18QHTF21-49.3467-OE

Overview

The 18QHTF21-49.3467-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.3467 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, featuring a supply voltage of 1.8V. It includes an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated enable/disable pin for power management
• Low voltage operation at 1.8V supply
• Surface-mount 4-pin no-lead package design

Applications

• General purpose timing circuits
• Embedded system clock sources
• Digital signal processing interfaces
• Communication module synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application datasheet before ordering. 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 provided in the official mechanical drawing. Check for any specific reflow soldering profile recommendations from the manufacturer to ensure joint integrity.

Selection Notes

Select this component when a precise 49.3467 MHz clock signal is required for LVCMOS-compatible digital circuits. The integrated enable feature makes it suitable for battery-powered or power-sensitive designs where dynamic power control is necessary. Consider the 1.8V operating voltage to ensure compatibility with modern low-voltage microcontrollers and FPGAs. The small form factor supports high-density board layouts.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which focuses on quartz-based timing solutions. The brand specializes in frequency control products including crystals and oscillators. This specific model represents a standard frequency option within their portfolio, targeting applications requiring reliable clock generation without the complexity of temperature-compensated variants.

Replacement Considerations

Direct substitutes must match the 49.3467 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD No Lead package. Verify pinout compatibility and electrical characteristics such as current consumption and drive strength. Cross-reference with other manufacturers offering similar low-voltage XO components if availability is constrained.