18QHTF21-4.433618-PD

Oscillators Overview

The 18QHTF21-4.433618-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 4.433618 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby power-down function for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

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

Oscillators Applications

• General clock signal generation
• Embedded system timing references
• Consumer electronics circuitry

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet to ensure reliable oscillator performance and longevity.

Oscillators Selection Notes

Select this component when a precise 4.433618 MHz reference is required in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital circuits. Ensure the PCB layout accommodates the small 2.0x1.6mm footprint and provides adequate thermal management for the SMD package.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various standard frequencies in a standardized small outline package, providing designers with consistent form factors for different timing needs across multiple product lines.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with compatible frequencies if the exact 4.433618 MHz is not critical. Verify pin compatibility and electrical specifications before swapping with generic XO components.