18QHTF21-13.531-PD

Overview

The 18QHTF21-13.531-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 13.531 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes a power-down (Standby) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for timing applications requiring precise frequency stability within a small form factor.

Feature Summary

• LVCMOS output interface for digital circuit compatibility
• Integrated power-down capability to reduce consumption
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose timing clock generation
• Digital signal processing systems
• Embedded microcontroller clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to guarantee proper assembly and electrical connection.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The choice is driven by the need for a small 2.0x1.6mm footprint and the inclusion of a power-down feature for efficiency. Consider the operating temperature range and frequency stability needs relative to other available options from the manufacturer.

Part Context

This part belongs to the 18QHTF21 series of standard XO oscillators from Mercury Electronic. The series typically offers various frequencies within a consistent 4-SMD package format. The 'PD' suffix indicates the presence of a power-down control pin, distinguishing it from non-power-down variants in the same physical package family.

Replacement Considerations

Direct substitutes must match the 13.531 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility for the power-down function. Cross-reference with other manufacturers offering similar SMD oscillators if availability is constrained.