18QHTF21-18.660-OE

Oscillators Overview

The 18QHTF21-18.660-OE is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.66 MHz and utilizes LVCMOS output levels. The device supports a supply voltage of 1.8V and includes an enable/disable function for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. The component offers a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to 85°C. Maximum supply current is specified at 24mA.

Oscillators Feature Summary

• Integrated enable/disable control for efficient power management
• Compact surface-mount design suitable for space-constrained applications
• LVCMOS output compatibility for standard digital interfaces

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication modules utilizing standard clock signals
• Embedded systems needing precise timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance 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 4-SMD package footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards. Validate the operating temperature range against your environmental conditions.

Oscillators Selection Notes

Select this component when a small form factor and low voltage operation are critical. The LVCMOS output simplifies interface design with microcontrollers and FPGAs. Consider the ±50ppm stability for applications where moderate precision is sufficient. The enable pin allows for dynamic power saving strategies in battery-operated equipment. Compare against other Mercury oscillators if different frequencies or packages are needed.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, known for quartz crystal products. The series typically features SMD packaging and LVCMOS outputs. Mercury Electronics has a long history in Taiwan's crystal industry. This specific model represents a standard XO variant optimized for modern portable electronics.

Oscillators Replacement Considerations

Direct substitutes may include other 18.66 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify electrical parameters such as supply voltage, current draw, and stability match exactly. Check pinout compatibility to ensure seamless integration without PCB redesign.