Smart Card Interface ICs

General Description

The 73S8024C is a single smart card interface IC, compliant to the electrical requirements of ISO-7816-3, EMV 4.0 (EMV2000) and NDS1 electrical specifications. It can be used in conjunction with any host microcontroller that can support the smart card protocol layer. The 73S8024C interfaces with the host through a dedicated digital control bus, compatible with the industry-standard device TDA8004.

A key feature of the 73S8024C is its high-efficiency inductor-based DC-DC converter, which generates the smart card voltage (3V or 5V) from a low-voltage power supply source (2.7V to 3.6V), capable of supplying an ICC card current up to 100mA.


  • Card Interface
    Complies with ISO-7816-3 and EMV 4.0
    Provides at least 100mA to the card
    DC-DC Converter provides 3V/5V to the card from an external power supply input
    ISO-7816-3 Activation / Deactivation sequencer
    Emergency card deactivation upon hardware fault:
  • Card removal
  • Voltage supervision faults: Detection of voltage drops on VCC(card) and VPC power supply
  • Adjustable power supply (VDD) fault detection (2 resistors needed)
  • Card over-current (true current detection)
  • Die over-heating fault
    2 card detection inputs, 1 for each possible user polarity
    Auxiliary I/O lines, for C4 / C8 contact signals
  • System Controller Interface
    3 Digital inputs control the card activation / deactivation, card reset, card voltage and power down mode
    4 Digital inputs control the card clock (division rate and card clock stop modes)
    1 Digital output (interrupt output to the host for fault detection) allows the system controller to monitor the card presence
  • Power Supply
    2.7V to 3.6V
  • 6KV ESD Protection on the card interface
  • Package: S028