DS8005 查看數據表（PDF） - Maxim Integrated

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DS8005

Smart Card Interface

Maxim Integrated 

DS8005

EVALUATION KIT AVAILABLE

Smart Card Interface

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 exclu-

sive 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 multi-

plexing 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 28-pin SO and TSSOP packag-

es. 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.

Applications

●● Set-Top Box Conditional Access

●● Telecommunications

●● Pay Television

●● Access Control

●● Financial Terminals

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

Ordering Information

PART

CARDVOLTAGES LOW POWER

SUPPORTED STOP MODE

DS8005-RRX+

1.8V, 3V, 5V

Yes

DS8005-RJX+

1.8V, 3V, 5V

Yes

+Denotes lead(Pb)-free/RoHS-compliant package.

LOW POWER

ACTIVE MODE

Yes

Yes

PRES_POLARITY TEMP RANGE

Positive

Positive

-40°C to +85°C

-40°C to +85°C

PIN-

PACKAGE

28 SO

28 TSSOP

Typical Application Circuit appears at end of data sheet.

EMV is a registered trademark of EMVCo LLC.

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be

simultaneously available through various sales channels. For information about device errata, go to: www.maximintegrated.com/errata.

19-5257; Rev 2; 9/17

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