18QHTF21-85.3444-PD

Overview

The 18QHTF21-85.3444-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 85.3444 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a standby mode for power down capabilities. It is housed in a compact 4-SMD, no lead package suitable for surface mount applications.

Feature Summary

• LVCMOS output interface
• Standby power down capability
• Compact 4-SMD no lead package

Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when an 85.3444 MHz clock source is required with low voltage operation. Consider the LVCMOS output compatibility with downstream digital logic levels. Evaluate the thermal and environmental conditions to ensure the standard oscillator meets the operational range. Verify package dimensions for space-constrained designs.

Part Context

This part belongs to the Mercury Electronics SMD oscillator series designed for general-purpose clocking. The 18QHTF21 series typically offers standard performance characteristics for consumer and industrial electronics. It serves as a fundamental timing element in systems requiring precise frequency generation from a quartz resonator.

Replacement Considerations

Substitute parts must match the 85.3444 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical parameters such as phase noise and jitter if specified in the original design documentation.