18QHTF21-75.316667-PD

Overview

The 18QHTF21-75.316667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.316667 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and an integrated standby or power-down function to minimize energy consumption when inactive. It is housed in a compact 4-SMD, no-lead surface-mount package, suitable for space-constrained electronic designs requiring precise clock signals.

Feature Summary

• LVCMOS output interface for standard digital logic compatibility
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount package

Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for digital circuits requiring 1.8V operation
• Portable electronics with power-sensitive design requirements

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's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Request the official datasheet from Mercury Electronics for detailed electrical specifications and reliability data prior to finalizing procurement decisions.

Selection Notes

Select this component when a stable 75.316667 MHz clock source is required for 1.8V logic families. Consider the LVCMOS output swing limits to ensure compatibility with downstream inputs. Evaluate the need for the standby feature if power conservation is critical. Compare package dimensions against available board space. Verify operating temperature range suitability for the intended environment.

Part Context

This part belongs to the 18QHTF21 series of quartz crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized small outline package format. These components are designed for high-frequency stability and are commonly used in telecommunications, computing, and consumer electronics where reliable timing is essential.

Replacement Considerations

Direct substitutes must match the 75.316667 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers' equivalent XO series ensuring identical electrical parameters and mechanical dimensions to maintain PCB integrity.