18QHTF21-124.400-PD

Overview

The 18QHTF21-124.400-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 124.4 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode capability
• Utilizes LVCMOS output interface

Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system synchronization

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application design before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD package footprint matches the PCB layout constraints. Check for any specific RoHS compliance documentation if required by regional regulations.

Selection Notes

Select this component when a precise 124.4 MHz clock source is required for LVCMOS-compatible digital circuits. The choice is driven by the need for a low-profile surface-mount solution with integrated power-down functionality. Consider the operating temperature range and stability requirements to ensure compatibility with the intended environmental conditions.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm SMD package. These components are designed for applications requiring reliable clock signals in space-constrained electronic devices, leveraging Mercury's expertise in quartz crystal manufacturing.

Replacement Considerations

Direct substitutes include other 124.4 MHz LVCMOS oscillators in the same 4-SMD package with compatible 1.8V operation. Verify pinout compatibility and electrical specifications before swapping. Cross-reference with similar models from Mercury Electronics or other manufacturers offering identical form factors and performance characteristics.