18QHTF21-75.665-OE

Overview

The 18QHTF21-75.665-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 75.665 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features an enable/disable control pin for power management flexibility. It is housed in a compact 4-SMD, no lead package, designed for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports active low or high enable/disable functionality for power optimization
• Delivers standard LVCMOS square wave output signals
• Utilizes a small footprint 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation in digital circuits
• Timing reference sources for microprocessors and microcontrollers
• Data communication interface synchronization modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD no-lead package dimensions match your PCB footprint to guarantee proper soldering and mechanical stability during operation.

Selection Notes

Choose this component when a precise 75.665 MHz timing source is required with low power consumption capabilities. The integrated enable pin makes it suitable for battery-operated devices requiring sleep modes. Consider the LVCMOS output swing compatibility with downstream logic gates to ensure signal integrity without additional buffering stages.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in producing crystals and oscillators. This specific model represents a standard XO variant optimized for modern low-voltage digital applications requiring reliable clock performance.

Replacement Considerations

Direct substitutes must match the 75.665 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as phase noise and jitter specifications to maintain system timing accuracy. Check pinout compatibility to ensure seamless integration into existing designs.