18QHTF21-1.840-PD

Overview

The 18QHTF21-1.840-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.84 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 with dimensions of 3.2x2.5 mm.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby capability for power management
• Utilizes LVCMOS output interface

Applications

• Battery-powered portable devices
• General electronic circuits requiring precise timing
• Embedded systems with space constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits defined in the official datasheet. Ensure the 4-SMD package footprint matches your PCB layout to avoid assembly issues.

Selection Notes

Select this component when a 1.84 MHz clock signal is required with minimal power consumption. The 1.8V operating voltage makes it suitable for modern low-power digital logic families. Consider the small form factor if board space is limited, and ensure compatibility with LVCMOS input stages of the receiving components.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies tailored for consumer electronics and industrial applications. The 'PD' suffix typically indicates specific packaging or handling characteristics consistent with the manufacturer's standard product line definitions.

Replacement Considerations

Direct substitutes include other 1.84 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and electrical specifications such as supply current and output swing before substitution.