Datasheet

LTC1555L-1.8
3
PARAMETER CONDITIONS MIN TYP MAX UNITS
Controller Inputs/Outputs (DV
CC
= 1.8V)
Input Current (I
IH
/I
IL
) M0, M1, M2, RIN, CIN ● –100 100 nA
Input Current (I
IH
/I
IL
) DDRV ● –5 5 µA
High Level Input Current (I
IH
) DATA ● –20 20 µA
Low Level Input Current (I
IL
) DATA ● 1mA
High Input Voltage Threshold (V
IH
) M0, M1, M2, RIN, CIN, DDRV ● 0.7 × DV
CC
V
DATA
● DV
CC
– 0.6 V
Low Input Voltage Threshold (V
IL
) M0, M1, M2, RIN, CIN, DDRV ● 0.2 × DV
CC
V
DATA
● 0.4 V
High Level Output Voltage (V
OH
) DATA Source Current = 20µA I/O = V
CC
● 0.7 × DV
CC
V
Low Level Output Voltage (V
OL
) DATA Sink Current = –200µA I/O = 0V (Note 3) ● 0.4 V
DATA Pull-Up Resistance Between DATA and DV
CC
● 13 20 30 kΩ
DATA Output Rise/Fall Time DATA Loaded with 30pF ● 1.3 2 µs
SIM Inputs/Outputs (V
CC
= 3V or 5V)
I/O High Input Voltage Threshold (V
IH
)I
IH(MAX)
= ±20µA ● 0.7 × V
CC
V
I/O Low Input Voltage Threshold (V
IL
)I
IL(MAX)
= 1mA ● 0.4 V
High Level Output Voltage (V
OH
) I/O, Source Current = 20µA DATA or DDRV = DV
CC
● 0.8 × V
CC
V
Low Level Output Voltage (V
OL
) I/O, Sink Current = –1mA DATA or DDRV = 0V (Note 3) ● 0.4 V
High Level Output Voltage (V
OH
) RST, CLK Source Current = 20µA ● 0.9 × V
CC
V
Low Level Output Voltage (V
OL
) RST, CLK Sink Current = –200µA ● 0.4 V
I/O Pull-Up Resistance Between I/O and V
CC
● 6.5 10 14 kΩ
SIM Inputs/Outputs (V
CC
= 1.8V)
I/O High Input Voltage Threshold (V
IH
)I
IH(MAX)
= ±20µA ● 0.7 × V
CC
V
I/O Low Input Voltage Threshold (V
IL
)I
IL(MAX)
= 1mA ● 0.2 × V
CC
V
High Level Output Voltage (V
OH
) I/O, Source Current = 20µA DATA or DDRV = DV
CC
● 0.8 × V
CC
V
Low Level Output Voltage (V
OL
) I/O, Sink Current = –200µA DATA or DDRV = 0V (Note 3) ● 0.4 V
High Level Output Voltage (V
OH
) RST, CLK Source Current = 20µA ● 0.9 × V
CC
V
Low Level Output Voltage (V
OL
) RST, CLK Sink Current = –200µA ● 0.2 × V
CC
V
SIM Timing Parameters (DV
CC
= 1.8V, V
CC
= 5V)
CLK Rise/Fall Time CLK Loaded with 30pF, V
CC
= 3V or 5V ● 18 ns
V
CC
= 1.8V ● 50 ns
RST, I/O Rise/Fall Time RST, I/O Loaded with 30pF ● 1 µs
CLK Frequency CLK Loaded with 30pF ● 5 MHz
V
CC
Turn-On Time C
OUT
= 2.2µF, I
VCC
= 0 0.5 ms
V
CC
Discharge Time to 1V I
VCC
= 0, V
CC
= 5V, C
OUT
= 2.2µF 0.5 ms
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1555LEGN-1.8 is guaranteed to meet performance
specifications from 0°C to 70°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: The DATA and I/O pull-down drivers must also sink current
sourced by the internal pull-up resistor.
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (V
IN
= 2.6V to 6V, DV
CC
= 1.425V to 4.4V, controller digital pins tied to
DV
CC
, SIM digital pins floating, C1 = 0.1µF, C
OUT
= 2.2µF unless otherwise noted)
ELECTRICAL CHARACTERISTICS