18QHTF21-26.666666-PD

Oscillators Overview

The 18QHTF21-26.666666-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 26.666666 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Oscillators Feature Summary

• LVCMOS output logic interface
• Standby (Power Down) control capability
• Compact 4-SMD No Lead package design

Oscillators Applications

• General purpose clock generation
• Digital signal processing systems
• Communication equipment timing

Oscillators Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to ensure correct frequency and package configuration. Confirm that the 1.8V supply requirement aligns with system design constraints before procurement. Cross-reference the 4-SMD No Lead footprint with PCB layout specifications to guarantee mechanical compatibility.

Oscillators Selection Notes

Select this component when a precise 26.666666 MHz reference is required with low voltage operation. Consider the LVCMOS output compatibility with downstream digital logic levels. Evaluate the standby feature benefits for power-sensitive designs requiring active power-down states during idle periods.

Oscillators Part Context

This model belongs to the Mercury Electronics 18QHTF21 series of standard XO oscillators. The series offers various frequencies with consistent LVCMOS outputs and 1.8V operation. The PD suffix indicates the inclusion of a power-down control pin, distinguishing it from non-controlled variants within the same package family.

Oscillators Replacement Considerations

Direct substitutes must match the 26.666666 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD No Lead package. Verify equivalent electrical characteristics such as load capacitance and drive level if replacing with components from other manufacturers.