TDA8024TT/C1,118

Specialized Overview

The TDA8024TT/C1,118 is a smart card interface IC manufactured by NXP Semiconductors. It provides an analog interface for asynchronous 3 V or 5 V smart cards, performing supply, protection, and control functions between the card and microcontroller. The device features a DC-to-DC converter for VCC generation, powered separately from a 5 V ± 20% supply (VDDP). It includes three protected half-duplex bidirectional buffered I/O lines to card contacts C4, C7, and C8. The unit operates within an ambient temperature range of -25 °C to +85 °C and dissipates up to 0.56 W continuously. It utilizes a TSSOP28 package with gold wires.

Specialized Feature Summary

• Integrated DC-to-DC converter generates regulated 3 V or 5 V card supply voltage
• Enhanced ESD protection on card side exceeding 6 kV
• Built-in debounce on card presence contacts
• Non-inverted control of RST via pin RSTIN

Specialized Applications

• IC card readers for banking
• Electronic payment systems
• Identification devices
• Pay TV equipment

Specialized Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm package type matches TSSOP28 specifications. Ensure handling procedures comply with electrostatic discharge standards due to device sensitivity. Check datasheet revisions for any functional updates prior to integration.

Specialized Selection Notes

Select this component when designing interfaces for asynchronous 3 V or 5 V smart cards requiring integrated power management and protection. Consider the TDA8024AT variant if external power-on reset threshold adjustment via resistor bridge is not required. Ensure system controller supports the necessary activation sequences and clock frequency divisions.

Specialized Part Context

The TDA8024 series serves as a standard smart card interface solution. The TDA8024AT is a direct replacement for the older TDA8004AT model. This specific TT variant denotes a TSSOP28 plastic thin shrink small outline package with gold wires, differing from the SO28 plastic small outline package found in other series members.

Specialized Replacement Considerations

The TDA8024AT is documented as a direct replacement for the TDA8004AT. Verify compatibility regarding the PORADJ pin functionality, as it is not connected in the AT variant.