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PCA9544APW Datasheet(PDF) 2 Page - Texas Instruments

Part # PCA9544APW
Description  4-CHANNEL I2C AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PCA9544APW Datasheet(HTML) 2 Page - Texas Instruments

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20
6
8 9 10
1
2
3
4
5
15
14
13
12
11
19
A2
INT0
SD0
SC0
INT1
INT
SC3
SD3
INT3
SC2
RGW PACKAGE
(TOP VIEW)
18 17 16
7
DGV, DW, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
A0
A1
A2
INT0
SD0
SC0
INT1
SD1
SC1
GND
V
CC
SDA
SCL
INT
SC3
SD3
INT3
SC2
SD2
INT2
RGY PACKAGE
(TOP VIEW)
2
A1
19
SDA
3
A2
18
SCL
4
INT0
17
INT
5
SD0
16
SC3
6
SC0
15
SD3
7
INT1
14
INT3
8
SD1
13
SC2
9
SC1
12
SD2
1
10
20
11
PCA9544A
4-CHANNEL I2C AND SMBus MULTIPLEXER
WITH INTERRUPT LOGIC
SCPS146C – OCTOBER 2005 – REVISED OCTOBER 2006
TERMINAL FUNCTIONS
NO.
NAME
FUNCTION
DGV, DW, PW,
RGW
AND RGY
1
19
A0
Address input 0. Connect directly to VCC or ground.
2
20
A1
Address input 1. Connect directly to VCC or ground.
3
1
A2
Address input 2. Connect directly to VCC or ground.
Active-low interrupt input 0. Connect to VCC through a pullup
4
2
INT0
resistor.
5
3
SD0
Serial data 0. Connect to VCC through a pullup resistor.
6
4
SC0
Serial clock 0. Connect to VCC through a pullup resistor.
Active-low interrupt input 1. Connect to VCC through a pullup
7
5
INT1
resistor.
8
6
SD1
Serial data 1. Connect to VCC through a pullup resistor.
9
7
SC1
Serial clock 1. Connect to VCC through a pullup resistor.
10
8
GND
Ground
Active-low interrupt input 2. Connect to VCC through a pullup
11
9
INT2
resistor.
12
10
SD2
Serial data 2. Connect to VCC through a pullup resistor.
13
11
SC2
Serial clock 2. Connect to VCC through a pullup resistor.
Active-low interrupt input 3. Connect to VCC through a pullup
14
12
INT3
resistor.
15
13
SD3
Serial data 3. Connect to VCC through a pullup resistor.
16
14
SC3
Serial clock 3. Connect to VCC through a pullup resistor.
Active-low interrupt output. Connect to VCC through a pullup
17
15
INT
resistor.
18
16
SCL
Serial clock line. Connect to VCC through a pullup resistor.
19
17
SDA
Serial data line. Connect to VCC through a pullup resistor.
20
18
VCC
Supply power
2
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