AT83C24B-TIRUL

Specialized Overview

The AT83C24B-TIRUL is a smart card reader interface IC designed for EFT/POS terminals and set-top boxes. It supports ISO 7816, EMV2000, and GSM standards with programmable voltage outputs of 5V (Class A), 3V (Class B), or 1.8V. The device features an integrated high-efficiency step-up DC/DC converter operating at 80-98% efficiency. Communication with the host microcontroller is managed via a Two-Wire Interface (TWI) supporting up to eight devices on a single bus. It includes robust protection mechanisms such as short-circuit current limitation and over 8kV ESD protection compliant with MIL/STD 883 Class 3.

Specialized Feature Summary

• Compliance with major smart card standards including ISO 7816, EMV2000, and GSM.
• Integrated high-efficiency DC/DC converter reducing system bill of materials.
• Programmable TWI address allowing multiple units on a shared bus.
• Advanced power management with low standby current consumption.

Specialized Applications

• Electronic Fund Transfer (EFT) terminals
• Point-of-Sale (POS) systems
• Set-top boxes with conditional access

Specialized Procurement Notes

Verify that the ordering suffix corresponds to the specific package type required, typically QFN28 for this variant. Confirm the revision level matches the design requirements. Ensure the supplier provides traceability documentation consistent with Microchip Technology standards. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Specialized Selection Notes

Select the AT83C24B-TIRUL when a dedicated smart card interface with integrated power regulation is needed. This model is suitable for applications requiring support for both synchronous and asynchronous cards. Consider the NDS-specific version only if mandatory compatibility with NDS Video-Guard software is required. Evaluate the TWI bus topology to ensure address conflicts are avoided across all connected devices.

Specialized Part Context

This component belongs to the AT83C24 family of smart card reader interfaces manufactured by Microchip Technology. It serves as a bridge between host processors and smart cards, handling complex activation sequences and power delivery. The TIRUL suffix indicates a specific tape-and-reel packaging configuration intended for automated surface-mount assembly processes.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Microchip change notices for any direct replacements within the AT83C24 series.