DS8005
Smart Card Interface
4 _______________________________________________________________________________________
RECOMMENDED DC OPERATING CONDITIONS (continued)
(V
DD
= +3.3V, V
DDA
= +5.0V, T
A
= +25°C, unless otherwise noted. All specifications apply to the device, unless otherwise noted in
the CONDITIONS column.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Device: I
CC(5V)
< 30mA,
V
DDA
= 4.75V (Note 1)
4.65 5 5.25
Device: I
CC(5V)
< 80mA 4.75 5 5.25
Device: I
CC(3V)
< 65mA 2.78 3 3.24
Device: I
CC(1.8V)
< 30mA 1.64 1.8 1.98
5V card; current pulses of 40nC
with I < 200mA, t < 400ns,
f < 20MHz
4.6 5.4
3V card; current pulses of 24nC
with I < 200mA, t < 400ns,
f < 20MHz
2.75 3.25
Output Low Voltage V
CC2
1.8V card; current pulses of 12nC
with I < 200mA, t < 400ns,
f < 20MHz
1.62 1.98
V
V
CC(5V)
= 0 to 5V -80
V
CC(3V)
= 0 to 3V -65
Output Current I
CC2
V
CC(1.8V)
= 0 to 1.8V -30
mA
Shutdown Current
Threshold
I
CC(SD)
(Note 1) 120 mA
Card-Active Mode
Slew Rate V
CCSR
Up/down; C < 300nF (Note 5) 0.05 0.16 0.22 V/μs
DATA LINES (I/O_ AND I/OIN)
I/O_ I/OIN Falling Edge Delay t
D(IO-IOIN)
(Note 1) 200 ns
Pullup Pulse Active Time t
PU
(Note 1) 100 ns
Maximum Frequency f
IOMAX
1 MHz
Input Capacitance C
I
10 pF
I/OA AND I/OB PINS
Output Low Voltage V
OL_IO1
I
OL_IO
= 1mA 0.3 V
Output Current I
OL_IO1
V
OL_IO
= 0V 0 -1 mA
Card-Inactive Mode
Internal Pullup
Resistor
R
PU_IO
To V
CC
6 11 19 k
Output Low Voltage V
OL_IO2
I
OL_IO
= 1mA 0.3 V
I
OH_IO
= < -20μA 0.8 x V
CC
Output High
Voltage
V
OH_IO2
I
OH_IO
= < -40μA (3V/5V) 0.75 x V
CC
V
Output Rise/Fall
Time
t
OT
C
L
= 30pF (Note 1) 0.1 μs
Input Low Voltage V
IL_IO
-0.3 +0.8
Card-Active Mode
Input High Voltage V
IH_IO
1.5 V
CC
V
