LTC4558
3
4558fa
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: This specifi cation applies to both Smart Card classes.
PARAMETER CONDITIONS MIN TYP MAX UNITS
CLKA,B
Low Level Output Voltage (V
OL
) Sink Current = – 200μA (Note 2)
●
0.2 V
High Level Output Voltage (V
OH
) Source Current = 200μA (Note 2)
●
V
CCA,B
–0.2
V
Rise/Fall Time Loaded with 50pF (10% to 90%) (Note 2)
●
16 ns
CLKA,B Frequency (Note 2)
●
10 MHz
RSTA,B
Low Level Output Voltage (V
OL
) Sink Current = – 200μA (Note 2)
●
0.2 V
High Level Output Voltage (V
OH
) Source Current = 200μA (Note 2)
●
V
CCA,B
–0.2
V
Rise/Fall Time Loaded with 50pF (10% to 90%) (Note 2)
●
100 ns
I/OA, I/OB
Low Level Output Voltage (V
OL
) Sink Current = – 1mA (V
DATA
= 0V) (Note 2)
●
0.3 V
High Level Output Voltage (V
OH
) Source Current = 20μA (V
DATA
= V
DVCC
) (Note 2)
●
0.85 •
V
CCA,B
V
Rise/Fall Time Loaded with 50pF (10% to 90%) (Note 2)
●
500 ns
Short-Circuit Current V
DATA
= 0V (Note 2)
●
510 mA
DATA
Low Level Output Voltage (V
OL
) Sink Current = – 500μA (V
I/OA,B
= 0V)
●
0.3 V
High Level Output Voltage (V
OH
) Source Current = 20μA (V
I/OA,B
= V
CCA,B
)
●
0.8 •
DV
CC
V
Rise/Fall Time Loaded with 50pF (10% to 90%)
●
125 500 ns
ENABLEA, ENABLEB, RSTIN, CLKIN, CSEL, VSELA, VSELB, CLKRUNA, CLKRUNB
Low Input Threshold (V
IL
)
●
0.15 •
DV
CC
V
High Input Threshold (V
IH
)
●
0.85 •
DV
CC
V
Input Current (I
IH
/I
IL
)
●
–1 1 μA
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
BATT
= 3.3V, DV
CC
= 1.8V, C
A
= C
B
= 1μF, unless otherwise specifi ed.
Note 3: The LTC4558E is guaranteed to meet performance specifi cations
from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 4: Based on long-term current density limitations.
