18QHTF21-121.775-OE

Overview

The 18QHTF21-121.775-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 121.775 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates enable/disable functionality for power management
• Utilizes a leadless SMD package for automated assembly

Applications

• Digital signal processing systems
• Communication equipment timing circuits
• Embedded system clock generation

Procurement Notes

Verify the specific ordering suffix to ensure the correct frequency and package variant. Confirm that the 1.8V supply requirement aligns with the target circuit design. Check for RoHS compliance status if environmental regulations apply to the manufacturing process.

Selection Notes

Select this component when a 121.775 MHz clock source is required with low-voltage operation. Ensure the PCB layout supports the 4-SMD no-lead footprint dimensions. Consider thermal dissipation requirements associated with the small form factor during high-duty cycle operations.

Part Context

This part belongs to the 18QHTF21 series of quartz oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized envelope. Mercury Electronic is a recognized manufacturer of frequency control products with extensive experience in quartz crystal technologies.

Replacement Considerations

The 18QHTF21-121.775-PD is a documented alternative variant from the same manufacturer. Verify pinout compatibility and electrical specifications before substitution.