DESCRIPTION
The Teridian 73S8023C is a low-power, high efficiency, single smart card interface IC suitable for 3V and 5V cards. It provides full electrical compliance with ISO-7816-3 and EMV 4.0 (EMV2000) specifications.
   
FEATURES
• Card Interface:
    ▪ Complies with ISO-7816-3, EMV 4.0
    ▪ A DC-DC Converter provides 3V / 5V to the card
        from an external power supply input
    ▪ High-efficiency converter: > 80% @ VDD=3.3 V,
        VCC=5 V and ICC= 65 mA
    ▪ Up to 100 mA supplied to the card
    ▪ ISO-7816-3 Activation / Deactivation sequencer
        with emergency automated deactivation
    ▪ Protection includes 2 voltage supervisors which
        detect voltage drops on card VCC and on VDD
        power supply
    ▪ The VDD voltage supervisor threshold value can be
        externally adjusted
    ▪ True over-current detection (150 mA max.)
    ▪ 2 card detection inputs, 1 for either possible switch
        configuration
    ▪ Full support of synchronous cards
• System Controller Interface:
    ▪ 3 Digital inputs control the card activation /
        deactivation, card reset and card voltage
    ▪ 3 Digital inputs control the card clock (division rate
        and card clock source selection)
    ▪ 1 Digital output, interrupt to the system controller,
        allows the system controller to monitor the card
        presence and faults
    ▪ 1 Power down digital input (places the 73S8023C
        in a very low-power mode (card deactivated)
    ▪ 1 Chip select digital input for parallel operation of
        several 73S8023C ICs.
    ▪ 1 External clock input (STROBE), used for
        synchronous operation
    ▪ 1 Digital output clock, buffered version of signal on
        XTALIN
    ▪ Crystal oscillator or host clock (XTALIN), up to
        27 MHz   
• Power Supply: VDD 2.7 V to 3.6 V
• 6 kV ESD Protection on the card interface
   
APPLICATIONS
• Point of Sales and Transaction Terminals
• Payphones
• Set-Top-Boxes, DVD / HDD Recorders
• Payment card interfaces in portable devices (PDAs,
    mobile phones…)