DS8313 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – Smart Card Interface

19-4655; Rev 1; 5/09
Smart Card Interface
General Description
The DS8313 smart card and SIM interface IC is a low-
cost, analog front-end for a smart card reader designed
for smart card applications that do not require the use
of the auxiliary card I/O contacts C4 and C8 (AUX1 and
AUX2). The DS8313 supports 5V, 3V, and 1.8V smart
cards. The absence of a charge pump reduces active
power consumption, and the DS8313 also supports an
ultra-low-power 10nA stop mode.
The DS8313 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.
The DS8314 is similar to the DS8313, but only uses one
analog (smart card) power supply. Therefore, the
device has reduced ability to provide power to smart
cards, but it is still sufficient for many applications,
allowing the DS8314 to drop into many TDA8024 sock-
ets without hardware changes.
The DS8313L and DS8314L use a negative polarity-pres-
ence detect instead of the default positive-polarity detect.
Both devices are available in a 28-pin SO package.
Applications
Pay/Premium Television
Access Control
Banking Applications
POS Terminals
Debit/Credit Payment Terminals
PIN Pads
Automated Teller Machines
Telecommunications
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
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS8313-RRX+
-40°C to +85°C
28 SO
DS8313L-RRX+* -40°C to +85°C
28 SO
DS8314-RRX+*
-40°C to +85°C
28 SO
DS8314L-RRX+* -40°C to +85°C
28 SO
Note: Contact the factory for availability of other variants and
package options.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future product—contact factory for availability.
Typical Application Circuit, Pin Configuration, and Selector
Guide appear at end of data sheet.
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.maxim-ic.com/errata.
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.