18QHTF21-13.235156-PD

Overview

The 18QHTF21-13.235156-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.235156 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down standby mode for energy efficiency. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes a dedicated power-down standby function to reduce consumption
• Utilizes a small-footprint 4-SMD no-lead surface-mount package

Applications

• Embedded systems requiring precise clock synchronization
• Portable electronic devices utilizing low-power components
• Communication modules needing stable frequency references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail can maintain stability under all operating conditions. Ensure the PCB layout accommodates the 2.0x1.6mm footprint and supports the required thermal dissipation for the SMD package.

Selection Notes

Select this component when a precise 13.235156 MHz reference is needed in space-constrained designs. The LVCMOS interface ensures direct compatibility with standard digital logic families. Consider the power-down feature if battery life or thermal management is critical for the target application environment.

Part Context

This model belongs to the 18QHTF series of surface-mount oscillators from Mercury Electronics. The series is characterized by its small physical dimensions and standardized output levels. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from continuously active variants within the same family.

Replacement Considerations

Direct replacements must match the 13.235156 MHz frequency, 1.8V supply, and LVCMOS output. Verify that substitute components support the same 4-SMD no-lead package dimensions to ensure mechanical fit without redesigning the PCB footprint.