18QHTF21-75.250-PD

Overview

The 18QHTF21-75.250-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.25 MHz and utilizes LVCMOS output logic. 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 applications.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby and power-down functionality to reduce power consumption
• Designed as a standard crystal oscillator with fixed frequency operation

Applications

• General clock signal generation in electronic circuits
• Digital systems requiring precise timing references
• Embedded devices utilizing low-voltage logic interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no-lead package dimensions fit within your PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a stable 75.25 MHz clock source is required with low-power capabilities. The LVCMOS output ensures compatibility with standard digital logic families operating at 1.8V. Consider the standby feature if power efficiency is critical during idle periods. Verify that the operating temperature range meets your application's environmental conditions.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options in small form factors. Mercury Electronics has a history of manufacturing quartz crystals and frequency control products since 1973, positioning itself as a pioneer in Taiwan's crystal industry.

Replacement Considerations

Direct substitutes include other models from the same QHTF series with matching frequency and voltage, such as 18QHTF21-51.200-PD or 18QHTF21-75.385-PD, provided the frequency difference is acceptable. Cross-brand replacements require matching LVCMOS output, 1.8V supply, and 4-SMD package dimensions.