18QHTF21-49.500-PD

Overview

The 18QHTF21-49.500-PD is a 49.5 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The component features a Standby function for power down control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for standard digital interface compatibility
• Includes Standby mode functionality to enable power down capabilities

Applications

• General clock signal generation in electronic circuits
• Low-voltage digital system timing applications

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD No Lead package footprint matches your PCB layout constraints. Check for any specific RoHS or environmental compliance certifications required for your project.

Selection Notes

Select this component when a precise 49.5 MHz clock source is required for low-power applications. The 1.8V operating voltage makes it suitable for modern portable devices. Consider the small 2.0x1.6mm form factor if space is limited on the board. Verify that LVCMOS output levels are compatible with the receiving logic inputs.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in Taiwan's quartz industry. This series typically offers standard XO configurations with various frequency options within a compact surface-mount package.

Replacement Considerations

Direct substitutes may include other 49.5 MHz LVCMOS oscillators in a 4-SMD No Lead package with 1.8V operation. Ensure pinout compatibility and identical electrical specifications such as output swing and standby functionality.