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LS7290 Datasheet(PDF) 3 Page - LSI Computer Systems

Part # LS7290
Description  STEPPER MOTOR CONTROLLER
Download  9 Pages
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Manufacturer  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

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7290-072011-3
ABSOLUTE MAXIMUM RATINGS:
PARAMETER
SYMBOL
VALUE
UNIT
DC Supply Voltage
VDD - VSS
+7
V
Any Input Voltage
VIN
VSS – 0.3 to VDD + 0.3
V
Operating Temperature
TA
-20 to +85
°C
Storage Temperature
TSTG
-85 to +150
°C
ELECTRICAL SPECIFICATIONS (-25
°C < TA < +85°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
Supply Voltage
VDD
3.0
-
5.5
V
-
Supply Current
IDD
-
-
2.0
mA
Outputs floating, Inputs high
CLK frequency
fc
8.0
-
MHz
-
Enable Propagation Delay
tepd
100
-
-
ns
-
FRD/RVRS Setup Time
(before step pulse)
tds
0
-
-
μs
-
Step Pulse Width
SPW
1.0
-
-
μs
at fc = 8 MHz
Interstep Pulse Delay
ISD
32
-
-
μs
at fc = 8 MHz
Interstep Phase Blanking
IPB
1.25
-
5.0
μs
at fc = 8 MHz
Reset Pulse Width
RPW
1.0
-
-
μs
at fc = 8 MHz
Reset to Step Pulse Delay
trs
0
-
-
μs
-
Hi-Level Input Voltage
VIH
2
-
-
V
VDD = 5
± 0.25V
Low-Level Input Voltage
VIL
-
-
0.8
V
VDD = 5
± 0.25V
High-Level Input Current
IH
-
-
50
nA
Leakage Current
Low-Level Input Current
IL
-
-
50
nA
Leakage Current
Output Sink Current
IO
-10
-
-
mA
VO = 0.4V, VDD = 5V
IO
-5
-
-
mA
VO = 0.4V, VDD = 3.3V
Output Source Current
IO
5
-
-
mA
VO = 4V, VDD = 5V
IO
2.5
-
-
mA
VO = 2.5V, VDD = 3.3V
Comparator Offset Voltage
VOS
-
5
15
mV
VREF = 1V
Input Reference Voltage
VREF
0.5
-
3.0
V
VDD = 5V
VREF
0.5
-
1.5
V
VDD = 3.3V
fc ~ 1/5RC
At VDD = 5V and R = 2.2 k
Ω, C = 12pF,
oscillator frequency is 8 MHz (typical).
FIGURE 3. RC OSCILLATOR FOR CLOCK GENERATOR


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