18QHTF21-21.400-OE

Oscillators Overview

The 18QHTF21-21.400-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 21.4 MHz and utilizes LVCMOS output logic levels. The device supports an enable/disable control function and is powered by a 1.8V supply voltage. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• LVCMOS compatible output interface for digital circuit integration
• Integrated enable and disable control functionality
• Compact surface-mount design suitable for space-constrained applications

Oscillators Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources

Oscillators Procurement Notes

Verify the specific frequency suffix matches the required 21.4 MHz specification. Confirm that the 1.8V operating voltage aligns with the target system power rails. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout requirements before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside precise 21.4 MHz timing. Consider the small 2.0x1.6 mm footprint for dense board layouts. Verify compatibility with LVCMOS input thresholds of downstream logic circuits to ensure reliable signal transmission.

Oscillators Part Context

This part belongs to the 18QHTF21 series of quartz crystal oscillators from Mercury Electronic. The series typically offers various standard frequencies and voltage options within a standardized small outline package format designed for high-volume consumer and industrial electronics manufacturing.

Oscillators Replacement Considerations

Direct substitutes include other 21.4 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and thermal characteristics when cross-referencing with alternative manufacturers' offerings.