Datasheet
DS_8009C_025  73S8009C Data Sheet 
Rev. 1.5    11 
2.2  Recommended Operating Conditions 
Function operation should be restricted to the recommended operating conditions specified in Table 3. 
Table 3: Recommended Operating Conditions 
Parameter  Rating 
Supply voltage V
PC
  2.7 to 6.5 VDC 
Supply Voltage V
BUS
   4.4 to 5.5 VDC 
Supply Voltage V
BAT
  4.0 to 6.5 VDC 
Ambient operating temperature  -40 °C to +85 °C 
2.3  Smart Card Interface Requirements 
Table 4 lists the 73S8009C Smart Card interface requirements. 
Table 4: DC Smart Card Interface Requirements 
Symbol  Parameter  Condition  Min  Nom  Max  Unit 
Card Power Supply (V
CC
) Regulator 
General Conditions: -40C < 85C, 2.7 V < V
PC
 < 6.6 V 
V
CC
Card supply voltage 
including ripple and noise 
Inactive mode  -0.1 
– 
0.1  V 
Inactive mode I
CC
 = 1 mA  -0.1 
– 
0.4  V 
Active mode; I
CC
 <65 mA; 5 V  4.65 
– 
5.25  V 
Active mode; I
CC
 < 65 mA; 3 V  2.85 
– 
3.15  V 
Active mode; I
CC
 < 40 mA; 1.8 V  1.68 
– 
1.92  V 
Active mode; single pulse of 
100 mA for 2 µs; 5 V, fixed load 
= 25 mA 
4.6 
– 
5.25 
V 
Active mode; single pulse of 
100 mA for 2 µs; 3 V, fixed load 
= 25 mA 
2.76 
– 
3.15  V 
Active mode; current pulses of 
40nAs with peak |I
CC
 | <200 
mA, t <400 ns; 5 V 
4.6 
– 
5.25  V 
Active mode; current pulses of 
40nAs with peak |I
CC
 | <200 
mA, t <400 ns; 3 V 
2.7 
– 
3.15  V 
Active mode; current pulses of 
20nAs with peak |I
CC
 | <100 
mA, t <400 ns; 1.8 V 
1.62 
– 
1.92  V 
V
CCrip
  V
CC 
ripple  f
RIPPLE
 = 20 kHz – 200 MHz   
– 
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 
– 
65  mA 
I
CCF
  I
CC
 fault current  Class A, B (5 V and 3 V)  75 
– 
150  mA 
Class C (1.8 V)  55 
– 
130  mA 
I
SC
  Maximum current prior to 
shut-down 
Load current limit prior to Vcc 
shut-down 
80  –  150  mA 
Load current limit prior to Vcc 
shut-down for Vcc=1.8 V 
60  –  130  mA 
V
S
  Vcc slew rate, rise and 
fall 
C = 0.5 µF 
0.10  0.30  0.70  V/μs 










