18QHTF21-21.500-OE

Oscillators Overview

The 18QHTF21-21.500-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 21.5 MHz and utilizes LVCMOS output logic levels. The device supports an active enable/disable control function via a 1.8V supply voltage, ensuring efficient power management during operation. It is housed in a compact 4-SMD, no lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output compatibility for digital interface integration
• Active enable/disable control functionality
• Compact 4-SMD no lead surface-mount package

Oscillators Applications

• General-purpose digital timing circuits
• Embedded systems requiring stable clock sources
• Consumer electronics with space constraints

Oscillators Procurement Notes

Verify the specific suffix 'OE' against the manufacturer's current datasheet to confirm availability and exact electrical characteristics. Ensure the 1.8V supply requirement matches the target system design. Confirm that the 4-SMD no lead package dimensions align with the PCB footprint specifications before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a 21.5 MHz clock signal is required with low-voltage LVCMOS compatibility. The enable/disable feature makes it suitable for battery-powered or power-sensitive designs. Consider the physical size of the 4-SMD package relative to available board space and ensure thermal management meets the operating temperature range specified in the official documentation.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which provides standard quartz crystal oscillators. The 18QHTF21 prefix indicates the specific series and package type, while the numeric value denotes the frequency. The OE suffix typically identifies specific packaging or ordering variations within the manufacturer's catalog.

Oscillators Replacement Considerations

Check for parts with identical 21.5 MHz frequency, LVCMOS output, and 1.8V supply requirements. Verify pinout compatibility for the 4-SMD no lead package. Cross-reference with other Mercury Electronics models in the same series for potential direct substitutes.