DS8024 Datasheet, PDF (5/15 Pages) Maxim Integrated Products – Smart Card Interface

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
CONTROL PINS (CLKDIV1, CLKDIV2, CMDVCC, RSTIN, 5V/3V)
Input Low Voltage
V_IL
CONDITIONS
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
V_IH
I_{IL_IO}
I_{IH_IO}
R_PU
V_OL
V_OH
R_PU
0 < V_IL < V_DD
0 < V_IH < V_DD
Pullup to V_DD, 5V/3V only
I_OL = 2mA
I_OH = -15µA
Pullup to V_DD
V_{IL_PRES}
MIN TYP MAX UNITS
-0.3
0.3 x
V_DD
V
0.7 x
V_DD
V_DD +
0.3
V
5
µA
5
µA
50
85 120
k

0
0.3
V
0.75 x
V_DD
V
12
20
28
k

0.3 x
V
V_DD
Input High Voltage
V_{IH_PRES}
0.7 x
V
V_DD
Input Low Current
I_{IL_PRES} V_{IL_PRES} = 0V
40
µA
Input High Current
I_{IH_PRES} V_{IH_PRES} = V_DD
40
µA
TIMING
Activation Time
t_ACT
160
µs
Deactivation Time
t_DEACT
80
µs
CLK to Card Start ^{Window Start}
Time
Window End
PRES/PRES Debounce Time
t₃
t₅
t_DEBOUNCE
95
µs
160
8
ms
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.
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