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| TCA9545A Datasheet, PDF (3/30 Pages) Texas Instruments – Low Voltage 4-channel I2C and SMbus Switch With Interrupt Logic and Reset Functions | |||
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6 Terminal Configuration and Functions
PW PACKAGE
(TOP VIEW)
A0 1
A1 2
RESET 3
INT0 4
SD0 5
SC0 6
INT1 7
SD1 8
SC1 9
GND 10
20 VCC
19 SDA
18 SCL
17 INT
16 SC3
15 SD3
14 INT3
13 SC2
12 SD2
11 INT2
TCA9545A
SCPS204B â JANUARY 2014 â REVISED MARCH 2014
Terminal Functions
NO.
PW
NAME
1
A0
2
A1
3
RESET
4
INT0
5
SD0
6
SC0
7
INT1
8
SD1
9
SC1
10
GND
11
INT2
12
SD2
13
SC2
14
INT3
15
SD3
16
SC3
17
INT
18
SCL
19
SDA
20
VCC
DESCRIPTION
Address input 0. Connect directly to VCC or ground.
Address input 1. Connect directly to VCC or ground.
Active-low reset input. Connect to VCC or VDPUM(1) through a pull-up resistor if not
used.
Active-low interrupt input 0. Connect to VDPU0(1) through a pull-up resistor.
Serial data 0. Connect to VDPU0 (1) through a pul-up resistor.
Serial clock 0. Connect to VDPU0 (1) through a pull-up resistor.
Active-low interrupt input 1. Connect to VDPU1(1) through a pull-up resistor.
Serial data 1. Connect to VDPU1(1) through a pull-up resistor.
Serial clock 1. Connect to VDPU1(1) through a pull-up resistor.
Ground
Active-low interrupt input 2. Connect to VDPU2(1) through a pull-up resistor.
Serial data 2. Connect to VDPU2(1) through a pull-up resistor.
Serial clock 2. Connect to VDPU2(1) through a pull-up resistor.
Active-low interrupt input 3. Connect to VDPU3(1) through a pull-up resistor.
Serial data 3. Connect to VDPU3(1) through a pull-up resistor.
Serial clock 3. Connect to VDPU3(1) through a pull-up resistor.
Active-low interrupt output. Connect to VDPUM(1) through a pull-up resistor.
Serial clock line. Connect to VDPUM(1) through a pull-up resistor.
Serial data line. Connect to VDPUM(1) through a pull-up resistor.
Supply power
(1) VDPUX is the pull-up reference voltage for the associated data line. VDPUM is the master I2C master reference voltage and VDPU0âVDPU3
are the slave channel reference voltages.
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: TCA9545A
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