18QHTF21-6.61283-PD

Overview

The 18QHTF21-6.61283-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 6.61283 MHz with a frequency stability of ±50ppm. The device functions at a supply voltage of 1.8V and features LVCMOS output logic. It includes a standby (power down) capability for energy management. The component is housed in a compact 4-SMD, No Lead package, suitable for surface mount applications.

Feature Summary

• Standard XO configuration with LVCMOS output logic
• Integrated standby or power down functionality
• Compact 4-SMD no lead surface mount package

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design requirements. Ensure the 4-SMD no lead package dimensions fit the intended PCB layout constraints. Cross-reference the manufacturer part number to avoid confusion with similar variants in the series.

Selection Notes

Select this component when a low-voltage 1.8V operation is required for clock generation. Consider the ±50ppm stability specification for timing accuracy needs. The LVCMOS interface ensures compatibility with standard digital logic families. Evaluate the physical size of the 4-SMD package against available board space. Verify thermal performance within the specified operating temperature range.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series offers various frequencies and supply voltages. Mercury has extensive experience in manufacturing quartz crystals and oscillators. This specific model provides a precise 6.61283 MHz output for digital applications.

Replacement Considerations

Check for direct substitutes within the same series offering identical pinout and electrical characteristics. Verify compatibility of the LVCMOS output and 1.8V supply with existing circuit designs. Ensure the replacement maintains the required frequency stability and package type.