Datasheet

DS8007
Multiprotocol Dual Smart Card Interface
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +3.3V, V
DDA
= +3.3V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Low
Voltage
V
OLC48
I
OLC48
= 1mA 0 0.3 V
Output Current I
OLC48
V
OLC48
= 0V 0 -1 mA
Card
Inactive
Mode
Internal Pullup
Resistor
R
PULLUP
Between C4 or C8 and V
CCx
6 10 14 k
Output Low
Voltage
V
OLC48
I
OLC48
= 1mA 0 0.3
I
OHC48
 -20μA 0.8 x V
CCx
V
CCxOutput High
Voltage
V
OHC48
I
OHC48
 -40μA (3V/5V) 0.75 x V
CCx
V
CCx
V
Output
Rise/Fall Time
t
OT
C
L
= 30pF 0.1 μs
Input Low
Voltage
V
ILC48
-0.3 +0.8
Input High
Voltage
V
IHC48
1.5 V
CCx
V
Input Low
Current
I
ILC48
V
ILIO
= 0V 850
Input High
Current
I
IHC48
V
IHIO
= V
CCx
20
μA
Input Rise/Fall
Time
t
IT
C
L
= 30pF 1.2 μs
Pullup Pulse
Width
t
WPU
Active pullup 200 ns
C4x,
C8x
Pins
Card
Active
Mode
Operating
Frequency
f
MAX
On card contact pins 1 MHz
TIMING
Activation Sequence Duration t
ACT
See Figure 9 130 μs
Deactivation Sequence Duration t
DE
See Figure 9 150 μs
PRESA/PRESB PINS
Input Low Voltage V
ILPRES
0.25 x V
DD
V
Input High Voltage V
IHPRES
0.7 x V
DD
V
Input Low Current I
ILPRES
V
ILPRES
= 0V 40 μA
Input High Current I
IHPRES
V
IHPRES
= V
DD
40 μA
I/OAUX PIN
Internal Pullup Resistor R
PULLUP
Between I/OAUX and V
DD
9 14 19 k
Output Low Voltage V
OLAUX
I
OLAUX
= 1mA 0.3 V
Output High Voltage V
OHAUX
I
OHAUX
= 40μA (3V/5V) 0.75 x V
DD
V
DD
V
Output Rise/Fall Time t
OT
C
L
= 30pF 0.1 μs