The DS8024 is an analog front-end for communicating with 3V and 5V smart cards, designed for all ISO 7816, EMV, and GSM11-11 applications. Using an integrated charge pump, the DS8024 can operate from a single input voltage. The device translates all communication lines to the correct voltage level and provides power for smart card operation.
 

The DS8024 is compatible with the NXP TDA8024 and is provided in the same packages (28-pin TSSOP and SO). Note that the PORADJ pin is not present in the DS8024. Most applications do not make use of this pin, instead using the DS8024’s default reset threshold.

Comparing to competition DS8024 provide better ESD performance, (8kV (min) ESD (IEC) protection on card interfaces).

The internal charge pump and regulator generate 3V (up to 65mA) or 5V (up to 80mA) card supply voltage. An internal overload detector triggers around 120mA. Current samples to the detector are filtered. This allows spurious current pulses (with a duration of few microseconds) up to 200mA to be drawn without causing deactivation. Application reliability is assured from fault conditions monitor such as:

• Short-circuit or high current on Vcc
• Card removal while the interface is activated
• VDD dropping below threshold
• Card voltage generator operating out of the specified values
• Overheating

Typical applications for this device are Access Control, POS terminal, Set Top Box.