18QHTF21-3.428-OE

Oscillators Overview

The 18QHTF21-3.428-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 3.428 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an enable/disable function to control power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly. It supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V supply
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards
• Industrial control modules

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet. Check for any specific reflow soldering profile recommendations to prevent thermal damage during assembly processes.

Oscillators Selection Notes

Select this component when a precise 3.428 MHz reference is required for LVCMOS-compatible digital circuits. Consider the ±50ppm stability specification for timing accuracy needs. The enable/disable feature makes it suitable for battery-powered devices requiring power management. Evaluate the -40°C to 85°C temperature range against the environmental conditions of the final application to ensure reliable performance.

Oscillators Part Context

This part belongs to the Mercury Electronic Ind. Co., Ltd. SMD Oscillator series, specifically the H21 or similar standard XO family. The manufacturer specializes in quartz crystals and oscillators, established as a pioneer in Taiwan's crystal industry since 1973. This series provides standard frequency solutions for various electronic applications requiring reliable timing signals.

Oscillators Replacement Considerations

Direct substitutes must match the 3.428 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as current consumption and start-up time. Cross-reference with other manufacturers' equivalent parts ensuring identical form factor and functional specifications.