18QHTF21-121.250-OE

Overview

The 18QHTF21-121.250-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 121.25 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and features an active-low enable/disable control pin for power management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Integrates LVCMOS output logic for direct interfacing with digital circuits
• Includes an enable/disable function to manage power consumption
• Utilizes a small form factor SMD package for surface mount assembly

Applications

• Consumer electronics requiring precise clock generation
• Industrial control systems needing stable timing references
• Communication equipment utilizing LVCMOS interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6 mm package dimensions. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable joint formation during assembly processes.

Selection Notes

Select this oscillator when a 121.25 MHz clock signal is required with low-voltage operation. Consider the enable feature if power efficiency is critical for the application. Evaluate the size constraints to ensure the 2.0x1.6 mm package fits within the available board space. Compare performance metrics such as phase noise and stability against other available options to meet system timing specifications.

Part Context

This part belongs to the 18QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The 'OE' suffix may indicate specific packaging or testing configurations. Similar parts in the lineup include different frequencies like 21.2 MHz or 37.3 MHz, maintaining the same package and electrical characteristics.

Replacement Considerations

Direct substitutes must match the 121.25 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify compatibility with enable/disable functionality. Cross-reference with Mercury Electronics part numbers offering identical electrical parameters and mechanical dimensions to ensure seamless integration without redesign.