18QHTF21-123.000-OE

Overview

The 18QHTF21-123.000-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 123.0 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 suitable for surface mount applications.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Includes hardware enable and disable functionality for power management
• Utilizes a leadless SMD package design for automated assembly

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing high-frequency data transmission
• Embedded systems with low-voltage logic requirements

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout to prevent soldering defects during assembly.

Selection Notes

Select this component when a 123.0 MHz clock source is required with LVCMOS signaling levels. Consider the 1.8V operating voltage constraint for compatibility with modern low-power digital circuits. Evaluate the enable/disable pin utility for dynamic power saving strategies in battery-operated or energy-efficient designs.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-voltage CMOS oscillators. The series typically offers standard frequencies with reliable enable/disable features. Mercury Electronic has been manufacturing frequency control products since 1973, specializing in quartz crystals and oscillators.

Replacement Considerations

Compatible alternatives include other 123.0 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify electrical parameters such as phase noise and jitter specifications match the original requirements. Ensure the physical dimensions and pinout configuration are identical for direct board replacement.