18QHTF21-13.430-PD

Overview

The 18QHTF21-13.430-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a fixed frequency of 13.43 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes a standby or power-down control feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for timing applications requiring precise clock signals within specified operating temperature ranges.

Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Integrates standby mode functionality to reduce power consumption during idle periods
• Utilizes a leadless surface-mount package for automated assembly integration

Applications

• Clock signal generation for digital communication interfaces
• Timing reference for microcontroller systems
• Synchronization sources for data processing circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits defined in the official datasheet. Ensure the PCB footprint matches the 2.0x1.6mm SMD no-lead package specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a 13.43 MHz clock source is required for LVCMOS-compatible logic families. Consider the 1.8V supply constraint and the necessity for a power-down feature in battery-operated or energy-efficient designs. Evaluate the thermal performance and size constraints of the 2.0x1.6mm package against available board space. Compare alternative frequencies if the system requires different clock speeds while maintaining similar package and voltage characteristics.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronic Ind. Co. Ltd. The series offers various frequency options including 8 MHz, 18.1059 MHz, 30.3 MHz, 51.2 MHz, and 67.563 MHz. All variants share common electrical characteristics such as 1.8V operation, LVCMOS outputs, and standby capabilities. The series is characterized by its compact form factor and suitability for modern electronic devices requiring reliable timing solutions.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical package and voltage specs but different frequencies, such as 18QHTF21-8.000-PD or 18QHTF21-30.300-PD, provided the system clock requirement changes. Cross-brand replacements require matching LVCMOS output, 1.8V supply, 13.43 MHz frequency, and 2.0x1.6mm SMD no-lead package dimensions.