18QHTF21-122.000-OE

Overview

The 18QHTF21-122.000-OE is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 122.000 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an Enable/Disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.5mm x 2.0mm. This component is designed for standard clock signal generation applications requiring precise timing.

Feature Summary

• Provides stable 122.000 MHz clock signals using LVCMOS logic
• Features low-profile 4-SMD surface mount packaging
• Supports power management via dedicated Enable/Disable pin

Applications

• General purpose digital system clocking
• Embedded controller timing references
• Communication interface synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Cross-reference the OE suffix to confirm availability of the Enable/Disable feature in your specific revision.

Selection Notes

Select this model when a 122.000 MHz frequency is required with LVCMOS compatibility. Consider the 1.8V operating voltage for low-power designs. The small 2.5x2.0mm package is suitable for space-constrained boards. Evaluate thermal performance if high duty cycle operation is expected. Compare against other Mercury frequencies if exact timing is not critical.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies within the same physical footprint. The 'OE' designation indicates the inclusion of an output enable function. These components are commonly used in consumer electronics and industrial equipment requiring reliable clock sources.

Replacement Considerations

Direct substitutes include other 122.000 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as jitter and phase noise. Check if alternative manufacturers offer equivalent timing performance. Ensure the replacement supports the Enable/Disable functionality if required by the design.