18QHTF21-2.439-PD

Oscillators Overview

The 18QHTF21-2.439-PD is a 2.439 MHz crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates with an LVCMOS output logic and supports a supply voltage of 3.3V. The component features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, designed for space-saving applications.

Oscillators Feature Summary

• Compact leadless SMD package design for space-constrained layouts
• LVCMOS output interface compatible with standard digital logic
• Integrated power-down capability for energy-efficient standby operation

Oscillators Applications

• Low-voltage digital circuit clocking
• Space-saving embedded system designs
• Portable electronic devices requiring efficient power management

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 3.3V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6mm footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided in the official datasheet to ensure reliable assembly.

Oscillators Selection Notes

Select this component when a low-profile, leadless oscillator is required for 3.3V systems. The LVCMOS output is suitable for general-purpose digital interfaces. Consider the power-down feature if dynamic power management is necessary. Verify that the 2.439 MHz frequency meets the timing requirements of the target application compared to standard frequencies.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz crystals and oscillators. The series offers various frequencies and voltage options in a standardized small outline package. This specific model provides a 2.439 MHz output, distinguishing it from other variants like the 2.000 MHz or 6.1679 MHz models within the same family.

Oscillators Replacement Considerations

Direct substitutes may include other 2.439 MHz XO components from different manufacturers offering identical 3.3V LVCMOS specifications and 2.0x1.6mm footprints. Ensure compatibility regarding pinout configuration and thermal characteristics. Verify that alternative parts support the same power-down functionality if required by the design.