18QHTF21-75.500-OE

Overview

The 18QHTF21-75.500-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 75.5 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for surface-mount assembly.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a small form factor 4-SMD no-lead package

Applications

• General clock signal generation in embedded systems
• Timing reference for low-voltage digital circuits
• Consumer electronics requiring compact oscillators

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Ensure the 1.8V supply voltage aligns with the target system design. Confirm that the enable/disable pin configuration matches the host controller's GPIO capabilities. Check for any specific operating temperature range limitations defined in the manufacturer's documentation.

Selection Notes

Select this component when a 75.5 MHz clock source is required within a 2.0x1.6mm footprint. The 1.8V supply requirement makes it suitable for modern low-power portable devices. Consider the LVCMOS output swing if interfacing with high-speed logic families. The enable feature allows for dynamic power saving strategies in battery-operated applications.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-voltage crystal oscillators. The series typically offers various frequencies and packages. The 'OE' suffix likely denotes a specific ordering or packaging variant, though functional differences are not explicitly detailed in public summaries. It competes with other SMD oscillators in the same size class.

Replacement Considerations

Direct substitutes include the 18QHTF21-75.550-OE and 18QHTF21-50.256-OE if different frequencies are acceptable. The 25QHTF21-75.500-OE is a similar model but operates at 2.5V, requiring voltage level adjustment. Verify pinout and electrical characteristics before swapping.