18QHTF21-20.22977-PD

Oscillators Overview

The 18QHTF21-20.22977-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 20.22977 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) enable/disable function to manage power consumption. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

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

Oscillators Applications

• Portable electronic devices requiring low power operation
• Communication equipment utilizing LVCMOS interfaces
• Embedded systems needing precise clock synchronization

Oscillators Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm the presence of the standby function and exact frequency tolerance. Ensure the selected variant matches the required 1.8V supply voltage and LVCMOS output specifications for your circuit design. Cross-reference the part number with official Mercury Electronics catalogs to avoid confusion with similar models lacking power-down capabilities.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V oscillator with a dedicated power-down feature is required. The LVCMOS output ensures compatibility with standard digital logic families. Consider the 4-SMD package size for space-constrained PCB layouts. Verify that the 20.22977 MHz frequency aligns with system timing requirements before finalizing the design.

Oscillators Part Context

Mercury Electronic Ind. Co., Ltd. is a quartz crystal manufacturer established in 1973, recognized as the first in Taiwan to produce quartz crystals. The company specializes in frequency control products, including surface mount and through-hole components. This oscillator belongs to their line of precision timing solutions designed for modern electronic applications.

Oscillators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Mercury Electronics technical support or authorized distributors for direct equivalents or pin-compatible alternatives that meet the same electrical and mechanical specifications.