18QHTF21-49.4933-OE

Overview

The Mercury Electronics 18QHTF21-49.4933-OE is a standard frequency crystal oscillator (XO) operating at 49.4933 MHz. It utilizes LVCMOS output logic and features an enable/disable control function powered by a 1.8V supply voltage. The component is housed in a compact 4-SMD, no-lead package designed for surface-mount applications.

Feature Summary

• Integrates enable/disable functionality for power management
• Provides stable LVCMOS signal output
• Utilizes hermetic ceramic leadless SMD construction

Applications

• Digital clock distribution networks
• Data communication interface timing
• Embedded system clock sources

Procurement Notes

Verify the specific supply voltage requirement of 1.8V against the target circuit design to ensure compatibility. Confirm that the LVCMOS output voltage levels align with the receiving device's input thresholds. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions specified in the official datasheet to prevent assembly errors.

Selection Notes

Select this component when a precise 49.4933 MHz reference is required with low power consumption due to the 1.8V operation. The enable pin allows for dynamic power control in battery-operated devices. Consider the small form factor of the no-lead package for space-constrained layouts compared to larger through-hole alternatives.

Part Context

This model belongs to the QHTF series from Mercury Electronic, which specializes in high-reliability frequency control products. The series offers various frequencies ranging from 1.0 MHz to 200 MHz across different supply voltages. The manufacturer is a established supplier of quartz crystals and oscillators based in Taiwan.

Replacement Considerations

Direct replacements must match the 49.4933 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify equivalent enable/disable functionality and electrical characteristics before substitution.