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| MIC5800 Datasheet, PDF (5/6 Pages) Micrel Semiconductor – 4/8-Bit Parallel-Input Latched Drivers | |||
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MIC5800/5801
Truth Table
INN
Strobe
0
1
1
1
X
X
X
X
X
0
X
0
X = Irrelevant
t-1 = previous output state
t = present output state
Clear
0
0
1
X
0
0
Output
Enable
0
0
X
1
0
0
OUTN
t-1
t
X
OFF
X
ON
X
OFF
X
OFF
ON
ON
OFF OFF
Micrel
Information present at an input is transferred to its latch when
the STROBE is high. A high CLEAR input will set all latches
to the output OFF condition regardless of the data or
STROBE input levels. A high OUTPUT ENABLE will set all
outputs to the off condition, regardless of any other input
conditions. When the OUTPUT ENABLE is low, the outputs
depend on the state of their respective latches.
Typical Application
Unipolar Stepper-Motor Drive
OUTPUT ENABLE
CLEAR 1
STROBE 2
IN1 3
µP
IN2 4
IN3 5
IN4 6
7
0.1µF
14
VDD
13
OUT1
12
OUT2
11
OUT3
10
OUT4
9
8
0.1µF
+30V
STEPPER
MOTOR
+30V
MIC5800
UNIPOLAR WAVE DRIVE
7
UNIPOLAR 2-PHASE DRIVE
STROBE
STROBE
IN 1
IN 2
IN 3
IN 4
OUT 1
OUT 2
OUT 3
OUT 4
IN 1
IN 2
IN 3
IN 4
OUT 1
OUT 2
OUT 3
OUT 4
October 1998
7-15
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