18QHTF21-75.295-PD

Overview

The 18QHTF21-75.295-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.295 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, designed for surface-mount applications. This component serves as a precise clock source for digital circuits requiring stable frequency generation within the specified operating temperature range.

Feature Summary

• Provides stable LVCMOS clock signal output
• Integrates standby and power-down functionality
• Utilizes leadless SMD package design

Applications

• Digital system clock generation
• Embedded controller timing sources
• Communication interface synchronization

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your circuit design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this model when a specific 75.295 MHz frequency is required for LVCMOS-compatible logic families. Consider the low-profile 4-SMD package for space-constrained designs. Evaluate the power consumption implications of the active mode versus the standby state if battery life or thermal management is critical. Ensure the operating temperature range meets the environmental conditions of the final application.

Part Context

This part belongs to the Mercury Electronics 18QHTF series of quartz crystal oscillators. The series typically offers various frequencies and voltage options within similar small form factors. Mercury Electronics is a recognized manufacturer of frequency control products, including crystals and oscillators, with a long history in the industry. This specific model represents a standard XO variant optimized for general-purpose digital timing applications.

Replacement Considerations

Direct replacements must match the 75.295 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as rise/fall times and duty cycle. Cross-reference with other manufacturers' equivalent parts ensuring identical functional parameters to avoid circuit redesign.