise. Consult Mercury Electronics for cross-reference lists or equivalent parts within their product portfolio.