18QHTF21-103.680-OE

Overview

The 18QHTF21-103.680-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 103.680 MHz and utilizes LVCMOS output logic. The device is designed for surface mount assembly in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. It functions within an operating temperature range of -40°C to +85°C and requires a supply voltage of 1.8V. The component includes enable/disable functionality and exhibits a frequency stability of ±50 ppm.

Feature Summary

• Compact 4-SMD no-lead surface mount package
• LVCMOS output logic interface
• Enable/Disable control functionality
• Wide industrial temperature range operation

Applications

• General clock generation for digital circuits
• Embedded systems requiring precise timing references
• Communication equipment clock sources

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to ensure correct voltage and frequency specifications. Confirm package compatibility with PCB footprint requirements. Check for alternative lead-free or RoHS-compliant variants if environmental regulations apply. Validate supply chain authenticity through authorized distributors.

Selection Notes

Select this component when a low-profile surface mount oscillator is required for space-constrained designs. Ensure the 1.8V supply voltage aligns with the target system's power rails. Consider the ±50 ppm stability requirement against system timing tolerance needs. Verify that the LVCMOS output swing matches the input thresholds of downstream logic components.

Part Context

This part belongs to the QHTF series of quartz crystal oscillators from Mercury Electronics. The series offers various frequencies and voltages in standardized SMD packages. It serves as a fundamental timing source in electronic assemblies where stable clock signals are critical for synchronous data transfer and processing operations.

Replacement Considerations

Direct substitutes include other 103.680 MHz LVCMOS oscillators in 2.0x1.6mm packages from compatible manufacturers. Verify pinout compatibility and electrical parameter equivalence before substitution. Cross-reference with Mercury's own product line for updated revisions.