Smart Card Interface

The DS8023 smart card interface IC is a low-cost, low-power, analog front-end for a smart card reader designed for all ISO 7816, EMV*, and GSM11-11 applications. The DS8023 supports 5V, 3V, and 1.8V smart cards, and provides an option for ultra-low stop-mode power consumption. The DS8023 is available in 28-pin TSSOP and SO packages, and can often be used as a replacement for the TDA8024 with little or no application changes.

The DS8023 is designed to interface between a system microcontroller and the smart card interface, providing all power supply, protection, and level shifting required for IC card applications.

Applications

* Access Control * Automated Teller Machines * Banking Applications * Debit/Credit Payment Terminals * Pay/Premium Television * PIN Pads * POS Terminals * Set-Top Box Conditional Access * Telecommunications

* Analog Interface and Level Shifting for IC Card Communication

* ±8kV (min) ESD (IEC) Protection on Card Interface Pins

* Ultra-Low Stop-Mode Current, Less Than 10nA (typ)

* Internal IC Card-Supply Voltage Generation

* 5.0V ±5%, 80mA (max)

* 3.0V ±8%, 65mA (max)

* 1.8V ±10%, 30mA (max)

* Automatic Card Activation and Deactivation Controlled by Dedicated Internal Sequencer

* I/O Lines from Host Directly Level Shifted for Smart Card Communication

* Flexible Card Clock Generation, Supporting External Crystal Frequency Divided by 1, 2, 4, or 8

* High-Current/Short-Circuit and High-Temperature Protection