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TCA6416A

ACTIVE

16-bit translating 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers

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Data sheet

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TCAL6416 ACTIVE 16-bit translating I²C-bus/SMBus I/O expander with interrupt, reset and agile I/O configuration Enhanced version of TCA6416A with wider supply voltage range and agile I/O configuration registers

TCA6416A

ACTIVE
Data sheet Order now

Product details

Number of I/Os 16 Features Adjustable I/O level, Configuration registers, Interrupt pin, Reset pin Addresses 2 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
Number of I/Os 16 Features Adjustable I/O level, Configuration registers, Interrupt pin, Reset pin Addresses 2 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
WQFN (RTW) 24 16 mm² (4 mm × 4 mm) TSSOP (PW) 24 49.92 mm² (7.8 mm × 6.4 mm)
  • I2C to parallel port expander
  • Operating power-supply voltage range of 1.65 V to 5.5 V
  • Allows bidirectional voltage-level translation and GPIO expansion between 1.8-V, 2.5-V, 3.3-V, and 5-V I2C Bus and P-ports
  • Low standby current consumption of 3 µA
  • 5-V Tolerant I/O ports
  • 400-kHz Fast I2C bus
  • Hardware address pin allows two TCA6416A devices on the same I2C/SMBus bus
  • Active-low reset input ( RESET)
  • Open-drain active-low interrupt output ( INT)
  • Input/output configuration register
  • Polarity inversion register
  • Internal power-on reset
  • Power-up with all channels configured as inputs
  • No glitch on power up
  • Noise filter on SCL and SDA inputs
  • Latched outputs with high-current drive maximum 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)
    • 200-V Machine model (A115-A)
    • 1000-V Charged-device model (C101)
  • I2C to parallel port expander
  • Operating power-supply voltage range of 1.65 V to 5.5 V
  • Allows bidirectional voltage-level translation and GPIO expansion between 1.8-V, 2.5-V, 3.3-V, and 5-V I2C Bus and P-ports
  • Low standby current consumption of 3 µA
  • 5-V Tolerant I/O ports
  • 400-kHz Fast I2C bus
  • Hardware address pin allows two TCA6416A devices on the same I2C/SMBus bus
  • Active-low reset input ( RESET)
  • Open-drain active-low interrupt output ( INT)
  • Input/output configuration register
  • Polarity inversion register
  • Internal power-on reset
  • Power-up with all channels configured as inputs
  • No glitch on power up
  • Noise filter on SCL and SDA inputs
  • Latched outputs with high-current drive maximum 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)
    • 200-V Machine model (A115-A)
    • 1000-V Charged-device model (C101)

The TCA6416A is a 24-pin device that provides 16-bits of general purpose parallel input/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 on the I2C bus side (VCCI) and a power supply voltage ranging from 1.65 V to 5.5 V on the P-port side (VCCP).

The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6416A provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.

The TCA6416A is a 24-pin device that provides 16-bits of general purpose parallel input/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 on the I2C bus side (VCCI) and a power supply voltage ranging from 1.65 V to 5.5 V on the P-port side (VCCP).

The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6416A provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.
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Technical documentation

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* Data sheet TCA6416A Low-Voltage 16-Bit I2C and SMBus I/O Expander With Voltage Translation, Interrupt Output, Reset Input, and Configuration Registers datasheet (Rev. F) PDF | HTML Jan 30, 2023
Application note How to Configure an I2C Push-Pull IO Expander to Operate as Open Drain PDF | HTML Jul 17, 2024
Application note I2C: What is the Auto Increment Feature? PDF | HTML Jul 5, 2024
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML Jul 3, 2024
Application note I2C Dynamic Addressing Apr 25, 2019
Application note Choosing the Correct I2C Device for New Designs PDF | HTML Sep 7, 2016
Selection guide I2C Infographic Flyer Dec 3, 2015
Application note Understanding the I2C Bus PDF | HTML Jun 30, 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters May 15, 2015
Application note I2C Bus Pull-Up Resistor Calculation PDF | HTML Feb 13, 2015

Design & development

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

Evaluation board

IO-EXPANDER-EVM — IO-EXPANDER-EVM: I2C and SMBus IO Expander Evaluation Module

The IO expander evaluation module (EVM) lets you evaluate TI's portfolio of SMBus and I2C IO expander line devices. The TCA6424A and TCA9539 come installed on the board. The 24-pin TSSOP footprint also supports TCA6408A, TCA6416A, TCA9534, TCA9534A, TCA9535, TCA9538, TCA9554, TCA9554A and TCA9555.

User guide: PDF
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Firmware

SLVC564 — I/O Expander Software and Firmware Package

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Simulation model

TCA6416A IBIS Model

SCPM030.ZIP (119 KB) - IBIS model
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Design tool

I2C-DESIGNER — I2C designer tool

Use the I2C Designer tool to quickly resolve conflicts in addressing, voltage level and frequency in I2C based designs. Enter master and slave inputs to automatically generate an I2C tree or easily build a custom solution. This tool will help designers save time and comply with the I2C standard (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
WQFN (RTW) 24 Ultra Librarian
TSSOP (PW) 24 Ultra Librarian
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