18QHTF21-13.541-PD

Overview

The 18QHTF21-13.541-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.541 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead surface-mount package with dimensions of 2.00mm x 1.60mm.

Feature Summary

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

Applications

• General clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

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 no-lead package footprint matches your PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 13.541 MHz reference is required in space-constrained applications. The choice is driven by the need for low-profile surface-mount packaging and integrated power management capabilities. Consider the LVCMOS interface compatibility with your target microcontroller or FPGA inputs to ensure signal integrity without additional level shifting.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in miniature crystal oscillators. The series is characterized by small form factors suitable for dense PCB layouts. The 'PD' suffix indicates the inclusion of power-down control, differentiating it from continuous-operation variants within the same family.

Replacement Considerations

Direct substitutes must match the 13.541 MHz frequency, 1.8V supply, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if available. Cross-reference with other manufacturers offering equivalent LVCMOS oscillators in identical physical dimensions.