18QHTF21-1.2864-PD

Overview

The 18QHTF21-1.2864-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 1.2864 MHz and utilizes LVCMOS output logic levels. The component requires a supply voltage of 1.8V and features a standby mode for power-down functionality. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports low-power operation with a dedicated standby function
• Provides stable timing signals via LVCMOS output interface
• Utilizes quartz-based technology for frequency precision

Applications

• Battery-powered electronic devices requiring low current consumption
• Portable consumer electronics systems
• General-purpose digital circuits needing precise clock references

Procurement Notes

Verify the specific suffix 'PD' against official Mercury Electronics documentation to confirm the exact packaging and tape-and-reel specifications. Ensure the 1.8V supply requirement aligns with your system design before procurement. Cross-reference the part number with authorized distributors to confirm availability and authenticity.

Selection Notes

Select this component when a 1.2864 MHz clock signal is required with minimal power consumption. The 1.8V operating voltage makes it suitable for modern low-voltage digital logic families. Consider the 4-SMD package size for space-constrained board layouts compared to larger through-hole alternatives.

Part Context

This oscillator belongs to the Mercury Electronic series of quartz-based timing components. The company specializes in frequency control products including crystals and oscillators. This specific model represents a standard XO variant optimized for portable applications where power efficiency is critical.

Replacement Considerations

Direct substitutes include other 1.2864 MHz LVCMOS oscillators from Mercury Electronics such as the 18QHTF21-1.2864-OE, provided the pinout and electrical characteristics match exactly. Verify compatibility with alternative manufacturers only if the footprint and voltage levels are identical.