TDA8034HN/C2QL

Specialized Overview

The TDA8034HN/C2QL is a low-power smart card interface IC designed for asynchronous and synchronous contact cards. It operates with supply voltages of 5 V, 3 V, or 1.8 V, regulated via an internal LDO. The device provides three protected half-duplex bidirectional buffered I/O lines (C4, C7, C8) and supports clock frequencies up to 20 MHz using external crystals or clocks up to 26 MHz. Key electrical parameters include a maximum supply current of 65 mA in active mode and deep shutdown currents as low as 12 µA. It features enhanced ESD protection exceeding 8 kV, thermal and short-circuit protection, and built-in debouncing for card presence detection.

Specialized Feature Summary

• Provides complete analog interface functions between the smart card and microcontroller with minimal external components.
• Includes integrated voltage regulation, power-on reset supervision, and automatic activation/deactivation sequences.
• Features enhanced electrostatic discharge protection on card contacts and comprehensive fault detection mechanisms.

Specialized Applications

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

Specialized Procurement Notes

Verify that the specific ordering suffix matches the required EMVCo compliance version. Confirm package type HVQFN24 availability through authorized distributors. Ensure component authenticity by checking manufacturer markings against official datasheet specifications before integration into production.

Specialized Selection Notes

Select this component when designing contact smart card readers requiring ISO 7816 compatibility. Choose the C2 version specifically if EMVCo 4.3 compliance is mandatory for the application. Evaluate power consumption requirements to determine if Deep Shutdown mode meets system standby constraints.

Specialized Part Context

This part belongs to NXP's TDA8034HN series of smart card interfaces. The C2 variant is functionally identical to the C1 version but ensures compliance with EMVCo 4.3 standards. It serves as a cost-effective solution for managing power, protection, and control signals in contact-based card reading applications.

Specialized Replacement Considerations

The ST8034HC is a compatible alternative offering similar functionality. Verify pinout compatibility and software register alignment before substitution. Ensure the replacement supports the required EMVCo standard and operating voltage ranges for the target application.