18QHTF21-12.8888-OE

Overview

The 18QHTF21-12.8888-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 12.8888 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an 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.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable functionality for power management
• Compact 4-SMD no-lead surface mount package design

Applications

• Digital signal processing circuits requiring precise clock timing
• Communication modules utilizing standard frequency references
• Embedded systems with low-voltage logic requirements

Procurement Notes

Verify the specific ordering suffix against official Mercury Electronics documentation to confirm voltage levels and package dimensions. Ensure the selected variant matches the required operating temperature range and load capacitance specifications for the target application. Cross-reference datasheet parameters to validate electrical characteristics before integration into the design.

Selection Notes

Select this component when a 1.8V supply voltage is required for the clock source. Consider the LVCMOS output compatibility with downstream digital logic families. Evaluate the 4-SMD package size constraints against available PCB real estate. Confirm that the enable/disable feature aligns with system power sequencing requirements.

Part Context

This part belongs to the Mercury Electronics XO series, which provides frequency control solutions. The manufacturer specializes in quartz crystals and oscillators, including TCXOs and VCXOs. The 18QHTF21 series represents standard clock oscillators designed for general-purpose electronic applications requiring stable frequency generation.

Replacement Considerations

Direct substitutes include other 12.8888 MHz LVCMOS oscillators from Mercury Electronics with identical 1.8V operation and 4-SMD packaging. Verify pinout compatibility and electrical specifications before substitution.