18QHTF21-33.333-OE

Oscillators Overview

The 18QHTF21-33.333-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 33.333 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an integrated enable/disable control function to manage power consumption. 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 logic for digital interface compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V supply
• Surface-mount 4-SMD no lead package

Oscillators Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources
• Communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 4-SMD no lead package dimensions provided in the official mechanical drawing. Cross-reference the enable pin logic levels with the microcontroller or driver being used.

Oscillators Selection Notes

Select this component when a precise 33.333 MHz reference is required for LVCMOS-compatible digital circuits. The choice is driven by the need for low-power operation at 1.8V and the convenience of built-in enable/disable control. Consider the physical size constraints of the 4-SMD package during layout planning. This model is appropriate for applications where standard frequency accuracy and basic jitter performance are sufficient.

Oscillators Part Context

This part belongs to the Mercury Electronics SMD oscillator series, specifically designed for space-constrained electronic assemblies. The '18' prefix typically indicates the 1.8V supply voltage capability, while 'QHTF21' denotes the specific package and series characteristics. The suffix '-OE' identifies the exact frequency variant within the product line. Mercury Electronics leverages its long-standing expertise in quartz crystal manufacturing to produce these frequency control components.

Oscillators Replacement Considerations

Direct replacements must match the 33.333 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD no lead package. Verify pinout compatibility and enable/disable logic polarity. Alternative parts from other manufacturers require careful evaluation of electrical parameters and mechanical dimensions to ensure functional equivalence without redesigning the host circuit.