18QHTF21-49.4033-OE

Overview

The 18QHTF21-49.4033-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 49.4033 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features integrated enable/disable control functionality
• Utilizes a leadless SMD package for automated assembly

Applications

• General purpose clock signal generation
• Digital circuit timing synchronization
• Embedded system clock sources

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 soldering defects during assembly.

Selection Notes

Select this component when a fixed frequency of 49.4033 MHz is required with low power consumption. The LVCMOS output is suitable for standard digital logic families. Consider the enable pin feature if power management or clock gating is necessary within the application design constraints.

Part Context

Mercury Electronic Ind. Co., Ltd. is a Taiwan-based manufacturer specializing in quartz crystals and oscillators. This part belongs to their line of standard XO (Crystal Oscillator) components, which are widely used in consumer electronics and industrial equipment for stable frequency reference.

Replacement Considerations

Direct substitutes include other 49.4033 MHz LVCMOS oscillators in compatible packages from manufacturers such as Epson, Nihon Dempa Kogyo, or SiTime, provided electrical parameters match.