LTC1555L View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1555L Datasheet PDF : 8 Pages
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LTC1555L
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (VIN = 2.6V to 6V, DVCC = 1.425V to 4.4V, controller digital pins tied to
DVCC, SIM digital pins floating, C1 = 0.1µF, COUT = 2.2µF unless otherwise noted)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Controller Inputs/Outputs (DVCC = 3V)
Input Current (IIH /IIL)
M0, M1, M2, RIN, CIN
q –100
100
nA
Input Current (IIH /IIL)
High Level Input Current (IIH)
DDRV
DATA
q –5
q –20
5
µA
20
µA
Low Level Input Current (IIL)
DATA
q
1
mA
High Input Voltage Threshold (VIH)
M0, M1, M2, RIN, CIN, DDRV
DATA
q
0.7 × DVCC
V
q
DVCC – 0.6
V
Low Input Voltage Threshold (VIL)
M0, M1, M2, RIN, CIN, DDRV
DATA
q 0.2 × DVCC
V
q 0.4
V
High Level Output Voltage (VOH)
DATA Source Current = 20µA I/O = VCC
q 0.7 × DVCC
V
Low Level Output Voltage (VOL)
DATA Sink Current = –200µA I/O = 0V (Note 3)
q
0.4
V
DATA Pull-Up Resistance
DATA Output Rise/Fall Time
Between DATA and DVCC
DATA Loaded with 30pF
q
13
20
30
kΩ
q
1.3
2
µs
SIM Inputs/Outputs (VCC = 3V or 5V)
I/O High Input Voltage Threshold (VIH)
I/O Low Input Voltage Threshold (VIL)
IIH(MAX) = ±20µA
IIL(MAX) = 1mA
q
q 0.4
0.7 × VCC
V
V
High Level Output Voltage (VOH)
I/O, Source Current = 20µA DATA or DDRV = DVCC
q 0.8 × VCC
V
Low Level Output Voltage (VOL)
High Level Output Voltage (VOH)
I/O, Sink Current = –1mA DATA or DDRV = 0V (Note 3) q
RST, CLK Source Current = 20µA
q 0.9 × VCC
0.4
V
V
Low Level Output Voltage (VOL)
RST, CLK Sink Current = –200µA
q
0.4
V
I/O Pull-Up Resistance
Between I/O and VCC
SIM Timing Parameters (DVCC = 3V, VCC = 5V)
q 6.5
10
14
kΩ
CLK Rise/Fall Time
CLK Loaded with 30pF, VCC = 3V, or 5V
q
18
ns
RST, I/O Rise/Fall Time
RST, I/O Loaded with 30pF
q
1
µs
CLK Frequency
CLK Loaded with 30pF
q
5
MHz
VCC Turn-On Time
COUT = 2.2µF, IVCC = 0
0.5
ms
VCC Discharge Time to 1V
IVCC = 0, VCC = 5V, COUT = 2.2µF
0.5
ms
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 2: The LTC1555LEGN is guaranteed to meet performance
specifications from 0°C to 70°C. Specifications over the – 40°C to 85°C
Note 3: The DATA and I/O pull-down drivers must also sink current
sourced by the internal pull-up resistor.
3
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