18QHTF21-2.488-PD

Oscillators Overview

The 18QHTF21-2.488-PD is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 2.488 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby mode for power-down functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly.

Oscillators Feature Summary

• Integrates a standby function to reduce power consumption during inactive periods
• Utilizes LVCMOS output interface for standard digital logic compatibility
• Designed for low-voltage operation at 1.8V to support power-sensitive circuits

Oscillators Applications

• Power-sensitive electronic designs requiring low current draw
• Embedded systems utilizing LVCMOS logic interfaces
• Compact consumer electronics requiring small form-factor oscillators

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD No Lead package footprint matches the PCB layout specifications. Check for any specific operating temperature range limitations defined in the official datasheet for the intended application environment.

Oscillators Selection Notes

Select this component when a low-frequency, low-voltage oscillator with standby capabilities is required. The 1.8V operation makes it suitable for battery-powered or energy-efficient devices. The small 2.0x1.6 mm package allows for high-density board layouts. Consider the LVCMOS output type for direct interfacing with standard digital components without additional level shifting.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd., which focuses on miniature crystal oscillators. The series typically offers various frequencies and voltage options within a standardized 4-SMD footprint. The 'PD' suffix indicates the inclusion of a power-down feature, distinguishing it from standard continuous-operation models in the same package family.

Oscillators Replacement Considerations

Direct substitutes must match the 2.488 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if specified. Alternative parts from other manufacturers require careful validation of mechanical dimensions and thermal performance.