18QHTF21-16.666666-PD

Oscillators Overview

The 18QHTF21-16.666666-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 16.666666 MHz with a stability of 50 ppm. The device utilizes an LVCMOS output interface and functions at a supply voltage of 1.8V. Maximum supply current is rated at 22 mA. It features a standby power-down mode and is housed in a compact 4-SMD, no lead package.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes a standby power-down function for energy management
• Utilizes a base crystal resonator for frequency generation

Oscillators Applications

• General-purpose clock signal generation in electronic circuits
• Embedded systems requiring precise timing references
• Digital communication interfaces utilizing standard logic levels

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 4-SMD no lead package dimensions align with the PCB footprint. Ensure the 1.8V supply voltage matches the system power rails to guarantee proper operation within the specified 50 ppm stability range.

Oscillators Selection Notes

Select this component when a stable 16.666666 MHz reference is required in space-constrained designs. The LVCMOS output ensures compatibility with standard digital logic families. Consider the 22 mA maximum current consumption for power budget calculations. The power-down feature offers flexibility for applications requiring intermittent operation or extended battery life.

Oscillators Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronic Ind. Co., Ltd. The series is characterized by small form factors and low voltage operation. Mercury Electronics has specialized in frequency control products since 1973, establishing itself as a pioneer in the quartz crystal industry in Taiwan.

Oscillators Replacement Considerations

Direct substitutes must match the 16.666666 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications such as current consumption and stability before substitution.