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TCA9535DBT Datasheet(PDF) 1 Page - Texas Instruments

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Part # TCA9535DBT
Description  Low-Voltage 16-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

TCA9535DBT Datasheet(HTML) 1 Page - Texas Instruments

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TCA9535
SDA
I
2C or SMBus Master
(e.g. Processor)
SCL
INT
VCC
GND
A0
P00
P01
P02
P03
P04
P05
P06
P07
Peripheral
Devices
x
RESET, EN or
Control Inputs
x
INT or status
outputs
x
LEDs
x
Keypad
A1
A2
P10
P11
P12
P13
P14
P15
P16
P17
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TCA9535
SCPS201D – AUGUST 2009 – REVISED JULY 2016
TCA9535 Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander
with Interrupt Output and Configuration Registers
1
1 Features
1
I2C to Parallel Port Expander
Wide Power Supply Voltage Range of 1.65 V to
5 V
Low Standby-Current Consumption
Open-Drain Active-Low Interrupt Output
5-V Tolerant I/O Ports
400-kHz Fast I2C Bus
Polarity Inversion Register
Address by Three Hardware Address Pins for Use
of up to Eight Devices
Latched Outputs With High-Current Drive
Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
2000-V Human-Body Model (A114-A)
1000-V Charged-Device Model (C101)
2 Applications
Servers
Routers (Telecom Switching Equipment)
Personal Computers
Personal Electronics (For Example, Gaming
Consoles)
Industrial Automation
Products With GPIO-Limited Processors
3 Description
The TCA9535 is a 24-pin device that provides 16 bits
of general purpose parallel input and output (I/O)
expansion for the two-line bidirectional I2C bus or
(SMBus) protocol. The device can operate with a
power supply voltage ranging from 1.65 V to 5.5 V.
The TCA9535 consists of two 8-bit Configuration
(input or output selection), Input Port, Output Port,
and Polarity Inversion (active-high or active-low
operation) registers. At power on, the I/Os are
configured as inputs. The system master can enable
the I/Os as either inputs or outputs by writing to the
I/O configuration bits.
The TCA9535 is identical to the TCA9555, except
that the TCA9535 does not include the internal I/O
pull-up resistor, which requires pull-ups and pull-
downs on unused I/O pins when configured as an
input and undriven.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TCA9535
TSSOP (24)
7.80 mm x 4.40 mm
SSOP (24)
6.20 mm x 5.30 mm
WQFN (24)
4.00 mm x 4.00 mm
VQFN (24)
4.00 mm x 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram


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