18QHTF21-27.5875-PD

Oscillators Overview

The 18QHTF21-27.5875-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 27.5875 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount assembly.

Oscillators Feature Summary

• LVCMOS output interface
• Integrated standby mode
• Surface-mount SMD package

Oscillators Applications

• General timing clock generation
• Digital signal processing circuits
• Embedded system clocks

Oscillators Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with your system design requirements. Ensure the 4-SMD footprint matches your PCB layout constraints to avoid assembly issues.

Oscillators Selection Notes

Select this component when a precise 27.5875 MHz reference is required for low-voltage digital applications. Consider the LVCMOS compatibility with downstream logic gates. Evaluate the need for standby functionality if power conservation is a priority in the target application environment.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard XO oscillators from Mercury Electronics. The series typically offers various frequencies within the same form factor. The '-PD' suffix likely indicates the inclusion of a power-down feature, distinguishing it from basic continuous-operation variants.

Oscillators Replacement Considerations

Direct substitutes must match the 27.5875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify pinout compatibility and electrical specifications such as load capacitance and drive strength before cross-referencing other manufacturers.