18QHTF21-74.176-PD

Overview

The 18QHTF21-74.176-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 74.176 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly.

Feature Summary

• LVCMOS output interface
• Standby power-down capability
• Compact 4-SMD no-lead package

Applications

• General clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required for your region.

Selection Notes

Select this component when a precise 74.176 MHz clock source is needed with low-voltage operation. Consider the LVCMOS compatibility with your receiving logic gates. Evaluate the thermal performance and stability requirements of your application to ensure the standard XO meets long-term reliability needs.

Part Context

Mercury Electronic Ind. Co., Ltd. is a manufacturer of frequency control products, including quartz crystals and oscillators. The company has a history of producing quartz-based components since 1973. This part belongs to their series of surface-mount crystal oscillators designed for various electronic applications requiring stable clock signals.

Replacement Considerations

Direct substitutes may include other 74.176 MHz LVCMOS oscillators in a 4-SMD package from different manufacturers. Verify pinout compatibility and electrical parameters such as supply voltage and output swing before swapping.