18QHTF21-1.820-PD

Overview

The 18QHTF21-1.820-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 1.820 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Feature Summary

• Supports low voltage operation with 1.8V supply
• Includes standby function for power management
• Utilizes LVCMOS output logic for digital interfacing

Applications

• Battery-powered portable devices
• Low power consumer electronics
• Digital clock signal generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure that the 4-SMD no-lead package dimensions align with the PCB footprint specifications. Confirm that the operating temperature range meets the environmental conditions of the intended application environment.

Selection Notes

Select this component when a precise 1.820 MHz clock signal is required for low-power systems. The 1.8V supply requirement makes it suitable for modern low-voltage digital circuits. Consider the standby feature if power efficiency during idle states is a critical design parameter for the system architecture.

Part Context

This part belongs to the 18QHTF21 series of oscillators from Mercury Electronics. The series offers various frequencies and packages. This specific model provides a low-frequency option optimized for battery life. It complements higher frequency variants within the same product family.

Replacement Considerations

Direct substitutes include other 1.820 MHz LVCMOS oscillators in 4-SMD packages with compatible 1.8V supply voltages. Verify pinout compatibility and electrical parameters such as current consumption and phase noise before substitution.