18QHTF21-33.3333-PD

Oscillators Overview

The 18QHTF21-33.3333-PD is a standard quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 33.3333 MHz and utilizes LVCMOS output logic. The device is designed for operation with a 1.8V supply voltage and includes a standby (power down) function to reduce power consumption when not in use. It is housed in a compact 4-SMD, no lead package, suitable for surface-mount assembly in space-constrained electronic designs.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode capability for power management
• Utilizes hermetic ceramic leadless SMD packaging

Oscillators Applications

• High-performance digital systems requiring precise clock signals
• Communication equipment utilizing standard frequency references
• Embedded systems with low-voltage power constraints

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout guidelines. Check for RoHS compliance status if required by your manufacturing standards. Consult the official datasheet for detailed electrical characteristics and thermal specifications.

Oscillators Selection Notes

Select this component when a stable 33.3333 MHz reference is needed with low power consumption capabilities. The LVCMOS output ensures direct interfacing with most digital logic families without additional buffering. The standby feature makes it suitable for battery-operated or energy-efficient applications. Consider the operating temperature range and aging specifications for long-term reliability in your environment.

Oscillators Part Context

This part belongs to the QHTF series from Mercury Electronics, which offers various frequencies between 1.0 MHz and 200 MHz. The series provides multiple supply voltages and package options. The 'PD' suffix typically indicates a specific pin configuration or package variant within the manufacturer's lineup. Mercury Electronics has been a pioneer in the crystal industry since 1973, focusing on frequency control products.

Oscillators Replacement Considerations

Direct substitutes may include other 33.3333 MHz LVCMOS oscillators in 4-SMD packages from manufacturers like Abracon or SiTime. Verify pinout compatibility and voltage levels before substitution. Cross-reference with the 18QHTF21-33.33333-PD variant, noting potential minor frequency precision differences. Ensure any replacement maintains the same standby functionality and package dimensions.