TDA8034HN/C1,157

Specialized Overview

The TDA8034HN/C1,157 is a low-power smart card interface IC designed for asynchronous and synchronous applications. It operates with supply voltages of 5 V, 3 V, or 1.8 V. The device provides power regulation, protection, and control functions between the smart card and microcontroller. Key electrical parameters include an active mode supply current of up to 2 mA and a deep shutdown current of 12 µA. The card supply voltage (VCC) ranges from 1.66 V to 5.25 V depending on the selected level. The maximum peak-to-peak ripple voltage is 350 mV. The total power dissipation is limited to 0.25 W within an ambient temperature range of -25 °C to +85 °C.

Specialized Feature Summary

• Integrated circuit smart card interface in an HVQFN24 package
• Three protected half-duplex bidirectional buffered I/O lines
• Enhanced card-side ElectroStatic Discharge (ESD) protection exceeding 8 kV
• Automatic activation and deactivation sequences triggered by fault conditions

Specialized Applications

• Pay TV systems
• Electronic payment terminals
• Identification readers
• Bank card readers

Specialized Procurement Notes

Verify the specific ordering suffix C1,157 against the manufacturer's official documentation to confirm compliance with ISO 7816 and NDS standards. Ensure that the procurement channel provides valid traceability for the HVQFN24 package variant. Cross-reference the part number with the latest product data sheet revision to confirm functional equivalence and availability status before finalizing orders.

Specialized Selection Notes

Select this component when designing interfaces requiring support for 5 V, 3 V, or 1.8 V smart cards with minimal external components. Consider the C1 version for standard compatibility or the C2 version if EMVCo 4.3 compliance is required. Evaluate the thermal resistance characteristics and package dimensions to ensure adequate heat dissipation and space constraints are met within the target application design.

Specialized Part Context

The TDA8034HN is manufactured by NXP Semiconductors as a cost-effective analog interface solution. It is available in two versions, C1 and C2, which share identical functionality but differ in specific protocol compliance levels. The device is housed in a plastic thermal enhanced very thin quad flat package with no leads, measuring 4 x 4 x 0.85 mm.

Specialized Replacement Considerations

Public confirmed substitute part numbers: ST8034HC.