18QHTF21-25.33125-PD

Oscillators Overview

The 18QHTF21-25.33125-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 25.33125 MHz and utilizes LVCMOS output logic. 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

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby (Power Down) functionality to reduce power consumption
• Designed with a 4-SMD, No Lead surface-mount package

Oscillators Applications

• General-purpose clock signal generation
• Embedded systems requiring low-power standby modes
• Digital circuits utilizing LVCMOS interfaces

Oscillators Procurement Notes

Verify the specific suffix 'PD' indicates the Standby (Power Down) feature rather than Enable/Disable when sourcing replacements. Confirm the operating voltage is strictly 1.8V to ensure compatibility with the target circuit design. Check the package dimensions against the PCB footprint to ensure the 4-SMD No Lead form factor fits correctly.

Oscillators Selection Notes

Select this component when a 25.33125 MHz clock source is required with active power-down capabilities. Ensure the system design supports 1.8V logic levels. Compare against other variants in the QHTF21 series if different frequencies or voltage levels are needed. Verify that the LVCMOS output swing meets the input requirements of the downstream components.

Oscillators Part Context

This part belongs to the Mercury Electronics QHTF21 series of surface-mount crystal oscillators. The series typically offers various frequencies and voltage options. The '18' prefix generally denotes the 1.8V supply voltage variant, while 'PD' specifies the power-down control type. This distinguishes it from non-controlled or enable-only variants within the same family.

Oscillators Replacement Considerations

Direct substitutes must match the 25.33125 MHz frequency, 1.8V supply, LVCMOS output, and Standby control. Other Mercury parts like 18QHTF21-25.003125-PD share the package and control but differ in frequency. Cross-manufacturer replacements require verifying pinout and electrical characteristics.