18QHTF21-75.380-PD

Overview

The 18QHTF21-75.380-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.38 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and including a standby or power-down function to reduce energy consumption during idle periods. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Integrates LVCMOS output interface for digital logic compatibility
• Supports standby mode with power-down capability for energy efficiency
• Utilizes a leadless SMD package for automated surface-mount processing

Applications

• Digital signal processing circuits requiring precise clock references
• Communication systems utilizing standard logic level interfaces
• Portable electronic devices necessitating low-power operation modes

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply rail stability meets the oscillator's jitter specifications. Ensure the PCB layout supports the 4-SMD no-lead footprint dimensions to guarantee reliable solder joint formation and thermal performance during reflow processes.

Selection Notes

Select this component when a 75.38 MHz reference is required with LVCMOS outputs. Consider the 1.8V supply constraint and standby functionality for power-sensitive designs. Evaluate the 4-SMD package size against available board space. Compare alternative frequencies within the same series if the exact 75.38 MHz value is not strictly necessary for the target application timing constraints.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of standard oscillators. The series typically offers various frequencies with consistent LVCMOS outputs and low-voltage operation. The 'PD' suffix indicates the inclusion of a power-down pin or feature. This family targets general-purpose timing needs in consumer and industrial electronics where moderate precision and low cost are prioritized over ultra-low phase noise.

Replacement Considerations

Direct substitutes include other 75.38 MHz LVCMOS oscillators in 4-SMD packages from Mercury Electronics, such as the 18QHTF21-75.675-PD for similar form factors. Verify pinout compatibility and electrical parameters before swapping.