TDA8034AT/C1,118

Specialized Overview

The TDA8034AT/C1,118 is a smart card interface IC in an SO16 package. It provides supply, protection, and control functions for asynchronous and synchronous smart cards operating at 5 V or 3 V. The device features one protected half-duplex bidirectional buffered I/O line (C7). It includes a voltage regulator delivering up to 65 mA with filtered overload detection of approximately 120 mA. Thermal and short-circuit protections are integrated for all card contacts. The chip supports external clock input up to 26 MHz and generates card clocks up to 20 MHz using pin CLKDIV1. It offers enhanced ESD protection exceeding 6 kV on the card side.

Specialized Feature Summary

• Integrated circuit smart card interface in an SO16 package
• One protected half-duplex bidirectional buffered I/O line (C7)
• Enhanced card-side ElectroStatic Discharge (ESD) protection of > 6 kV
• Compatible with ISO 7816, NDS and EMV 4.2 payment systems

Specialized Applications

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

Specialized Procurement Notes

Verify the component against the official NXP datasheet specifications before integration. Confirm that the SO16 package dimensions match the PCB footprint requirements. Ensure the ordering suffix corresponds to the correct tape and reel configuration if applicable. Cross-reference the manufacturing date code to ensure compliance with current environmental standards.

Specialized Selection Notes

Select this model when a single protected I/O line is sufficient for the target application. The TDA8034AT variant specifically allows the output clock frequency to match the input crystal frequency or be divided by two. Verify that the system power supplies fall within the specified ranges for VDDP, VDD, and VDD(INTF) during operation.

Specialized Part Context

This component belongs to the TDA8034 series of smart card interfaces manufactured by NXP Semiconductors. It serves as a cost-effective analog interface solution designed to bridge microcontrollers and smart cards. The AT variant distinguishes itself from the standard T model through its specific clock division capabilities relative to the external crystal input.

Specialized Replacement Considerations

TDA8034T/C1,118