18QHTF21-49.4133-OE

Overview

The 18QHTF21-49.4133-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 49.4133 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General clock signal generation
• Digital system timing references
• Embedded controller synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly errors during manufacturing.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard CMOS output interface. The enable/disable feature makes it suitable for power-sensitive designs. Consider the small form factor if board space is limited. Validate that the operating temperature range meets the environmental conditions of the final application.

Part Context

This part belongs to the QuikXO series from Mercury Electronic, which focuses on fast-delivery CMOS output clock oscillators. The series includes both standard and custom frequency options. Mercury Electronic is a Taiwan-based manufacturer specializing in quartz crystals and timing components, established as a pioneer in the local industry since 1973.

Replacement Considerations

Direct substitutes include other 49.4133 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson or SiTime. Verify pinout compatibility and electrical specifications before substitution. Cross-reference with the 18QHTF21-50.191333-OE only if frequency adjustment is acceptable.