TDA8035HN/C1/S1QL

Specialized Overview

The TDA8035HN/C1/S1QL is a high-integrated, low-power smart card interface IC designed for contact readers. It 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. The device generates regulated card supply voltages of 5 V, 3 V, or 1.8 V via an internal DC-to-DC converter. Power consumption in deep shutdown mode is typically 3 µA. It supports clock frequencies up to 20 MHz and includes thermal protection, short-circuit detection, and enhanced ESD protection exceeding 8 kV.

Specialized Feature Summary

• Provides comprehensive protection for contact smart cards through thermal monitoring, short-circuit detection on all contacts, and enhanced electrostatic discharge resistance.
• Features a highly integrated DC-to-DC converter that generates regulated 5 V, 3 V, or 1.8 V card supplies from a single input voltage domain.
• Supports parallel operation of multiple devices via a dedicated Chip Select digital input and offers software compatibility with previous generations.

Specialized Applications

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

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and compliance standards. Ensure the component version matches the required EMV 4.3 standard if applicable. Cross-reference the part number with the latest datasheet revision to confirm availability and functional specifications before procurement.

Specialized Selection Notes

Select this component for applications requiring low power consumption and high integration in contact smart card readers. Ensure the host system can provide the necessary VDDP and VDD(INTF) voltages. Verify that the external capacitor values meet the ESR requirements for the DC-to-DC converter to ensure stable operation across the specified temperature range.

Specialized Part Context

The TDA8035 serves as a cost-efficient successor to the TDA8024 and TDA8034 series. It maintains software compatibility while offering improved power efficiency and enhanced security features. The device is housed in an HVQFN32 package, making it suitable for compact reader designs requiring robust interface capabilities.

Specialized Replacement Considerations

The TDA8035 is functionally compatible with the TDA8024 and TDA8034. When replacing these older models, verify that the PCB layout supports the HVQFN32 package dimensions and that the host firmware handles the specific control signals correctly.