18QHTF21-2.439-OE

Oscillators Overview

The 18QHTF21-2.439-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 2.439 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package. The component supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.

Oscillators Feature Summary

• Provides stable timing signals via LVCMOS output interface
• Includes hardware enable and disable functionality for power management
• Designed for surface-mount integration with a leadless SMD package

Oscillators Applications

• Embedded systems requiring low-frequency clock references
• Consumer electronics with space-constrained PCB layouts
• Industrial control modules operating within extended temperature ranges

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the specified limits to ensure reliable oscillator performance. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to avoid assembly issues.

Oscillators Selection Notes

Select this component when a precise 2.439 MHz clock signal is required with low power consumption due to the 1.8V operation. Consider the ±50ppm stability for applications sensitive to timing drift. The enable/disable feature makes it suitable for battery-powered devices where power conservation during idle states is critical. Evaluate the thermal environment to ensure operation within the -40°C to 85°C range.

Oscillators Part Context

This oscillator belongs to the Mercury Electronics 18QHTF21 series, which offers various frequency options in a small form factor. The series is designed for modern electronic applications demanding high reliability and miniaturization. Mercury Electronics specializes in frequency control products, including crystals and oscillators, serving global markets with precision timing solutions since 1973.

Oscillators Replacement Considerations

Direct replacements must match the 2.439 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pin compatibility and electrical characteristics such as current consumption and stability. Consult manufacturer cross-reference lists for verified equivalents.