NXP TDA8034HN/C1,118

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/1s (VCC = 5 V and 3 V) or 15 nA/1s (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
• Non-inverted control of pin RST using pin RSTIN
• Compatible with ISO 7816, NDS and EMVCo 4.3 payment systems
• Supply supervisor for killing spikes during power on and off:
  • using a fixed threshold
  • using an external resistor bridge with threshold adjustment
• Built-in debouncing on card presence contacts (typically 8 ms)
• Multiplexed status signal using pin OFFN

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