DS8007 Datasheet, PDF (5/41 Pages) Dallas Semiconductor – Multiprotocol Dual Smart Card Interface

Multiprotocol Dual Smart Card Interface
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = +3.3V, V_DDA = +3.3V, T_A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Card
Inactive
Mode
Output Low
Voltage
Output Current
Internal Pullup
Resistor
V_OLC48 I_OLC48 = 1mA
I_OLC48 V_OLC48 = 0V
R_PULLUP Between C4 or C8 and V_CCx
Output Low
Voltage
Output High
Voltage
Output
Rise/Fall Time
V_OLC48 I_OLC48 = 1mA
V_OHC48
I_OHC48 ≤ -20µA
I_OHC48 ≤ -40µA (3V/5V)
t_OT
C_L = 30pF
C4x,
C8x
Pins
Card
Active
Mode
Input Low
Voltage
Input High
Voltage
Input Low
Current
V_ILC48
V_IHC48
I_ILC48 V_ILIO = 0V
Input High
Current
I_IHC48 V_IHIO = V_CC
Input Rise/Fall
Time
t_IT
C_L = 30pF
Pullup Pulse
Width
t_WPU Active pullup
Operating
Frequency
TIMING
Activation Sequence Duration
Deactivation Sequence Duration
PRESA/PRESB PINS
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
I/OAUX PIN
Internal Pullup Resistor
Output Low Voltage
Output High Voltage
Output Rise/Fall Time
f_MAX On card contact pins
t_ACT
t_DE
See Figure 9
See Figure 9
V_ILPRES
V_IHPRES
I_ILPRES
I_IHPRES
V_ILPRES = 0V
V_IHPRES = V_DD
R_PULLUP
V_OLAUX
V_OHAUX
t_OT
Between I/OAUX and V_DD
I_OLAUX = 1mA
I_OHAUX = 40µA (3V/5V)
C_L = 30pF
MIN TYP MAX UNITS
0
0.3
V
0
-1
mA
6
10
14
kΩ
0
0.8 x V_CC
0.75 x V_CC
0.3
V
V_CC
V_CC
0.1
µs
-0.3
+0.8
V
1.5
V_CC
850
µA
20
1.2
µs
200
ns
1
MHz
130
µs
150
µs
0.7 x V_DD
0.25 x V_DD V
V
40
µA
40
µA
9
14
19
kΩ
0.3
V
0.75 x V_DD
V_DD
V
0.1
µs
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