18QHTF21-1.205888-OE

Overview

The 18QHTF21-1.205888-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.205888 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features enable/disable functionality for power management. Frequency stability is specified at ±50ppm over the operating temperature range of -40°C to +85°C. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Standard XO configuration with LVCMOS output interface
• Integrated enable/disable control function
• Compact 4-SMD no lead surface mount package

Applications

• Digital audio timing circuits
• General purpose clock generation
• Embedded system timing references

Procurement Notes

Verify the specific frequency suffix matches the required 1.205888 MHz specification. Confirm the OE suffix indicates the enable/disable feature if critical for design. Ensure the 1.8V supply voltage aligns with the target system rails. Check package compatibility with PCB footprint requirements. Validate manufacturer authenticity through authorized channels.

Selection Notes

Select this component when a precise 1.205888 MHz clock signal is required for digital audio or similar applications. Consider the 1.8V supply constraint and LVCMOS output compatibility with downstream logic. The enable/disable feature offers power savings opportunities. Evaluate the ±50ppm stability against system jitter requirements. The small form factor suits space-constrained designs.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies within a consistent 4-SMD package. Mercury Electronics specializes in quartz timing components including crystals and oscillators. This specific model targets applications requiring stable low-frequency clocking with power management capabilities.

Replacement Considerations

Direct substitutes must match the 1.205888 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent stability and temperature range specifications. Cross-reference pinout and enable functionality with alternative manufacturers' datasheets.