18QHTF21-21.504-OE

Oscillators Overview

The 18QHTF21-21.504-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 21.504 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. A key functional characteristic is the inclusion of an enable/disable control pin, allowing for power management in embedded systems. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports active enable and disable functionality via dedicated control pin
• Generates stable clock signals using LVCMOS output logic levels
• Operates with low voltage supply requirements for energy efficiency

Oscillators Applications

• Embedded system clock generation
• Digital signal processing circuits
• Communication interface timing sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Ensure that the PCB footprint matches the 4-SMD, No Lead package dimensions provided in the official datasheet. Confirm that the 1.8V supply rail can maintain stability under all operating conditions to guarantee accurate oscillation.

Oscillators Selection Notes

Select this component when a precise 21.504 MHz reference is required for LVCMOS-compatible digital logic. Consider the enable/disable feature if power conservation during idle states is a priority. Evaluate the thermal performance and operating temperature range to ensure reliability within the intended environmental constraints of the final application.

Oscillators Part Context

This oscillator belongs to the Mercury Electronics XO series, which focuses on providing reliable frequency control solutions. The manufacturer has extensive experience in quartz crystal production, offering components that meet standard industry requirements for timing accuracy and stability in consumer and industrial electronics.

Oscillators Replacement Considerations

Direct substitutes must match the 21.504 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter before integrating alternative parts into the existing design.