18QHTF21-28.2244-PD

Oscillators Overview

The 18QHTF21-28.2244-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 28.2244 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a Standby function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Oscillators Feature Summary

• Supports Standby mode for power down functionality
• Utilizes LVCMOS output logic interface
• Designed for surface-mount assembly with no-lead package

Oscillators Applications

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

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a precise 28.2244 MHz clock source is required with low power consumption capabilities. The integrated standby feature makes it suitable for battery-operated or energy-efficient designs. Consider the LVCMOS compatibility with downstream digital logic levels. Evaluate the thermal performance and operating temperature range to ensure reliability under the intended environmental conditions of the final application.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which provides standard clock oscillators for various electronic applications. The manufacturer specializes in quartz crystals and timing devices, offering components like TCXOs and VCTCXOs. This specific model represents a fixed-frequency solution within their portfolio, designed for cost-effective and reliable timing needs in consumer and industrial electronics.

Oscillators Replacement Considerations

Direct substitutes must match the 28.2244 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent electrical parameters such as phase noise and jitter if critical. Cross-reference with other manufacturers' offerings ensuring identical pinout and form factor to maintain board compatibility without redesign.