18QHTF21-28.375-PD

Oscillators Overview

The 18QHTF21-28.375-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 28.375 MHz with an LVCMOS output logic type. The device requires a supply voltage of 1.8V and features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital circuit compatibility
• Standby mode support for power reduction
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet to guarantee reliability under environmental conditions.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output interface. The inclusion of a standby feature makes it suitable for battery-powered or energy-efficient designs. The small 4-pin SMD form factor is ideal for space-constrained layouts. Compare against other models in the 18QHTF21 series if different frequencies or voltage levels are needed.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The 'PD' suffix indicates the presence of a Power Down pin, distinguishing it from versions without standby functionality. These oscillators are designed for general electronic applications requiring stable clock signals.

Oscillators Replacement Considerations

Direct substitutes within the same series include 18QHTF21-28.375-OE, which offers Enable/Disable control instead of Standby. Other frequencies in the 18QHTF21 series may be used if the system clock requirement differs. Verify pinout compatibility and electrical characteristics before substituting.