TDA8034HN/C2EL

Specialized Overview

The TDA8034HN/C2EL is a low-power smart card interface IC designed for asynchronous and synchronous contact smart cards. It supports supply voltages of 5 V, 3 V, or 1.8 V with ±5% regulation accuracy. The device provides three protected half-duplex bidirectional buffered I/O lines (C4, C7, C8) and generates card clock frequencies up to 20 MHz using an internal crystal oscillator or external clock input up to 26 MHz. It features enhanced ESD protection exceeding 8 kV, thermal and short-circuit protection for all contacts, and built-in debouncing for card presence detection. The component operates within an ambient temperature range of -25 °C to +85 °C.

Specialized Feature Summary

• Compliant with EMVCo 4.3 payment systems
• Integrated voltage supervisor with adjustable threshold via external resistor bridge
• Automatic activation and deactivation sequences triggered by hardware faults or software commands
• Multiplexed status signal output for microcontroller interrupt handling

Specialized Applications

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

Specialized Procurement Notes

Verify the ordering suffix matches the required specification version. The C2 variant ensures compliance with EMVCo 4.3 standards, whereas other versions may differ in protocol support. Confirm package type HVQFN24 availability and ensure the supplier provides original manufacturer documentation to validate authenticity before integration into production designs.

Specialized Selection Notes

Select this component when designing readers requiring strict adherence to EMVCo 4.3 protocols. Ensure the system controller can manage the specific activation/deactivation timing sequences defined in the datasheet. Verify that the external crystal frequency falls within the 2-26 MHz range if utilizing the internal oscillator, or confirm external clock compatibility if bypassing it.

Specialized Part Context

This part belongs to NXP's TDA8034 series of analog smart card interfaces. It serves as a cost-effective solution for managing power, protection, and control functions between a smart card and a microcontroller. The C2 version specifically addresses modern payment security requirements through its EMVCo 4.3 compliance.

Specialized Replacement Considerations

The TDA8034HN/C1 is functionally identical but lacks EMVCo 4.3 compliance. The ST8034HC is a pin-compatible alternative from STMicroelectronics offering similar functionality.