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…)