19-6220; Rev 2; 2/12
Smart Card Interface
General Description
The DS8024 smart card interface IC is a low-cost, analog
front-end for a smart card reader, designed for all ISO
7816, EMV
®
, and GSM11-11 applications. The DS8024
is a pin-for-pin drop-in replacement for the NXP
TDA8024 and is offered in 28-pin TSSOP and SO pack-
ages.
Applications requiring support for 1.8V smart cards or
requiring low power should consider the DS8113, which
achieves lower active- and stop-mode power with mini-
mal changes to application hardware and software.
Features
o
Analog Interface and Level Shifting for IC Card
Communication
o
±8kV (min) ESD (IEC) Protection on Card
Interfaces
o
Internal IC Card Supply-Voltage Generation:
5.0V ±5%, 80mA (max)
3.0V ±8%, 65mA (max)
o
Automatic Card Activation and Deactivation
Controlled by Dedicated Internal Sequencer
o
I/O Lines from Host Directly Level Shifted for
Smart Card Communication
o
Flexible Card Clock Generation, Supporting
External Crystal Frequency Divided by 1, 2, 4, or 8
o
High-Current, Short-Circuit and High-Temperature
Protection
DS8024
Applications
Set-Top Box Conditional Access
Access Control
Banking Applications
POS Terminals
Debit/Credit Payment Terminals
PIN Pads
Automated Teller Machines
Telecommunications
Pay/Premium Television
Pin Configuration
TOP VIEW
CLKDIV1 1
CLKDIV2 2
5V/3V 3
PGND 4
CP2 5
V
DDA
6
CP1 7
V
UP
8
PRES 9
PRES 10
I/O 11
AUX2 12
AUX1 13
CGND 14
28 AUX2IN
27 AUX1IN
26 I/OIN
25 XTAL2
24 XTAL1
Ordering Information
PART
DS8024-RJX+
DS8024-RJX/V+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 TSSOP
28 TSSOP
DS8024-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.
/V denotes an automotive-qualified part.
DS8024
23 OFF
22 GND
21 V
DD
20 RSTIN
19 CMDVCC
18 N.C.
17 V
CC
16 RST
15 CLK
Selector Guide appears at end of data sheet.
SO/TSSOP
EMV is a registered trademark of EMVCo LLC. EMV Level 1 library and hardware reference design available. Contact factory for
details.
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.
________________________________________________________________
Maxim Integrated Products
1
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.
Smart Card Interface
DS8024
ABSOLUTE MAXIMUM RATINGS
Voltage Range on V
DD
Relative to GND ...............-0.5V to +6.5V
Voltage Range on V
DDA
Relative to PGND ...........-0.5V to +6.5V
Voltage Range on CP1, CP2, and V
UP
Relative to PGND...............................................-0.5V to +7.5V
Voltage Range on All Other Pins
Relative to GND......................................-0.5V to (V
DD
+ 0.5V)
Maximum Junction Temperature .....................................+125°C
Continuous Power Dissipation (multilayer board, T
A
= +70°C)
TSSOP (derate 14mW/°C above +70°C) .................1117.3mW
SO (derate 16.7mW/°C above +70°C) .....................1355.9mW
Storage Temperature Range .............................-55°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
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.
RECOMMENDED DC OPERATING CONDITIONS
(V
DD
= +3.3V, V
DDA
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
POWER SUPPLY
Digital Supply Voltage
Card Voltage-Generator Supply Voltage
Reset Voltage Thresholds
CURRENT CONSUMPTION
Active V
DD
Current 5V Cards
(Including 80mA Draw from 5V Card)
Active V
DD
Current 5V Cards
(Current Consumed by DS8024 Only)
Active V
DD
Current 3V Cards
(Including 65mA Draw from 3V Card)
Active V
DD
Current 3V Cards
(Current Consumed by DS8024 Only)
Inactive-Mode Current
CLOCK SOURCE
Crystal Frequency
f
XTAL
f
XTAL1
XTAL1 Operating Conditions
V
IL_XTAL1
V
IH_XTAL1
External Capacitance for Crystal
Internal Oscillator
SHUTDOWN TEMPERATURE
Shutdown Temperature
T
SD
(Note 3)
+150
°C
C
XTAL1
,
C
XTAL2
f
INT
Low-level input on XTAL1 (Note 3)
High-level input on XTAL1 (Note 3)
(Note 3)
2.7
External crystal
0
0
-0.3
0.7 x
V
DD
20
20
0.3 x
V
DD
V
DD
+
0.3
15
pF
MHz
MHz
MHz
I
DD_50V
I
DD_IC
I
DD_30V
I
DD_IC
I
DD
I
CC
= 80mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V
I
CC
= 80mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V (Note 2)
I
CC
= 65mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V
I
CC
= 65mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V (Note 2)
Card inactive
215
135
100
35
500
mA
mA
mA
mA
µA
V
DD
V
DDA
V
TH2
V
HYS2
V
CC
=
5V,
|I
CC
|
< 80mA
V
CC
=
5V,
|I
CC
|
< 30mA
Threshold voltage (falling)
Hysteresis
2.7
4.0
3.0
2.30
50
2.45
100
6.0
6.0
6.0
2.60
150
V
V
V
mV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
2
_______________________________________________________________________________________
Smart Card Interface
RECOMMENDED DC OPERATING CONDITIONS (continued)
(V
DD
= +3.3V, V
DDA
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
RST PIN
Card-Inactive Mode
Output Low Voltage
Output Current
Output Low Voltage
Output High
Voltage
Rise Time
Card-Active Mode
Fall Time
Shutdown Current
Threshold
Current Limitation
RSTIN to RST Delay
CLK PIN
Card-Inactive Mode
Output Low Voltage
Output Current
Output Low Voltage
Output High
Voltage
Rise Time
Card-Active Mode
Fall Time
Current Limitation
Clock Frequency
Duty Factor
Slew Rate
V
CC
PIN
Card-Inactive Mode
Output Low Voltage
Output Current
V
CC1
I
CC1
I
CC
= 1mA
V
CC
= 0V
I
CC(5V)
< 80mA
I
CC(3V)
< 65mA
Output Low Voltage
V
CC2
5V card: current pulses of 40nC
with I < 200mA, t < 400ns,
f < 20MHz (Note 3)
3V card: current pulses of 24nC
with I < 200mA, t < 400ns,
f < 20MHz (Note 3)
Output Current
Shutdown Current
Threshold
Slew Rate
I
CC2
I
CC(SD)
V
CCSR
Up/down, C < 300nF
0.05
V
CC(5V)
= 0 to 5V
V
CC(3V)
= 0 to 3V
120
0.16
0.22
0
0
4.75
2.78
4.6
5.00
3.00
0.3
-1
5.25
3.22
5.4
V
V
mA
SR
V
OL_CLK1
I
OL_CLK1
V
OL_CLK2
V
OH_CLK2
t
R_CLK
t
F_CLK
I
CLK(LIMIT)
f
CLK
Operational (Note 3)
C
L
= 30pF (Note 3)
C
L
= 30pF (Note 3)
I
OLCLK
= 1mA
V
OLCLK
= 0V
I
OLCLK
= 200µA
I
OHCLK
= -200µA
C
L
= 30pF (Note 3)
C
L
= 30pF (Note 3)
-70
0
45
0.2
0
0
0
V
CC
-
0.5
0.3
-1
0.3
V
CC
8
8
+70
10
55
V
mA
V
V
ns
ns
mA
MHz
%
V/ns
V
OL_RST1
I
OL_RST1
V
OL_RST2
V
OH_RST2
t
R_RST
t
F_RST
I
RST(SD)
I
RST(LIMIT)
t
D(RSTIN-RST)
-20
I
OL_RST
= 1mA
V
O_LRST
= 0V
I
OL_RST
= 200µA
I
OH_RST
= -200µA
C
L
= 30pF (Note 3)
C
L
= 30pF (Note 3)
-20
+20
2
0
0
0
V
CC
-
0.5
0.3
-1
0.3
V
CC
0.1
0.1
V
mA
V
V
µs
µs
mA
mA
µs
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DS8024
Card-Active Mode
2.75
3.25
-80
-65
mA
mA
V/µs
_______________________________________________________________________________________
3
Smart Card Interface
DS8024
RECOMMENDED DC OPERATING CONDITIONS (continued)
(V
DD
= +3.3V, V
DDA
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
DATA LINES (I/O AND I/OIN)
I/O
I/OIN Falling Edge Delay
t
D(IO-IOIN)
t
PU
f
IOMAX
C
I
Output Low Voltage
Card-Inactive Mode
Output Current
Internal Pullup
Resistor
Output Low Voltage
Output High
Voltage
Output Rise/Fall
Time
Input Low Voltage
Card-Active Mode
Input High Voltage
Input Low Current
Input High Current
Input Rise/Fall Time
Current Limitation
Current When
Pullup Active
I/OIN, AUX1IN, AUX2IN PINS
Output Low Voltage
Output High Voltage
Output Rise/Fall Time
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Input Rise/Fall Time
Integrated Pullup Resistor
Current When Pullup Active
V
OL
V
OH
t
OT
V
IL
V
IH
I
IL_IO
I
IH_IO
t
IT
R
PU
I
PU
V
IL
= 0V
V
IH
= V
DD
V
IL
to V
IH
(Note 3)
Pullup to V
DD
C
L
= 30pF, V
OH
= 0.9 x V
DD
(Note 3)
9
-1
11
I
OL
= 1mA
I
OH
< -40µA
C
L
= 30pF, 10% to 90% (Note 3)
-0.3
0.7 x
V
DD
0
0.75 x
V
DD
0.3
V
DD
+
0.1
0.1
0.3 x
V
DD
V
DD
+
0.3
600
10
1.2
13
V
V
µs
V
V
µA
µA
µs
k
mA
V
OL_IO1
I
OL_IO1
R
PU_IO
V
OL_IO2
V
OH_IO2
t
OT
V
IL_IO
V
IH_IO
I
IL_IO
I
IH_IO
t
IT
I
IO(LIMIT)
I
PU
V
IL_IO
= 0V
V
IH_IO
= V
CC
(Note 3)
C
L
= 30pF
C
L
= 80pF, V
OH
= 0.9 x V
DD
(Note 3)
-15
-1
(Note 3)
I
OL_IO
= 1mA
V
OL_IO
= 0V
To V
CC
I
OL_IO
= 1mA
I
OH_IO
= < -40µA (3V/5V)
C
L
= 30pF (Note 3)
-0.3
1.5
0
0
9
0
0.75 x V
CC
11
(Note 3)
(Note 3)
200
100
1
10
0.3
-1
19
0.3
V
CC
0.1
+0.8
V
CC
700
20
1.2
+15
ns
ns
MHz
pF
V
mA
k
V
V
µs
V
µA
µA
µs
mA
mA
Pullup Pulse Active Time
Maximum Frequency
Input Capacitance
I/O, AUX1, AUX2 PINS
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
4
_______________________________________________________________________________________
Smart Card Interface
RECOMMENDED DC OPERATING CONDITIONS (continued)
(V
DD
= +3.3V, V
DDA
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
0.3 x
V
DD
V
DD
+
0.3
5
5
50
0
0.75 x
V
DD
12
20
28
0.3 x
V
DD
0.7 x
V
DD
V
IL_PRES
= 0V
V
IH_PRES
= V
DD
160
80
95
160
8
40
40
85
120
0.3
UNITS
CONTROL PINS (CLKDIV1, CLKDIV2,
CMDVCC,
RSTIN, 5V/3V)
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Integrated Pullup Resistor
INTERRUPT OUTPUT PIN (OFF)
Output Low Voltage
Output High Voltage
Integrated Pullup Resistor
PRES,
PRES
PINS
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
TIMING
Activation Time
Deactivation Time
CLK to Card Start
Time
Window Start
Window End
t
ACT
t
DEACT
t
3
t
5
t
DEBOUNCE
µs
µs
µs
ms
V
IL_PRES
V
IH_PRES
I
IL_PRES
I
IH_PRES
V
V
µA
µA
V
OL
V
OH
R
PU
I
OL
= 2mA
I
OH
= -15µA
Pullup to V
DD
V
V
k
V
IL
V
IH
I
IL_IO
I
IH_IO
R
PU
0 < V
IL
< V
DD
0 < V
IH
< V
DD
Pullup to V
DD
, 5V/3V only
-0.3
0.7 x
V
DD
V
V
µA
µA
k
DS8024
PRES/PRES Debounce Time
Note 1:
Operation guaranteed at T
A
= -40°C and T
A
= +85°C, but not tested.
Note 2:
IDD_IC measures the amount of current used by the DS8024 to provide the smart card current minus the load.
Note 3:
Guaranteed by design, but not production tested.
_______________________________________________________________________________________
5
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