18QHTF21-18.543956-OE

Oscillators Overview

The 18QHTF21-18.543956-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.543956 MHz with an LVCMOS output interface. The device requires a 1.8V supply voltage and features enable/disable control functionality. It is housed in a 4-SMD package without lead. The unit exhibits a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to +85°C. Packaging is provided in strip format.

Oscillators Feature Summary

• Supports active enable and disable control for power management
• Utilizes LVCMOS output logic levels
• Designed for surface-mount assembly in compact form factors

Oscillators Applications

• Digital signal processing circuits requiring precise clocking
• Communication equipment utilizing standard frequency references
• Embedded systems with low-voltage logic interfaces

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and meets the current consumption specifications outlined in the official datasheet. Ensure the PCB footprint matches the 4-SMD package dimensions precisely to avoid soldering defects during assembly.

Oscillators Selection Notes

Select this component when a fixed frequency reference near 18.5 MHz is required with low power consumption. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the ±50ppm stability limit for applications sensitive to timing jitter or drift over the specified industrial temperature range.

Oscillators Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers standard XO configurations optimized for cost-effective mass production in consumer and industrial electronics.

Oscillators Replacement Considerations

Direct substitutes must match the 18.543956 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pin compatibility and electrical characteristics with equivalent parts from other manufacturers if sourcing alternatives.