18QHTF21-115.500-OE

Overview

The 18QHTF21-115.500-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 115.5 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• LVCMOS output logic for standard digital interfacing
• Integrated enable/disable control functionality
• Compact surface-mount package design

Applications

• General purpose clock signal generation
• Digital system timing reference
• Low-voltage electronic circuits

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6mm footprint matches your PCB layout constraints. Cross-reference the datasheet for start-up time specifications to ensure compatibility with your system initialization sequence.

Selection Notes

Select this component when a 115.5 MHz clock source is required with LVCMOS compatibility. The 1.8V operation makes it suitable for modern low-power digital designs. Consider the small form factor if space is limited on the PCB. Verify that the enable pin can be effectively utilized for power saving modes in your application architecture.

Part Context

This part belongs to the 18QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The 'OE' suffix often denotes specific packaging or tape-and-reel options, though verification is needed. It is distinct from higher voltage variants like the 2.5V or 3.3V versions in the same family.

Replacement Considerations

Direct substitutes may include other 115.5 MHz LVCMOS oscillators in 2.0x1.6mm packages from different manufacturers. Ensure equivalent electrical parameters such as supply voltage, output type, and frequency stability are matched. Check for pin-out compatibility if the replacement has a different manufacturer marking scheme.