18QHTF21-31.800-PD

Oscillators Overview

The 18QHTF21-31.800-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 31.8 MHz and utilizes LVCMOS output logic levels. The device requires a 1.8V supply voltage and features a power-down standby function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Oscillators Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated power-down standby mode for reduced consumption
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Portable consumer electronics
• Battery-powered devices
• General purpose timing circuits

Oscillators Procurement Notes

Verify the specific frequency suffix (31.800) matches the design requirement. Confirm the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout. Check for any specific temperature range requirements if operating in extreme environments.

Oscillators Selection Notes

Select this model when a 31.8 MHz clock signal is required with low voltage operation. The LVCMOS output ensures direct interfacing with standard digital components. The power-down feature makes it suitable for applications requiring active and inactive states. Consider the small form factor for dense board layouts.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within the same physical package. The series provides standardized timing solutions with consistent electrical characteristics across different frequency options. The 'PD' suffix indicates the inclusion of a power-down control pin.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical package and voltage but different frequencies, such as 18QHTF21-31.200-PD or 18QHTF21-8.000-PD, provided the frequency difference is acceptable for the application.