18QHTF21-21.7728-PD

Oscillators Overview

The 18QHTF21-21.7728-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 21.7728 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes a standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm, suitable for surface mount applications requiring precise clock signals.

Oscillators Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby mode for power management
• Utilizes LVCMOS output interface

Oscillators Applications

• General purpose clock generation
• Embedded system timing
• Consumer electronics

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the 4-SMD no-lead package footprint aligns with the PCB layout guidelines provided in the official datasheet to ensure reliable soldering and mechanical integrity during assembly processes.

Oscillators Selection Notes

Select this component when a 21.7728 MHz clock signal is required with low power consumption characteristics. The 1.8V operating voltage makes it suitable for modern low-voltage digital circuits. Consider the small 2.0x1.6mm package size for space-constrained designs. Verify compatibility with LVCMOS interfaces in the receiving logic gates or microcontrollers to ensure proper signal integrity and noise margins.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics Ind. Co. Ltd. The series offers various frequency options within a standardized small outline package. Mercury Electronics specializes in frequency control products, including quartz crystals and oscillators, providing solutions for timing applications across multiple industries.

Oscillators Replacement Considerations

Direct substitutes must match the 21.7728 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Cross-reference with other manufacturers offering identical electrical parameters and pin configurations to ensure functional equivalence without redesigning the host circuit.