18QHTF21-116.444444-PD

Overview

The 18QHTF21-116.444444-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 116.444444 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down standby function. 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 power-down standby capability
• Provides LVCMOS output signal

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 116.444444 MHz reference is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage and power-down feature for energy-efficient designs. Evaluate the small 2.0x1.6mm footprint against available board space. Compare performance against other Mercury oscillators if different frequencies or package sizes are needed.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various standard frequencies and supports LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down control pin for standby management. These components are designed for high-reliability applications requiring stable clock signals in compact electronic devices.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical 1.8V LVCMOS specifications and 4-SMD packages, such as the 18QHTF21-116.4444-PD if minor frequency rounding is acceptable. Verify pinout compatibility and thermal characteristics when cross-referencing with similar models from Mercury Electronics.