18QHTF21-13.125225-PD

Overview

The 18QHTF21-13.125225-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.125225 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby mode with power down capability. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby functionality with power down control
• Provides LVCMOS digital output signals

Applications

• General clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package dimensions fit within your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Selection Notes

Select this component when a precise 13.125225 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage as a primary constraint for power supply design. Evaluate the need for power-down capabilities if energy efficiency during idle states is critical. Compare physical footprint requirements against available board space to ensure compatibility with the 4-SMD package.

Part Context

This oscillator belongs to the QHTF series from Mercury Electronics, which focuses on small-sized, high-frequency crystal oscillators. The series typically offers various frequencies and voltage options. The 'PD' suffix indicates the inclusion of a power-down pin or function, allowing for active standby modes to reduce power consumption in portable or battery-operated devices.

Replacement Considerations

Direct substitutes may include other models from the same QHTF family with identical pinout and package dimensions but different frequencies or voltages. Cross-referencing with other manufacturers requires verifying electrical parameters such as current consumption and output swing levels. Ensure any replacement supports the same LVCMOS logic interface and 1.8V supply requirement.