Datasheet

DS8023
Smart Card Interface
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED DC OPERATING CONDITIONS
(V
DD
= +3.3V, V
DDA
= +5.0V, T
A
= +25°C, unless otherwise noted.) (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 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
Maximum Power Dissipation (T
A
= -40°C to +85°C) .......700mW
Storage Temperature Range .............................-55°C to +150°C
Soldering Temperature.........Refer to the IPC/JEDEC J-STD-020
Specification.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Digital Supply Voltage V
DD
2.7 6.0 V
V
CC
= 5V, |I
CC
| < 80mA 4.0 6.0
Card-Voltage-Generator Supply Voltage V
DDA
V
CC
= 5V, |I
CC
| < 30mA 3.0 6.0
V
V
TH2
Threshold voltage (falling) 2.30 2.45 2.60 V
Reset Voltage Thresholds
V
HYS2
Hysteresis 50 100 150 mV
CURRENT CONSUMPTION
Active V
DD
Current 5V Cards
(Including 80mA Draw from 5V Card)
I
DD_50V
I
CC
= 80mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V
215 mA
Active V
DD
Current 5V Cards
(Current Consumed by DS8023 Only)
I
DD_IC
I
CC
= 80mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V (Note 2)
135 mA
Active V
DD
Current 3V Cards
(Including 65mA Draw from 3V Card)
I
DD_30V
I
CC
= 65mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V
100 mA
Active V
DD
Current 3V Cards
(Current Consumed by DS8023 Only)
I
DD_IC
I
CC
= 65mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V (Note 2)
35 mA
Active V
DD
Current 1.8V Cards
(Including 30mA Draw from 1.8V Card)
I
DD_18V
I
CC
= 30mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V
70 mA
Active V
DD
Current 1.8V Cards
(Current Consumed by DS8023 Only)
I
DD_IC
I
CC
= 30mA, f
XTAL
= 20MHz,
f
CLK
= 10MHz, V
DDA
= 5.0V (Note 2)
35 mA
Inactive-Mode Current I
DD
Card inactive 500 μA
Stop-Mode Current I
DD_STOP
DS8023 in ultra-low-power stop
mode (Note 3)
10 nA
CLOCK SOURCE
Crystal Frequency f
XTAL
External crystal 0 20 MHz
f
XTAL1
0 20 MHz
V
IL_XTAL1
-0.3
0.3 x
V
DD
XTAL1 Operating Conditions
V
IH_XTAL1
0.7 x
V
DD
V
DD
+
0.3
V
External Capacitance for Crystal
C
XTAL1
,
C
XTAL2
15 pF
Internal Oscillator f
INT
2.7 MHz