ST1284-01A8

Overview

The ST1284-01A8 is a highly integrated termination network designed for enhanced high-speed parallel ports, complying with the IEEE 1284 standard. It functions as an EMI/RFI filter utilizing RC technology to suppress noise and protect signals. The device features integrated ESD protection and includes specific resistor values of 33 Ohms and 4.7k Ohms alongside a capacitor value of 180pF. It operates within a maximum supply voltage of 5.5V and supports a temperature range up to +70°C. Packaged in a 28-pin QSOP format, it serves as a single termination network for parallel interface applications.

Feature Summary

• Highly integrated termination solution compliant with IEEE 1284 standards
• Built-in ESD protection for signal integrity enhancement
• Integrated RC filtering network for EMI/RFI suppression

Applications

• Enhanced high-speed parallel port termination
• EMI/RFI filtering in parallel interface circuits
• Single termination networks for legacy parallel connections

Procurement Notes

Verify component authenticity through authorized distributors due to obsolete lifecycle status. Confirm package type matches design requirements as variations exist within the ST1284 family. Check RoHS compliance documentation for current manufacturing batches. Ensure thermal ratings align with system operating conditions before integration into final assemblies.

Selection Notes

Select this component when IEEE 1284 compliance is required for parallel port interfaces. Consider its integrated ESD protection and RC filtering capabilities for noise-sensitive environments. Evaluate the 28-pin QSOP package constraints against available PCB space. Compare performance characteristics against other bus terminators if higher speed or different voltage levels are needed.

Part Context

This part belongs to the ST1284 series of bus terminators manufactured by STMicroelectronics. It is specifically engineered for parallel port applications requiring robust signal termination and noise reduction. The series focuses on integrating multiple passive components into a single compact package to simplify circuit design and improve reliability in high-speed data transmission scenarios.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided source material for direct replacement verification.