18QHTF21-12.285543-PD

Overview

The 18QHTF21-12.285543-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.285543 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby and power-down capabilities
• Utilizes LVCMOS output logic

Applications

• General clock signal generation
• Embedded systems requiring low power consumption
• Compact electronic devices

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Confirm that the 1.8V supply requirement aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper assembly and electrical connectivity.

Selection Notes

Select this component when a precise 12.285543 MHz clock source is required within space-constrained designs. The choice is driven by the need for low-voltage compatibility and power-saving features. Evaluate the trade-off between the small form factor and the specific electrical characteristics provided by the LVCMOS interface.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has a long history in Taiwan's crystal industry. This series typically offers standard XO configurations suitable for various digital applications requiring stable clock signals.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies, such as 18QHTF21-12.300-PD, if frequency flexibility exists. Cross-referencing pinouts and electrical parameters is essential when considering alternative manufacturers or packages.