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. The device is provided in a 28-pin SO package. The pinout is backwards compatible with the DS8313, allowing applications to use the same footprint and PCB for applications that communicate with either one or two smart cards. The device is designed to be used with microcontrollers that contain an ISO 7816 UART, or have the bandwidth to run this protocol in software by bit-banging IO ports. If the microcontroller does not have the capability of running the ISO 7816 UART, the DS8007 is the more appropriate product selection.
The DS8005 is a low‑cost dual smart‑card interface designed for ISO 7816, EMV® and B‑CAS applications. It provides two mutually exclusive card interfaces, supports 1.8 V, 3 V and 5 V card voltages, and includes built‑in ESD protection and ultra‑low stop‑mode current.
The device is supplied in a 28‑pin SO package, compatible with the DS8313 footprint, and offers a full set of pin functions for clock, reset, data, and power management. Recommended operating conditions, absolute maximum ratings, and typical application circuits are provided for designers.
| Stop‑Mode Current | less than 10 nA |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Package Type | 28‑pin SO |
The DS8005 provides at least 8 kV of HBM ESD protection on each card interface.
It can communicate with two smart cards in a mutually exclusive fashion.