TDA8035HN/C1/S1EL

Specialized Overview

The TDA8035HN/C1/S1EL is a high-integrated, low-power smart card interface IC manufactured by NXP Semiconductors. It serves as the successor to the TDA8024 and supports ISO 7816, NDS, and EMV 4.3 payment systems. The device operates with a VDDP supply voltage range of 2.7 V to 5.5 V and an interface supply (VDD(INTF)) of 1.6 V to 3.6 V. It features a DC-to-DC converter generating VCC at 5 V, 3 V, or 1.8 V. Key electrical parameters include a deep shutdown current of 0.1 µA, active mode currents up to 220 mA at 5 V, and total power dissipation of 0.45 W. The component is housed in an HVQFN32 package (SOT617-7) and functions within an ambient temperature range of -25 °C to +85 °C.

Specialized Feature Summary

• Provides thermal and short-circuit protection on all card contacts with enhanced ESD protection exceeding 8 kV.
• Includes a DC-to-DC converter for VCC generation separately powered from the main supply domain.
• Features three protected half-duplex bidirectional buffered I/O lines with internal pull-up resistors.
• Supports external clock input up to 26 MHz and generates card clock frequencies up to 20 MHz.

Specialized Applications

• Pay TV systems
• Electronic payment terminals
• Identification devices
• Banking IC card readers

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm compliance requirements. The C2 version is compliant with the EMVCO 4.3 standard, while other versions may differ. Ensure the selected variant matches the intended application standards before procurement.

Specialized Selection Notes

Select this component for applications requiring software compatibility with the TDA8024 and TDA8034. Consider the HVQFN32 package constraints and the need for external capacitors with low ESR for the DC-to-DC converter. Verify that the host system can support the required clock configurations and supply voltage domains.

Specialized Part Context

The TDA8035HN/C1/S1EL belongs to the TDA8035HN series of smart card interface ICs. It is designed as a cost-efficient replacement for the established TDA8024 reader IC. The device integrates multiple protection features and power management capabilities into a single compact package suitable for modern contact smart card readers.

Specialized Replacement Considerations

The TDA8035 is the direct successor to the TDA8024. It is also software compatible with the TDA8034. Designers migrating from older interfaces should verify pinout similarities and ensure firmware adjustments are made if necessary.