18QHTF21-75.695-OE

Overview

The 18QHTF21-75.695-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 75.695 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Standard XO configuration with LVCMOS output
• Integrated enable/disable control
• Compact 4-SMD no-lead package

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded system clock generation

Procurement Notes

Verify the exact frequency specification against official datasheets, as similar part numbers may vary slightly (e.g., 75.630 MHz). Confirm supply voltage requirements match the target circuit design. Ensure the enable/disable pinout aligns with system control logic. Check package dimensions for PCB footprint compatibility.

Selection Notes

Select this component when a 1.8V supply and LVCMOS interface are required. Consider the enable/disable feature for power-sensitive designs. Verify the 4-SMD package fits the assembly constraints. Compare against other Mercury series oscillators if different frequencies or voltages are needed.

Part Context

This part belongs to the QHTF21 series from Mercury Electronics, a Taiwan-based manufacturer established in 1973. The series specializes in quartz crystals and oscillators. The '18' prefix typically indicates the 1.8V supply voltage variant within their product line.

Replacement Considerations

Direct substitutes include the 18QHTF21-75.630-OE, though the frequency differs. Cross-reference with other Mercury 1.8V LVCMOS oscillators in the same package family if frequency tolerance allows.