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TCA9538DBR Datasheet(PDF) 3 Page - Texas Instruments

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Part # TCA9538DBR
Description  Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TCA9538DBR Datasheet(HTML) 3 Page - Texas Instruments

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RESET
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A0
A1
P0
P1
P2
P3
GND
VCC
SDA
SCL
INT
P7
P6
P5
P4
TCA9538
www.ti.com
SCPS199C – AUGUST 2014 – REVISED OCTOBER 2015
5 Pin Configuration and Functions
PW, DB Package
16-Pin TSSOP, SSOP
Top View
Pin Functions
PIN
DESCRIPTION
NAME
NO.
A0
1
Address input. Connect directly to VCC or ground.
A1
2
Address input. Connect directly to VCC or ground.
RESET
3
Active-low reset input. Connect to VCC through a pull-up resistor if no active connection is used.
P0
4
P-port input/output. Push-pull design structure. At power on, P0 is configured as an input.
P1
5
P-port input/output. Push-pull design structure. At power on, P1 is configured as an input.
P2
6
P-port input/output. Push-pull design structure. At power on, P2 is configured as an input.
P3
7
P-port input/output. Push-pull design structure. At power on, P3 is configured as an input.
GND
8
Ground
P4
9
P-port input/output. Push-pull design structure. At power on, P4 is configured as an input.
P5
10
P-port input/output. Push-pull design structure. At power on, P5 is configured as an input.
P6
11
P-port input/output. Push-pull design structure. At power on, P6 is configured as an input.
P7
12
P-port input/output. Push-pull design structure. At power on, P7 is configured as an input.
INT
13
Interrupt output. Connect to VCC through a pull-up resistor.
SCL
14
Serial clock bus. Connect to VCC through a pull-up resistor.
SDA
15
Serial data bus. Connect to VCC through a pull-up resistor.
VCC
16
Supply voltage
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