Rainbow Electronics DS8024 - Manual (Page 3)

DS8024
Smart Card Interface
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RECOMMENDED DC OPERATING CONDITIONS (continued)
(V DD = +3.3V, V DDA = +5.0V, T A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RST PIN
Output Low Voltage V OL_RST1 I OL_RST = 1mA 0 0.3 V
Card-Inactive Mode
Output Current I OL_RST1 V O_LRST = 0V 0 -1 mA
Output Low Voltage V OL_RST2 I OL_RST = 200μA 0 0.3 V
Output High
Voltage
V OH_RST2 I OH_RST = -200μA
V CC -
0.5
V CC V
Rise Time t R_RST C L = 30pF (Note 3) 0.1 μs
Fall Time t F_RST C L = 30pF (Note 3) 0.1 μs
Shutdown Current
Threshold
I RST(SD) -20 mA
Current Limitation I RST(LIMIT) -20 +20 mA
Card-Active Mode
RSTIN to RST Delay t D(RSTIN-RST) 2 μs
CLK PIN
Output Low Voltage V OL_CLK1 I OLCLK = 1mA 0 0.3 V
Card-Inactive Mode
Output Current I OL_CLK1 V OLCLK = 0V 0 -1 mA
Output Low Voltage V OL_CLK2 I OLCLK = 200μA 0 0.3 V
Output High
Voltage
V OH_CLK2 I OHCLK = -200μA
V CC -
0.5
V CC V
Rise Time t R_CLK C L = 30pF (Note 3) 8 ns
Fall Time t F_CLK C L = 30pF (Note 3) 8 ns
Current Limitation I CLK(LIMIT) -70 +70 mA
Clock Frequency f CLK Operational (Note 3) 0 10 MHz
Duty Factor C L = 30pF (Note 3) 45 55 %
Card-Active Mode
Slew Rate SR C L = 30pF (Note 3) 0.2 V/ns
V CC PIN
Output Low Voltage V CC1 I CC = 1mA 0 0.3 V
Card-Inactive Mode
Output Current I CC1 V CC = 0V 0 -1 mA
I CC(5V) < 80mA 4.75 5.00 5.25
I CC(3V) < 65mA 2.78 3.00 3.22
5V card: current pulses of 40nC
with I < 200mA, t < 400ns,
f < 20MHz (Note 3)
4.6 5.4
Output Low Voltage V CC2
3V card: current pulses of 24nC
with I < 200mA, t < 400ns,
f < 20MHz (Note 3)
2.75 3.25
V
V CC(5V) = 0 to 5V -80
Output Current I CC2
V
CC(3V)
= 0 to 3V -65
mA
Shutdown Current
Threshold
I
CC(SD)
120 mA
Card-Active Mode
Slew Rate V CCSR Up/down, C < 300nF 0.05 0.16 0.22 V/μs