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KA2821D Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. KA2821D
Description  The KA2821D is a monolithic integrated circuit, and suit able as a two-phase stepping motor driver of a 3.5-inch FDD system
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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KA2821D Datasheet(HTML) 2 Page - Fairchild Semiconductor

   
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KA2821D
2
Pin Assignments
Pin Definitions
Pin Number
Pin Name
I/O
Pin Function Description
Channel
1
NC
-
No connection
-
2VCC
-
Logic part supply voltage
A, B
3
DIRA
I
A-channel direction input
A
4
SGND
-
Signal ground
A, B
5
PGND
-
Power ground
A, B
6
PGND
-
Power ground
A, B
7
SGND
-
Signal ground
A, B
8
DIRB
I
B-channel direction input
B
9
CE
I
Chip enable input
A, B
10
NC
-
No connection
-
11
NC
-
No connection
-
12
VSB
-
B-channel seeking supply voltage
B
13
BOUT
O
B-channel output
B
14
BOUT
O
B-channel inverting output
B
15
P-GND
-
Power ground
A, B
16
P-GND
-
Power ground
A, B
17
AOUT
O
A-channel inverting output
A
18
AOUT
O
A-channel output
A
19
VSA
-
A-channel seeking supply voltage
A
20
NC
-
No connection
-
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
KA2821D
NC
VCC
NC
SGND
PGND
PGND
SGND
DIRB
CE
NC
NC
VSA
AOUT
AOUT
PGND
PGND
BOUT
BOUT
VSB
NC


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