General Description

The DS8005 dual smart card interface is a low-cost, dual analog front-end for an IC card reader interface that needs to communicate with two smart cards in a mutually exclusive fashion. The analog interface is designed for use in ISO 7816, EMV?, and B-CAS applications. The device is functionally similar to two DS8024s with external multiplexing to select the active interface, but also includes low power and 1.8V card support. Additionally, the device is designed for applications where the C4/C8 (AUX1/AUX2) contacts are not required on either card interface.

特性 Features

● Analog Interface and Level Shifting for IC Card Communication

● ±8kV (min) ESD (HBM) Protection on Card Interfaces

● Ultra-Low Stop-Mode Current, Less than 10nA Typical

● 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

● Low Active-Mode Current

● Internal Multiplexing Allows One ISO 7816 UART

● Implementation to Control Two Smart Card Sockets

Applications

● Set-Top Box Conditional Access

● Telecommunications

● Pay Television

● Access Control

● Financial Terminals