18QHTF21-2.250-PD

Oscillators Overview

The 18QHTF21-2.250-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 2.25 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, specifically requiring a 1.8V supply voltage. It features a standby or power-down function to manage energy consumption when not in active use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode functionality for power management
• Designed for low voltage operation at 1.8V

Oscillators Applications

• General clock signal generation in electronic circuits
• Low voltage digital system timing references
• Portable devices requiring power-efficient oscillators

Oscillators Procurement Notes

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

Oscillators Selection Notes

Select this component when a stable 2.25 MHz clock source is required within a low-voltage 1.8V system architecture. The LVCMOS output ensures direct interfacing with compatible digital logic families without additional level shifting. Consider the small 2.0x1.6 mm form factor if space constraints are critical. The standby feature makes it suitable for battery-operated applications where power conservation during idle periods is necessary.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized surface-mount package. The series is characterized by its low voltage operation and compact size, targeting modern miniaturized electronics. The 'PD' suffix typically indicates the presence of a power-down pin or function, distinguishing it from non-standby variants within the same family.

Oscillators Replacement Considerations

Direct substitutes may include other 2.25 MHz LVCMOS oscillators in a 2.0x1.6mm SMD package from different manufacturers, provided they match the 1.8V supply and pinout configuration. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in timing-critical applications.