19-4655; Rev 1; 5/09
Smart Card Interface
/DS8314
General Description
Features
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.
♦ Analog Interface and Level Shifting for IC Card
Communication
♦ ±±8k ꢀminꢁ ꢂSꢃ ꢀ(HBꢁ ꢄrotection on Card Interfaceꢅ
♦ Ultra-Low Stop-Bode Current, Leꢅꢅ Than 10nA
Typical
♦ Internal IC Card Supply-koltage Generation
5.0k ±5ꢆ, ±0mA ꢀmaꢇꢁ
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.
3.0k ±±ꢆ, ꢈ5mA ꢀmaꢇꢁ
1.±k ±10ꢆ, 30mA ꢀmaꢇꢁ
♦ Automatic Card Activation and ꢃeactivation
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.
Controlled by ꢃedicated Internal Sequencer
♦ I/O Lineꢅ from (oꢅt ꢃirectly Level Shifted for
Smart Card Communication
♦ Fleꢇible Card Cloc8 Generation, Supporting
ꢂꢇternal Cryꢅtal Frequency ꢃivided by 1, 2, 4, or ±
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.
♦ (igh-Current, Short-Circuit and (igh-Temperature
ꢄrotection
♦ Low Active-Bode Current
Applications
Pay/Premium Television
Access Control
Ordering Information
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 SO
Banking Applications
DS8313-RRX+
DS8313L-RRX+*
DS8314-RRX+*
DS8314L-RRX+*
28 SO
POS Terminals
28 SO
Debit/Credit Payment Terminals
PIN Pads
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.
Automated Teller Machines
Telecommunications
Typical Application Circuit, ꢄin Configuration, and Selector
Guide appear at end of data ꢅheet.
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.maꢇim-ic.com/errata.
________________________________________________________________ Baꢇim Integrated ꢄroductꢅ
1
For pricing, delivery, and ordering information, pleaꢅe contact Baꢇim ꢃirect at 1-±±±-ꢈ29-4ꢈ42,
or viꢅit Baꢇim’ꢅ webꢅite at www.maꢇim-ic.com.