18QHTF21-74.176-OE

Overview

The 18QHTF21-74.176-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 74.176 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes enable/disable functionality. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable and disable control capability
• Compact 4-SMD no lead surface mount package design

Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check the datasheet for operating temperature range specifications to guarantee reliability under your environmental conditions.

Selection Notes

Select this component when a precise 74.176 MHz clock source is required with low-profile packaging. Consider the LVCMOS output swing limits for your downstream logic inputs. Evaluate the enable pin utility for power management strategies in battery-operated devices. Compare size constraints against alternative packages if space is limited.

Part Context

This part belongs to Mercury Electronics' standard XO series, designed for general-purpose timing applications. The 18QHTF21 prefix indicates a specific form factor and electrical characteristic set within their SMD oscillator lineup. It complements other models like the 76.000-OE variant which shares similar physical dimensions but differs in frequency.

Replacement Considerations

Direct substitutes include the 18QHTF21-76.000-OE for identical packaging with different frequency. Verify pinout compatibility when cross-referencing with other 4-SMD oscillators from different manufacturers. Ensure equivalent frequency stability and phase noise specifications are met if replacing with non-Mercury parts.