18QHTF21-7.3828-PD

Overview

The 18QHTF21-7.3828-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 7.3828 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications in a compact 4-SMD, No Lead package. It functions with a supply voltage of 1.8V and includes a standby or power-down feature to manage energy consumption during inactive periods.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode capability for power management
• Designed for surface mount assembly processes

Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper solder joint formation and mechanical stability.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS signaling levels. The choice is appropriate for space-constrained designs necessitating a small 4-SMD form factor. Consider the operating temperature range and frequency stability needs relative to the application environment to ensure reliable performance over the product lifecycle.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface mount crystal oscillators. The series offers various frequency options within a standardized package profile. The manufacturer specializes in quartz-based frequency control products, providing timing solutions for consumer and industrial electronics markets.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with compatible pinouts and electrical characteristics. Verify equivalent frequency stability and supply voltage ratings when considering alternative models from the same family.