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TCA9548A_15 Datasheet, PDF (3/35 Pages) Texas Instruments – Low-Voltage 8-Channel I2C Switch With Reset
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5 Pin Configuration and Functions
PW Package
24-Pin TSSOP
Top View
A0 1
A1 2
RESET 3
SD0 4
SC0 5
SD1 6
SC1 7
SD2 8
SC2 9
SD3 10
SC3 11
GND 12
24 VCC
23 SDA
22 SCL
21 A2
20 SC7
19 SD7
18 SC6
17 SD6
16 SC5
15 SD5
14 SC4
13 SD4
TCA9548A
SCPS207E – MAY 2012 – REVISED OCTOBER 2015
RGE Package
24-Pin VQFN
Top View
24 23 22 21 20 19
SD0 1
18 A2
SC0 2
17 SC7
SD1 3
16 SD7
SC1 4
15 SC6
SD2 5
14 SD6
SC2 6
13 SC5
7 8 9 10 11 12
NAME
A0
A1
RESET
SD0
SC0
SD1
SC1
SD2
SC2
SD3
SC3
GND
SD4
SC4
SD5
SC5
SD6
SC6
SD7
SC7
A2
SCL
SDA
VCC
PIN
TSSOP (PW)
1
2
QFN (RGE)
22
23
3
24
4
1
5
2
6
3
7
4
8
5
9
6
10
7
11
8
12
9
13
10
14
11
15
12
16
13
17
14
18
15
19
16
20
17
21
18
22
19
23
20
24
21
Pin Functions
TYPE
DESCRIPTION
Input
Input
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Ground
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Input
I/O
I/O
Power
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.
Serial data 0. Connect to VDPU0(1) through a pull-up resistor.
Serial clock 0. Connect to VDPU0(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.
Serial data 2. Connect to VDPU2(1) through a pull-up resistor.
Serial clock 2. Connect to VDPU2(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.
Ground
Serial data 4. Connect to VDPU4(1) through a pull-up resistor.
Serial clock 4. Connect to VDPU4(1) through a pull-up resistor.
Serial data 5. Connect to VDPU5(1) through a pull-up resistor.
Serial clock 5. Connect to VDPU5(1) through a pull-up resistor.
Serial data 6. Connect to VDPU6(1) through a pull-up resistor.
Serial clock 6. Connect to VDPU6(1) through a pull-up resistor.
Serial data 7. Connect to VDPU7(1) through a pull-up resistor.
Serial clock 7. Connect to VDPU7(1) through a pull-up resistor.
Address input 2. Connect directly to VCC or ground.
Serial clock bus. Connect to VDPUM(1) through a pull-up resistor.
Serial data bus. Connect to VDPUM(1) through a pull-up resistor.
Supply voltage
(1) VDPUX is the pull-up reference voltage for the associated data line. VDPUM is the master I2C reference voltage and VDPU0-VDPU7 are the
slave channel reference voltages.
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