18QHTF21-122.040-OE

Overview

The 18QHTF21-122.040-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 122.04 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component supports an operating temperature range of -40°C to 85°C and maintains a frequency stability of ±50ppm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Features integrated enable and disable control functionality
• Designed for surface-mount assembly in space-constrained applications

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems with low-voltage power constraints

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 PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly errors during manufacturing.

Selection Notes

Select this component when a 122.04 MHz reference is required for LVCMOS-compatible circuits. Consider the ±50ppm stability specification relative to the system's jitter budget. Evaluate the 1.8V operating voltage against available power supplies and ensure the small form factor fits within the mechanical enclosure constraints.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies with consistent 1.8V operation and LVCMOS outputs. It serves as a timing source for digital logic families requiring stable clock signals in portable or industrial electronics.

Replacement Considerations

Direct substitutes include other 122.04 MHz LVCMOS oscillators in 4-SMD packages with compatible 1.8V supply voltages. Verify pinout compatibility and thermal characteristics when cross-referencing alternative manufacturers' components.