18QHTF21-10.775-PD

Overview

The 18QHTF21-10.775-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.775 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for timing applications requiring precise frequency stability in low-voltage digital circuits.

Feature Summary

• Supports LVCMOS output logic for direct interface with digital systems
• Includes power-down capability to reduce current consumption during standby
• Utilizes a small form factor SMD package suitable for space-constrained designs

Applications

• Portable electronic devices requiring low power consumption
• Battery-operated equipment needing extended operational life
• Digital communication interfaces utilizing LVCMOS standards

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Request the official datasheet from Mercury Electronics for detailed electrical characteristics and reliability data.

Selection Notes

Select this model when a 10.775 MHz clock signal is required with LVCMOS compatibility. Consider the 1.8V operating voltage and power-down feature for energy efficiency. Evaluate the 2.0x1.6mm package size against available board space. Compare performance metrics such as phase noise and stability if high-precision timing is critical for the application.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronic. The series offers various frequencies with consistent LVCMOS outputs and low-voltage operation. Similar parts in the lineup include models like 18QHTF21-51.200-PD and 18QHTF21-75.675-PD, differing primarily in frequency specifications while maintaining identical package and logic types.

Replacement Considerations

Direct substitutes within the same series include 18QHTF21-10.775 (without PD suffix) if power-down is not required. Verify pinout compatibility and electrical parameters before replacing. Cross-reference with other manufacturers' 10.775 MHz LVCMOS oscillators only if mechanical and electrical specs match exactly.