18QHTF21-49.400-OE

Overview

The 18QHTF21-49.400-OE is a standard LVCMOS crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.4 MHz and utilizes a 1.8V supply voltage. The device features enable and disable control functionality for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Feature Summary

• Generates a precise 49.4 MHz clock signal using LVCMOS output levels
• Operates on a single 1.8V power supply rail
• Includes hardware enable and disable pins for dynamic power control

Applications

• High-frequency timing circuits requiring stable clock sources
• Digital systems utilizing LVCMOS logic interfaces
• Portable electronics benefiting from low-voltage operation

Procurement Notes

Verify the specific electrical characteristics and pin configuration against the official manufacturer datasheet before integration. Confirm that the 1.8V supply requirement aligns with your system design. Ensure the 4-SMD package footprint matches your PCB layout constraints to guarantee proper assembly and electrical connectivity.

Selection Notes

Select this component when a 49.4 MHz frequency is required within a low-voltage 1.8V environment. The LVCMOS output is compatible with standard digital logic families. Consider the enable/disable feature if power efficiency during idle states is a priority for the target application design.

Part Context

This part belongs to the Mercury Electronics XO series, designed for general-purpose timing applications. The manufacturer specializes in quartz crystals and oscillators, providing reliable frequency control solutions. This specific model represents a surface-mount option for modern electronic assemblies.

Replacement Considerations

No public substitute part numbers are confirmed in the provided documentation. Verify compatibility carefully if sourcing alternatives, as frequency, voltage, and package dimensions must match exactly.