18QHTF21-10.20905-OE

Overview

The 18QHTF21-10.20905-OE is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.20905 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS compatible output interface
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package

Applications

• High-performance digital systems
• Communication equipment timing
• Embedded system clock generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the enable pin logic levels are compatible with your microcontroller or FPGA outputs to guarantee proper oscillator activation and stable operation.

Selection Notes

Select this component when a low-voltage 1.8V LVCMOS oscillator is required in a minimal footprint. The enable feature allows for dynamic power saving in battery-operated devices. Consider the 10.20905 MHz frequency specifically if it matches your baud rate or sampling requirements. Verify thermal performance within the small SMD package for your enclosure constraints.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal oscillators. The manufacturer has decades of experience in frequency control products. This series typically offers standard specifications suitable for general-purpose timing applications where size and low voltage are prioritized over extreme stability or wide temperature ranges.

Replacement Considerations

Direct substitutes include other 10.20905 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers like Epson, NDK, or SiTime. Ensure the replacement maintains the same 1.8V supply requirement and enable pin functionality. Check for identical pinout configurations to avoid PCB redesign.