18QHTF21-25.145-OE

Oscillators Overview

The 18QHTF21-25.145-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 25.145 MHz and utilizes LVCMOS output logic levels. The device is designed for low voltage applications, functioning at 1.8V. It features an enable/disable control pin for power management flexibility. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, suitable for surface-mount assembly processes.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated enable/disable functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Digital signal processing circuits
• Communication equipment clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Oscillators Selection Notes

Select this component when a precise 25.145 MHz clock signal is required in space-constrained designs. The 1.8V operation makes it suitable for battery-powered or low-voltage logic systems. Consider the enable feature if dynamic power saving is necessary. Verify that the LVCMOS output swing is compatible with the input thresholds of the receiving logic gates in your application.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small form factor quartz oscillators. The series typically offers standard frequencies with LVCMOS outputs. Similar models in the lineup include variants with different frequencies such as 25.147 MHz or 37.888 MHz, maintaining the same package and voltage characteristics for consistent design integration across product lines.

Oscillators Replacement Considerations

Direct substitutes may include other 1.8V LVCMOS oscillators in 4-SMD packages with identical 25.145 MHz frequency. Verify pinout compatibility and electrical parameters such as rise/fall times and duty cycle. Alternative manufacturers should be evaluated based on frequency stability and phase noise specifications to ensure equivalent performance in timing-critical applications.