18QHTF21-4.31818-OE

Oscillators Overview

The 18QHTF21-4.31818-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 4.31818 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and features an enable/disable control function. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range of -40°C to 85°C and offers a frequency stability of ±50ppm.

Oscillators Feature Summary

• Provides precise clock timing and frequency synchronization for digital circuits
• Features low voltage operation compatible with modern semiconductor processes
• Includes enable/disable functionality for power management optimization

Oscillators Applications

• General purpose clock generation in embedded systems
• Timing reference for microcontrollers and processors
• Frequency synchronization in communication modules

Oscillators 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 constraints. Check for RoHS compliance status if required by your manufacturing standards. Validate the enable pin configuration with your control logic.

Oscillators Selection Notes

Select this component when a stable 4.31818 MHz reference is required in space-constrained designs. Consider the ±50ppm stability for applications not requiring high-precision TCXO performance. Evaluate the LVCMOS output swing against your input threshold requirements. Compare the 2.0x1.6mm footprint against available board space. Assess the -40°C to 85°C range against environmental conditions.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronic. The series typically includes various frequencies and voltage options within the same physical package. These components are designed for general timing applications where size and power efficiency are priorities. The manufacturer specializes in quartz-based frequency control products.

Oscillators Replacement Considerations

Direct replacements must match the 4.31818 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify compatibility of the enable/disable pin functionality. Cross-reference stability specifications and operating temperature ranges. Ensure mechanical dimensions are identical for PCB reflow compatibility.