Document
TDA8034T; TDA8034AT
Smart card interface
Rev. 3.1 — 13 December 2012
Product data sheet
1. General description
The TDA8034T/TDA8034AT is a cost-effective analog interface for asynchronous and synchronous smart cards operating at 5 V or 3 V. Using few external components, the TDA8034T/TDA8034AT provides all supply, protection and control functions between a smart card and the microcontroller.
2. Features and benefits
Integrated circuit smart card interface in an SO16 package 5 V or 3 V smart card supply One protected half-duplex bidirectional buffered I/O line (C7) VCC regulation:
5 V 5 % or 3 V 5 % using two low ESR multilayer ceramic capacitors: one of 220 nF and one of 470 nF
current spikes of 40 nA/s (VCC = 5 V and 3 V) or 15 nA/s (VCC =1.8 V) up to 20 MHz, with controlled rise and fall times and filtered overload detection of approximately 120 mA
Thermal and short-circuit protection for all card contacts Automatic activation and deactiva.