MAXIM DS8313, DS8314 Technical data
General Description
The DS8313 smart card and SIM interface IC is a lowcost, 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 sockets without hardware changes.
The DS8313L and DS8314L use a negative polarity-presence 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
DS8313/DS8314
Smart Card Interface
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-4655; Rev 1; 5/09
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.
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
.
DS8313/DS8314
Smart Card Interface
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED DC OPERATING CONDITIONS
(VDD= +3.3V, V
DDA
= +5.0V, TA= +25°C, unless otherwise noted. All specifications apply to both the DS8313 and DS8314, unless
otherwise noted in the CONDITIONS column.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltage Range on VDDRelative to GND ...............-0.5V to +6.5V
Voltage Range on V
DDA
Relative to GND .............-0.5V to +6.5V
Voltage Range on All Other Pins
Relative to GND......................................-0.5V to (V
DD
+ 0.5V)
Maximum Junction Temperature .....................................+125°C
Maximum Power Dissipation (T
A
= -25°C to +85°C) .......700mW
Storage Temperature Range .............................-55°C to +150°C
Soldering Temperature.........Refer to the IPC/JEDEC J-STD-020
Specification.
POWER SUPPLY
Digital Supply Voltage VDD 2.7 6.0 V
Card Voltage-Generator Supply Voltage V
Reset Voltage Thresholds
CURRENT CONSUMPTION
Active VDD Current 5V Cards
(Including 80mA Draw from 5V Card)
Active VDD Current 5V Cards (Current
Consumed by DS8313/DS8314 Only)
Active VDD Current 3V Cards
(Including 65mA Draw from 3V Card)
Active VDD Current 3V Cards (Current
Consumed by DS8313/DS8314 Only)
Active VDD Current 1.8V Cards
(Including 30mA Draw from 1.8V Card)
Active VDD Current 1.8V Cards (Current
Consumed by DS8313/DS8314 Only)
Inactive-Mode Current I
Stop-Mode Current I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DS8313, DS8314 4.75 6.0 V
DDA
V
Threshold voltage (fall ing) 2.35 2.45 2.65 V
TH2
Hy steres is 50 100 150 mV
V
HYS2
I
DD_50V
I
DD_IC
I
DD_30V
I
DD_IC
I
DD_18V
I
DD_IC
DD
DD_STOP
ICC = 80mA, f
f
= 10MHz, V
CLK
ICC = 80mA, f
f
= 10MHz, V
CLK
ICC = 65mA, f
= 10MHz, V
f
CLK
ICC = 65mA, f
= 10MHz, V
f
CLK
ICC = 30mA, f
= 10MHz, V
f
CLK
ICC = 30mA, f
= 10MHz, V
f
CLK
Card inactive, active-high PRES,
DS8313/DS8314 not in stop mode
= 20MH z,
XTAL
DDA
= 20MHz,
XTAL
= 5.0V (Note 2)
DDA
= 20MH z,
XTAL
DDA
= 20MHz,
XTAL
= 5.0V (Note 2)
DDA
= 20MH z,
XTAL
DDA
= 20MHz,
XTAL
= 5.0V (Note 2)
DDA
= 5.0V
= 5.0V
= 5.0V
80.75 85 mA
0.75 5 mA
65.75 70 mA
0.75 5 mA
30.75 40 mA
0.75 5 mA
50 40 μA
DS8313/DS8314 in ultra-low-power
stop mode (CMDVCC, 5V/3V, and
10 μA
1_8V set to logic 1) (Note 3)
DS8313/DS8314
Smart Card Interface
_______________________________________________________________________________________ 3
RECOMMENDED DC OPERATING CONDITIONS (continued)
(VDD= +3.3V, V
DDA
= +5.0V, TA= +25°C, unless otherwise noted. All specifications apply to both the DS8313 and DS8314, unless
otherwise noted in the CONDITIONS column.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CLOCK SOURCE
Crystal Frequenc y f
XTAL1 Operating Conditions
External Capacitance for Crystal
Internal Oscillator f
External crystal (Note 1) 0 20 MHz
XTAL
f
XTAL1
V
IL_XTAL1
V
IH_XTAL1
C
XTAL1
C
XTAL2
INT
(Note 1) 0 20 MHz
Low-level input on XTAL1 -0.3
High-level input on XTAL1
,
15 pF
0.7 x
V
DD
0.3 x
V
DD
VDD +
0.3
2.2 2.7 3.4 MHz
V
SHUTDOWN TEMPERATURE
Shutdown Temperature TSD +150 °C
RST PIN
Card-Inactive Mode
Card-Active Mode
Output Low Voltage V
Output Current I
Output Low Voltage V
Output High
Voltage
V
Rise Time t
Fal l Time t
Current Limitation I
RSTIN to RS T Delay t
RST(LIMIT)
D(RSTIN-RST)
OL_RST1
I
OL_RST1
V
I
OL_RST2
I
OH_RST2
CL= 30pF (Note 1) 0.1 μs
R_RST
CL= 30pF (Note 1) 0.1 μs
F_RST
= 1mA 0 0.3 V
OL_RST
= 0 0 -1 mA
OL_RST
= 200μA 0 0.3 V
OL_RST
V
-
OH_RST
= -200μA
CC
0.5
V
-20 +20 mA
2 μs
V
CC
CLK P IN
Card-Inactive Mode
Card-Active Mode
Output Low Voltage V
Output Current I
Output Low Voltage V
Output High
Voltage
Rise Time t
Fal l Time t
Current Limitation I
Cloc k Frequency f
OL_CLK1 IOLCLK
V
OL_CLK1
I
OL_CLK2
V
OH_CLK2 IOHCLK
CL= 30pF (Notes 1, 4) 8 ns
R_CLK
CL= 30pF (Notes 1, 4) 8 ns
F_CLK
CLK(LIMIT)
-70 +70 mA
Operational 0 10 MHz
CLK
Duty Factor C
Slew Rate SR C
= 1mA 0 0.3 V
= 0 0 -1 mA
OLCLK
= 200μA 0 0.3 V
OLCLK
V
-
= -200μA
= 30pF 45 55 %
L
= 30pF (Note 1) 0.2 V/ns
L
CC
0.5
V
V
CC
VCC PIN
Card-Inactive Mode
Output Low Voltage V
Output Current I
I
CC1
VCC = 0 0 -1 mA
CC1
= 1mA 0 0.3 V
CC
DS8313/DS8314
Smart Card Interface
4 _______________________________________________________________________________________
RECOMMENDED DC OPERATING CONDITIONS (continued)
(VDD= +3.3V, V
DDA
= +5.0V, TA= +25°C, unless otherwise noted. All specifications apply to both the DS8313 and DS8314, unless
otherwise noted in the CONDITIONS column.) (Note 1)
Card-Active Mode
DATA LINES (I/O AND I/OIN)
I/O I/OIN Falling Edge Delay t
Pullup Pulse Active Time tPU (Note 1) 100 ns
Maximum Frequency f
Input Capacitance CI 10 pF
I/O PIN
Card-Inactive Mode
Card-Active Mode
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Low Voltage V
CC2
DS8313: I
= 4.75V (Note 1)
V
DDA
DS8313: I
DS8313: I
DS8313: I
DS8314: 65mA < I
DS8314: I
DS8314: I
DS8314: I
< 80mA,
CC(5V)
< 65mA 4.75 5 5.25
CC(5V)
< 65mA 2.78 3 3.24
CC(3V)
CC(1. 8V)
CC(5V)
CC(3V)
CC(1. 8V)
< 30mA 1.64 1.8 1.98
< 80mA 4.55 5 5.25
CC(5V)
< 65mA 4.75 5 5.25
< 65mA 2.78 3 3.24
< 30mA 1.64 1.8 1.98
4.65 5 5.25
V
5V card; current pulses of 40nC
with I < 200mA, t < 400ns,
4.6 5.4
f < 20MHz
3V card; current pulses of 24nC
with I < 200mA, t < 400ns,
2.75 3.25
f < 20MHz
1.8V card; current pulses of 12nC
with I < 200mA, t < 400ns,
1.62 1.98
f < 20MHz
Output Current I
Shutdown Current
Threshold
Slew Rate V
D(IO-I OIN)
Output Low Voltage V
Output Current I
Internal Pul lup
Resistor
Output Low Voltage V
Voltage
V
Output Rise/Fall
Time
Input Low Voltage V
Input High Voltage V
V
CC2
V
V
I
CC(SD)
CCSR
(Note 1) 120 mA
Up/down; C < 300nF (Note 5) 0.05 0.16 0.22 V/μs
(Note 1) 200 ns
1 MHz
IOMAX
I
OL_IO1
V
OL_I O1
R
To VCC 9 11 19 k
PU_I O
OL_IO2 IOL_I O
OH_IO2
t
OT
IL_IO
IH_IO
I
I
CL= 30pF (Note 1) 0.1 μs
-0.3 +0.8
1.5 V
= 0 to 5V -80
CC(5V)
= 0 to 3V -65
CC(3V)
CC(1.8V)
OL_I O
OL_IO
= 0 to 1.8V -30
= 1mA 0 0.3 V
= 0 0 -1 mA
= 1mA 0 0.3 V
= < -20μA 0.8 x VCC V
OH_IO
= < -40μA (3V/5V) 0.75 x VCC V
OH_IO
CCOutput High
CC
CC
mA
V
V
DS8313/DS8314
Smart Card Interface
_______________________________________________________________________________________ 5
RECOMMENDED DC OPERATING CONDITIONS (continued)
(VDD= +3.3V, V
DDA
= +5.0V, TA= +25°C, unless otherwise noted. All specifications apply to both the DS8313 and DS8314, unless
otherwise noted in the CONDITIONS column.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Card-Active Mode
Input Low Current I
Input High Current I
IL_IO
IH_IO
Input Rise/Fall Time tIT 1.2 μs
Current Limitation I
Current When
Pullup Active
IO(LIMIT)
I
PU
V
= 0 600 μA
IL_IO
V
= VCC 20 μA
IH_IO
CL= 30pF -15 +15 mA
CL= 80pF, VOH = 0.9 x VDD -1 mA
I/OIN PIN
Output Low Voltage VOL IOL = 1mA 0 0.3 V
Output High Voltage VOH IOH < -40μA
0.75 x
V
DD
VDD +
0.1
V
Output Rise/Fall Time tOT CL= 30pF, 10% to 90% 0.1 μs
Input Low Voltage VIL -0.3
Input High Voltage V
Input Low Current I
Input High Current I
Input Ri se/Fall Time tIT V
IH
VIL = 0 600 μA
IL_IO
VIH = VDD 10 μA
IH_IO
to VIH 1.2 μs
IL
0.7 x
V
DD
0.3 x
V
DD
VDD +
0.3
V
V
Integrated Pullup Res istor RPU Pullup to VDD 9 11 13 k
Current When Pul lup Active IPU CL= 30pF, VOH = 0.9 x VDD -1 mA
CONTROL PINS (CLKDIV1, CLKDIV2, CMDVCC, RSTIN, 5V/3V, 1_8V)
Input Low Voltage V
Input High Voltage V
Input Low Current I
Input High Current I
IH_IO
IL
IH
IL_IO
-0.3
0.7 x
V
DD
0 < VIL < VDD 5 μA
0 < VIH < VDD 5 μA
0.3 x
V
DD
VDD +
0.3
V
V
INTERRUPT OUTPUT PIN (OFF)
Output Low Voltage VOL IOL = 2mA 0 0.3 V
Output High Voltage VOH IOH = -15μA
0.75 x
V
DD
V
Integrated Pullup Res istor RPU Pullup to VDD 16 24 32 k
PRES PIN
Input Low Voltage V
Input High Voltage V
IL_PRES
IH_PRES
0.7 x
V
DD
0.3 x
V
DD
V
V
DS8313/DS8314
Smart Card Interface
6 _______________________________________________________________________________________
RECOMMENDED DC OPERATING CONDITIONS (continued)
(VDD= +3.3V, V
DDA
= +5.0V, TA= +25°C, unless otherwise noted. All specifications apply to both the DS8313 and DS8314, unless
otherwise noted in the CONDITIONS column.) (Note 1)
Note 1: Operation guaranteed at -40°C and +85°C but not tested.
Note 2: I
DD_IC
measures the amount of current used by the DS8313 to provide the smart card current minus the load.
Note 3: Stop mode is enabled by setting CMDVCC, 5V/3V, and 1_8V to a logic-high.
Note 4: Parameters are guaranteed to meet all ISO 7816, GSM11-11, and EMV 2000 requirements. For the 1.8V card, the maximum
rise and fall time is 10ns.
Note 5: Parameter is guaranteed to meet all ISO 7816, GSM11-11, and EMV 2000 requirements. For the 1.8V card, the minimum
slew rate is 0.05V/µs and the maximum slew rate is 0.5V/µs.
Input Low Current I
Input High Current I
TIMING
Activation Time t
Deactivation Time t
CLK to Card Start
Time
PRES Debounce Time t
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
IL_PRES
IH_PRES
ACT
DEACT
Window Start t3 50 130
Window End t
5
DEB OUNCE
V
V
50 220 μs
50 80 100 μs
140 220
5 8 11 ms
= 0 5 μA
IL_PR ES
= VDD 10 μA
IH_PRES
μs
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