73S8009CN

73S8009CN www.DataSheet4U.com Combo ISO-7816 and USB Universal Smart Card Interface IC Simplifying System Integration™ DS_8009C_026 DATA SHEET August 2009 FEATURES DESCRIPTION The Teridian 73S8009CN is the world’s first single-chip smart card electrical interface circuit that supports all types of smart cards: 5V, 3V and 1.8V, including traditional ISO-7816-3 asynchronous and synchronous type 1 and type 2, as well as USB, ISO-7816-12 cards. The 73S8009CN is ideally suited for applications such as desktop computers, laptops and general purpose smart card readers that require low power operation from a single 2.7V to 6.5V power supply voltage source. A power down mode (“OFF” mode) is available and exhibits a 10nA typical current consumption. The circuit provides control, conversion and regulation of power for the smart card. In addition, the circuit provides a 3.3V-regulated voltage that is used as an internal digital supply voltage to the host interface. It is also made available to supply power to some external circuitry (a host controller for instance). For asynchronous and synchronous smart card operation, the signals for RST, CLK, I/O and auxiliary signals AUX1 and AUX2 are directly controlled from the host processor and are level-shifted by the circuit to the selected VCC value. For more design flexibility, the host processor is responsible for handling the signal timing for smart card activation and deactivation under normal conditions. The power management circuitry a...