DS_1209F_004
73S1209F Data Sheet
Rev. 1.2
107
3.6 Smart Card Interface Requirements
Symbol Parameter
Condition
Min Typ. Max Unit
Card Power Supply (V
CC
) Regulator
General conditions, -40
°
C < T < 85
°
C, 4.75V < V
PC
< 6.0V, 2.7V < V
DD
< 3.6V
V
CC
Card supply
Voltage
including ripple
and noise
Inactive mode
-0.1
0.1
V
Inactive mode, I
CC
= 1mA
-0.1
0.4
V
Active mode; I
CC
<65mA; 5V
4.65
5.25
V
Active mode; I
CC
<65mA; 5v, NDS
condition
4.75 5.25
V
Active mode; I
CC
< 65mA; 3V
2.85
3.15
V
Active mode; I
CC
< 40mA; 1.8V
1.68
1.92
V
Active mode; single pulse of 100mA
for 2
μ
s; 5 volt, fixed load = 25mA
4.6 5.25
V
Active mode; single pulse of 100mA
for 2
μ
s; 3v, fixed load = 25mA
2.7 3.15
V
Active mode; current pulses of 40nAs
with peak |I
CC
| <200mA, t <400ns; 5V
4.6 5.25
V
Active mode; current pulses of 40nAs
with peak |I
CC
| <200mA, t <400ns; 5V
4.65 5.25
V
Active mode; current pulses of 40nAs
with peak |I
CC
| <200mA,t <400ns; 3V
2.7 3.15
V
Active mode; current pulses of 20nAs
with peak |I
CC
| <100mA,t <400ns;
1.8V
1.62 1.92
V
V
CCrip
V
CC
Ripple f
RIPPLE
= 20kHz – 200MHz
350
mV
I
CCmax
Card supply
output current
Static load current, V
CC
>1.65
40
mA
Static load current, V
CC
>4.6 or 2.7
volts as selected
90
I
CCF
I
CC
fault current
Class A, B (5V and 3V)
100
180
mA
Class C (1.8V)
60 130
V
SR
Vcc slew rate,
rise
Rise rate on activate C=1.0
μ
F
0.06 0.15 0.25
V/
μ
s
V
SF
Vcc slew rate,
fall
Fall rate on deactivate, C=1.0
μ
F
0.075 0.15 0.6 V/
μ
s
V
rdy
Vcc ready
voltage
(VCCOK = 1)
5V operation, Vcc rising
4.6
V
3V operation, Vcc rising
2.75
V
1.8V operation, Vcc rising
1.65
V
C
F
External filter
capacitor (V
CC
to
GND)
C
F
should be ceramic with low ESR
(<100M
Ω
).
1 3.3
μ
F