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PCA9544APWT Datasheet(PDF) 3 Page - Texas Instruments

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Part # PCA9544APWT
Description  SMBus Multiplexer With Interrupt Logic
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

PCA9544APWT Datasheet(HTML) 3 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
SDA
INT3
RGY PACKAGE
(TOP VIEW)
2
A1
19
3
A2
18
SCL
4
INT0
17
INT
5
SD0
16
SC3
6
SC0
15
SD3
7
INT1
14
8
SD1
13
SC2
9
SC1
12
SD2
1
10
20
11
GQN OR ZQN PACKAGE
(TOP VIEW)
1
2
3
4
A
B
C
D
E
PCA9544A
www.ti.com
SCPS146E – OCTOBER 2005 – REVISED JUNE 2014
6 Pin Configuration and Functions
Pin Functions
PIN NO.
NAME
FUNCTION
DGV, DW, PW,
RGW
GQN, ZQN
AND RGY
1
19
A2
A0
Address input 0. Connect directly to VCC or ground.
2
20
A1
A1
Address input 1. Connect directly to VCC or ground.
3
1
B3
A2
Address input 2. Connect directly to VCC or ground.
4
2
B1
INT0
Active-low interrupt input 0. Connect to VDPU0
(1) through a pull-up resistor.
5
3
C2
SD0
Serial data 0. Connect to VDPU0
(1) through a pull-up resistor.
6
4
C1
SC0
Serial clock 0. Connect to VDPU0
(1) through a pull-up resistor.
7
5
D3
INT1
Active-low interrupt input 1. Connect to VDPU1
(1) through a pull-up resistor.
8
6
D1
SD1
Serial data 1. Connect to VDPU1
(1) through a pull-up resistor.
9
7
E2
SC1
Serial clock 1. Connect to VDPU1
(1) through a pull-up resistor.
10
8
E1
GND
Ground
11
9
E3
INT2
Active-low interrupt input 2. Connect to VDPU2
(1) through a pull-up resistor.
12
10
E4
SD2
Serial data 2. Connect to VDPU2
(1) through a pull-up resistor.
13
11
D2
SC2
Serial clock 2. Connect to VDPU2
(1) through a pull-up resistor.
14
12
D4
INT3
Active-low interrupt input 3. Connect to VDPU3
(1) through a pull-up resistor.
15
13
C3
SD3
Serial data 3. Connect to VDPU3
(1) through a pull-up resistor.
16
14
C4
SC3
Serial clock 3. Connect to VDPU3
(1) through a pull-up resistor.
17
15
B2
INT
Active-low interrupt output. Connect to VDPUM
(1) through a pull-up resistor.
18
16
B4
SCL
Serial clock line. Connect to VDPUM
(1) through a pull-up resistor.
19
17
A4
SDA
Serial data line. Connect to VDPUM
(1) through a pull-up resistor.
20
18
A3
VCC
Supply power
(1)
VDPUX is the pull-up reference voltage for the associated data line. VDPUM is the master I
2C reference voltage while V
DPU0-VDPU3 are the
slave channel reference voltages.
Copyright © 2005–2014, Texas Instruments Incorporated
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