18QHTF21-44.3417-PD

Oscillators Overview

The 18QHTF21-44.3417-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 44.3417 MHz with a supply voltage of 3.3V. The device features LVCMOS output logic and includes a power-down (PD) control function. It is housed in a compact 2.0x1.6mm surface-mount package without leads, designed for space-constrained electronic applications requiring precise clock signals.

Oscillators Feature Summary

• Integrates power-down functionality for standby mode operation
• Utilizes LVCMOS output logic for standard digital interfacing
• Employs a leadless surface-mount package design

Oscillators Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Clock source for microcontroller or processor circuits

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application's datasheet specifications. Confirm that the 3.3V supply voltage aligns with the system power architecture. Ensure the 2.0x1.6mm footprint matches the PCB layout constraints. Cross-reference the part number suffix to confirm the exact frequency tolerance and stability grades required for the design.

Oscillators Selection Notes

Select this component when a low-profile, leadless oscillator is required for 3.3V logic systems. Consider the 44.3417 MHz frequency specifically for timing applications matching this rate. Evaluate the power-down feature if energy efficiency during idle states is a priority. Compare physical dimensions against available board space to ensure the 2.0x1.6mm package fits within the designated area.

Oscillators Part Context

This model belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages, including 1.8V and 2.5V options, across similar small form factors. The '18' prefix often denotes specific voltage or series characteristics within the manufacturer's catalog, while the 'PD' indicates power-down capability.

Oscillators Replacement Considerations

Direct substitutes may include other 44.3417 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers such as Epson, NDK, or SiTime. Verify pin compatibility and electrical parameters before substitution. Alternative Mercury models like the 18QHTF21-44.300-PD offer similar form factors but different frequencies.