TDA8034HN
Overview
The TDA8034HN is a cost-effective analog interface for asynchronous and synchronous smart cards operating at 5 V, 3 V or 1.8 V. Using few external components, the TDA8034HN provides all supply, protection and control functions between a smart card and the microcontroller.
- Integrated circuit smart card interface in an HVQFN24 package
- 5 V, 3 V or 1.8 V smart card supply
- Very low power consumption in Deep Shutdown mode
- Three protected half-duplex bidirectional buffered I/O lines (C4, C7 and C8)
- VCC regulation:; 5 V, 3 V or 1.8 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 deactivation sequences triggered by a short-circuit, card take-off, overheating, falling VDD, VDD(INTF) or VDDP
- Enhanced card-side ElectroStatic Discharge (ESD) protection of > 8 kV
- External clock input up to 26 MHz connected to pin XTAL1
- Card clock generation up to 20 MHz using pins CLKDIV1 and CLKDIV2 with synchronous frequency changes of fxtal, 1⁄2 fxtal, 1⁄4 fxtal or 1⁄8 fxtal
