Datasheet

DS8007
Multiprotocol Dual Smart Card Interface
_______________________________________________________________________________________ 3
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
Alarm Pulse Width t
W
C
DELAY
= 22nF 10 ms
External crystal 4 20
External Clock Frequency f
XTAL
External oscillator 0 20
MHz
Internal Oscillator f
INT
1.6 2.5 3.7 MHz
3x step-up 5.7
Voltage on V
UP
Pin V
UP
2x step-up 4.1
V
Voltage Detection of V
DDA
for 2x,
3x Step-Up
V
DET
3.35 3.50 3.60 V
Shutdown Temperature T
SD
+150 °C
Output Low
Voltage
V
OLRST
I
OLRST
= 1mA 0 0.3 V
Card
Inactive
Mode
Output Current I
OLRST
V
OLRST
= 0V 0 -1 mA
Output Low
Voltage
V
OLRSTL
I
OLRST
= +200μA 0 0.3
Output High
Voltage
V
OHRSTH
I
OHRST
= -200μA
V
CCx
–
0.5
V
CCx
V
Rise Time t
RRST
C
L
= 30pF 0.1
Fall Time t
FRST
C
L
= 30pF 0.1
μs
Shutdown
Current
I
RST(SD)
-25
RSTx
Pins
Card
Active
Mode
Current
Limitation
I
RST(LIMIT)
-25 +25
mA
Output Low
Voltage
V
OLCLK
I
OLCLK
= 1mA 0 0.3 V
Card
Inactive
Mode
Output Current I
OLCLK
V
OLCLK
= 0V 0 -1 mA
Output Low
Voltage
V
OLCLK
I
OLCLK
= +200μA 0 0.3
Output High
Voltage
V
OHCLK
I
OHCLK
= -200μA
V
CCx
–
0.5
V
CCx
V
Rise Time t
RCLK
C
L
= 30pF (Note 2) 8
Fall Time t
FCLK
C
L
= 30pF (Note 2) 8
ns
Card
Active
Mode
Current
Limitation
I
CLK(LIMIT)
-70 +70 mA
Idle configuration (1MHz) 1 1.85
CLKx
Pins
Clock Frequency f
CLK
Operational 0 10
MHz
Duty Factor  C
L
= 30pF 45 55 %