18QHTF21-42.656-OE

Oscillators Overview

The 18QHTF21-42.656-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 42.656 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features an enable/disable function for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications. The component supports an operating temperature range of -40°C to 85°C with a frequency stability of ±50ppm.

Oscillators Feature Summary

• Supports active enable and disable control functions
• Provides LVCMOS output signal compatibility
• Designed for low-voltage 1.8V operation

Oscillators Applications

• General purpose clock generation in embedded systems
• Data communication interface timing
• Consumer electronics requiring precise frequency references

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 specified operating temperature range to ensure consistent performance. Ensure the PCB layout accommodates the 4-SMD no-lead package dimensions correctly to maintain signal integrity and thermal reliability during assembly.

Oscillators Selection Notes

Select this component when a 42.656 MHz reference is required with LVCMOS compatibility. Consider the ±50ppm stability specification against system jitter requirements. Evaluate the 1.8V supply constraint against available power rails. The enable/disable feature offers power savings opportunities in battery-operated devices compared to always-on oscillators.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically includes various frequencies and voltage options. Mercury Electronics is a specialized manufacturer of frequency control products, emphasizing quartz crystal technology. This specific model represents a standard XO variant within their portfolio.

Oscillators Replacement Considerations

Direct substitutes must match the 42.656 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar small-outline oscillators if availability is constrained.