Product details

Number of I/Os 4 Features Configuration registers, Interrupt pin Supply voltage (Min) (V) 1.65 Supply voltage (Max) (V) 5.5 Addresses 4 Rating Catalog Frequency (Max) (kHz) 1000 Operating temperature range (C) -40 to 125
Number of I/Os 4 Features Configuration registers, Interrupt pin Supply voltage (Min) (V) 1.65 Supply voltage (Max) (V) 5.5 Addresses 4 Rating Catalog Frequency (Max) (kHz) 1000 Operating temperature range (C) -40 to 125
VSSOP (DGK) 8 15 mm² 3 x 4.9 X2SON (DTM) 8 1 mm² 0.8 x 1.35
  • I2C to GPIO expander
  • Operating power-supply voltage range of 1.65 V to 5.5 V
  • 5-V Tolerant I/O ports
  • Software Reset via I2C General Call
  • Software-enabled integrated pull-up resistors on P ports
  • P3 can be repurposed as INT output
  • 1-MHz Fast mode plus I2C bus
  • Input and output configuration register
  • Polarity inversion register
  • Internal power-on reset
  • Power-up with all channels configured as inputs
  • Noise filter on SCL and SDA inputs
  • Latched outputs with high-current drive maximum capability for directly driving LEDs
  • ESD protection exceeds JESD 22
    • 2000-V Human-body model (A114-A)
    • 1000-V Charged-device model (C101)
  • I2C to GPIO expander
  • Operating power-supply voltage range of 1.65 V to 5.5 V
  • 5-V Tolerant I/O ports
  • Software Reset via I2C General Call
  • Software-enabled integrated pull-up resistors on P ports
  • P3 can be repurposed as INT output
  • 1-MHz Fast mode plus I2C bus
  • Input and output configuration register
  • Polarity inversion register
  • Internal power-on reset
  • Power-up with all channels configured as inputs
  • Noise filter on SCL and SDA inputs
  • Latched outputs with high-current drive maximum capability for directly driving LEDs
  • ESD protection exceeds JESD 22
    • 2000-V Human-body model (A114-A)
    • 1000-V Charged-device model (C101)

The TCA9536 is a 4-bit I/O expander for the I2C bus and is designed for 1.65-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface.

The system controller can enable the I/Os as either inputs or outputs by writing to the I/O configuration register bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. There is an additional special function register that can be used to disable the internal pull-up resistors and P3 override to an INT output.

The TCA9536 open-drain interrupt output ( when P3 is configured as INT in the special function register) is activated when any input differs from its corresponding Input Port register state and is used to indicate to the system controller that an input state has changed.

The system processor can reset the TCA9536 in the event of a timeout or other improper operation by using an I2C soft reset command, which puts the registers in their default state.

spacer

The TCA9536 is a 4-bit I/O expander for the I2C bus and is designed for 1.65-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface.

The system controller can enable the I/Os as either inputs or outputs by writing to the I/O configuration register bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. There is an additional special function register that can be used to disable the internal pull-up resistors and P3 override to an INT output.

The TCA9536 open-drain interrupt output ( when P3 is configured as INT in the special function register) is activated when any input differs from its corresponding Input Port register state and is used to indicate to the system controller that an input state has changed.

The system processor can reset the TCA9536 in the event of a timeout or other improper operation by using an I2C soft reset command, which puts the registers in their default state.

spacer

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet TCA9536 Remote 4-Bit I2C and SMBus I/O Expander with Configuration Registers datasheet (Rev. A) 13 Dec 2021
Certificate TCA9536EVM EU RoHS Declaration of Conformity (DoC) 12 Oct 2021
User guide TCA9536EVM User's Guide 01 Sep 2021

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

In stock
Limit: 5
Evaluation board

TCA9536EVM — TCA9536 evaluation module for 4-bit I²C I/O expander

The TCA9536 evaluation module provides the user with options to test both the TCA9536 and TCA9537. The evaluation module allows for adjustable pull-up resistors on SDA/SCL as well as LED indicators on power up and the GPOs.

In stock
Limit: 5
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Package Pins Download
VSSOP (DGK) 8 View options
X2SON (DTM) 8 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos