18QHTF21-1.544-OE

Overview

The 18QHTF21-1.544-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 1.544 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 3.2 x 2.5 mm surface-mount package without lead, suitable for space-constrained electronic applications requiring precise timing signals.

Feature Summary

• Integrates LVCMOS output logic for direct digital interface compatibility
• Includes hardware enable and disable functionality for power management
• Utilizes a lead-free surface-mount package for automated assembly

Applications

• Clock signal generation for communication interfaces
• Timing reference for embedded microcontroller systems
• Synchronization circuits in consumer electronics

Procurement Notes

Verify the specific ordering suffix to confirm the exact frequency tolerance and load capacitance requirements. Ensure the procurement channel provides official datasheets from Mercury Electronic Ind. Co., Ltd. to validate the 1.8V operating voltage and LVCMOS output characteristics against system design specifications.

Selection Notes

Select this component when a low-voltage 1.8V supply is required for clock generation. The 1.544 MHz frequency is appropriate for specific baud rate divisions or audio sampling applications. Consider the small 3.2x2.5 mm footprint for PCB layout constraints and verify that the enable pin can be utilized for power-saving modes in the target design.

Part Context

This part belongs to the 18QHTF series of standard XO oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies and voltages, with the 18QHTF21 variant specifically denoting the 1.8V supply and 3.2x2.5 mm package dimensions within the manufacturer's product line.

Replacement Considerations

Direct substitutes include other 1.544 MHz LVCMOS oscillators in 3.2x2.5 mm packages from manufacturers such as Epson or SiTime, provided they match the 1.8V supply and pinout configuration.