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TCA9554DBQR Datasheet(PDF) 3 Page - Texas Instruments

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Part # TCA9554DBQR
Description  TCA9554 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TCA9554DBQR Datasheet(HTML) 3 Page - Texas Instruments

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PW, DB, OR DBQ PACKAGE
(TOP VIEW)
VCC
TCA9554
www.ti.com
SCPS233D – MARCH 2012 – REVISED AUGUST 2015
5 Pin Configuration and Functions
Pin Functions
PIN
I/O
DESCRIPTION
NAME
NO.
A0
1
I
Address input. Connect directly to VCC or ground.
A1
2
I
Address input. Connect directly to VCC or ground.
A2
3
I
Address input. Connect directly to VCC or ground.
P-port input/output. Push-pull design structure. At power on, P0 is configured
P0
4
I/O
as an input.
P-port input/output. Push-pull design structure. At power on, P1 is configured
P1
5
I/O
as an input.
P-port input/output. Push-pull design structure. At power on, P2 is configured
P2
6
I/O
as an input.
P-port input/output. Push-pull design structure. At power on, P3 is configured
P3
7
I/O
as an input.
GND
8
Ground
P-port input/output. Push-pull design structure. At power on, P4 is configured
P4
9
I/O
as an input.
P-port input/output. Push-pull design structure. At power on, P5 is configured
P5
10
I/O
as an input.
P-port input/output. Push-pull design structure. At power on, P6 is configured
P6
11
I/O
as an input.
P-port input/output. Push-pull design structure. At power on, P7 is configured
P7
12
I/O
as an input.
INT
13
O
Interrupt output. Connect to VCC through a pull-up resistor.
SCL
14
I
Serial clock bus. Connect to VCC through a pull-up resistor.
SDA
15
I/O
Serial data bus. Connect to VCC through a pull-up resistor.
VCC
16
Supply voltage
Copyright © 2012–2015, Texas Instruments Incorporated
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