18QHTF21-41.943-OE

Oscillators Overview

The 18QHTF21-41.943-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 41.943 MHz and utilizes LVCMOS output logic levels. The device supports an active enable/disable control function via a dedicated pin, allowing for power management in host systems. It is designed to operate with a supply voltage of 1.8V. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Active enable/disable control capability
• Compact 4-pin surface-mount form factor

Oscillators Applications

• Digital signal processing clock sources
• Communication equipment timing references
• Embedded system clock generation

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the host system's power rails. Ensure the 4-SMD footprint matches the PCB layout specifications. Cross-reference the manufacturer datasheet for absolute maximum ratings to prevent operational damage.

Oscillators Selection Notes

Select this component when a precise 41.943 MHz clock signal is required for LVCMOS-compatible circuits. The integrated enable feature makes it suitable for battery-powered or power-sensitive designs requiring dynamic clock control. Consider the 1.8V operating voltage constraint during system architecture planning. Evaluate the physical dimensions of the 4-SMD package against available board space constraints.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various frequencies such as 6.76438 MHz, 13.1313 MHz, 21.2 MHz, 44.2 MHz, and 86.943 MHz. All variants share similar packaging and electrical characteristics, differing primarily in their output frequency and specific ordering suffixes.

Oscillators Replacement Considerations

Direct replacements include other 18QHTF21 series models with identical pinouts and voltages but different frequencies, such as 18QHTF21-44.200-OE or 18QHTF21-21.200-OE, if frequency adjustment is permissible. Verify functional equivalence with generic LVCMOS oscillators only if pinout and voltage match exactly.