18QHTF21-10.519-PD

Overview

The 18QHTF21-10.519-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.519 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 2.0x1.6mm. This component is designed for applications requiring precise timing signals within space-constrained electronic systems.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose timing clock generation
• Embedded system synchronization
• Consumer electronics signal processing

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 footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards. Validate the power-down control signal polarity with your microcontroller outputs.

Selection Notes

Select this oscillator when a low-voltage 1.8V operation is required alongside a small form factor. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the power-down feature if battery life or thermal management is a priority. The 10.519 MHz frequency is specific; ensure it meets your system's clock division needs. Compare against other Mercury models in the QHTF series for alternative frequencies or package sizes.

Part Context

This part belongs to the Mercury Electronics QHTF series of quartz crystal oscillators. The series typically offers various frequencies and supply voltages in similar small packages. Mercury Electronics is a Taiwan-based manufacturer specializing in frequency control products including crystals, TCXOs, and VCTCXOs. The 'PD' suffix indicates the inclusion of a power-down pin or function.

Replacement Considerations

Direct replacements must match the 10.519 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Other Mercury models like 18QHTF21-51.200-PD share the same package but differ in frequency. Verify pinout compatibility and electrical characteristics before substituting.