18QHTF21-44.9454-PD

Oscillators Overview

The 18QHTF21-44.9454-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 44.9454 MHz with LVCMOS output logic. The device requires a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

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

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the datasheet specifications to maintain oscillation integrity. Confirm that the PCB footprint matches the 4-SMD no lead package dimensions for proper assembly.

Oscillators Selection Notes

Select this component when a precise 44.9454 MHz reference is required in space-constrained designs. The choice is driven by the need for low voltage compatibility and active power management via the standby pin. Consider the small form factor as a primary advantage for dense board layouts.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in miniature crystal oscillators. The series offers various frequencies within a standardized 2.0x1.6 mm package. It is designed for applications demanding reliable timing sources with minimal power draw and physical footprint.

Oscillators Replacement Considerations

Direct substitutes must match the 44.9454 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics before swapping manufacturers.