18QHTF21-122.800-PD

Overview

The 18QHTF21-122.800-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 122.8 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a power-down standby function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates power-down standby capability
• Provides LVCMOS signal output

Applications

• Digital clock generation
• Data communication interfaces
• Embedded system timing

Procurement Notes

Verify the specific part number suffix to ensure compatibility with required frequency and voltage specifications. Confirm that the 4-SMD no-lead package aligns with PCB footprint requirements. Check datasheet details for operating temperature ranges and load capacitance values before finalizing component selection.

Selection Notes

Select this component when a precise 122.8 MHz reference is needed for low-power applications. Ensure the design supports the 1.8V supply rail and accommodates the small 2.0x1.6 mm form factor. Verify that LVCMOS output levels match the input thresholds of the connected digital circuitry.

Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within a standardized 1.8V LVCMOS format. The PD suffix indicates the inclusion of a power-down control feature for energy management.

Replacement Considerations

Direct substitutes include other 122.8 MHz LVCMOS oscillators in 4-SMD packages with identical 1.8V requirements. Verify pinout compatibility and thermal characteristics before swapping manufacturers.