Product details


Frequency (Max) (kHz) 1000 VCCA (Min) (V) 1.08 VCCA (Max) (V) 3.6 VCCB (Min) (V) 1.08 VCCB (Max) (V) 3.6 Supply restrictions None Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other I2C level shifters, buffers & hubs

Package | Pins | Size

SOT-23-THN (DDF) 8 8 mm² 2.9 x 2.8 X2SON (DTM) 8 open-in-new Find other I2C level shifters, buffers & hubs


  • 2-bit bidirectional translator for SDA and SCL lines in I2C applications
  • Provides bidirectional voltage translation with no direction pin
  • High-impedance output SCL_A, SDA_A, SCL_B, SDA_B pins when OE = 0 V or VCC = 0 V
  • Internal 10-kΩ pull-up resistor on all SDA and SCL pins are enabled based on respective VCC voltage
  • 1.08 V to 3.6 V on both A and B ports
  • VCC Isolation feature: If either VCC input is at GND, both ports are in the high-impedance state (excluding pull-ups)
  • No power-supply sequencing required: either VCCA or VCCB can be ramped first
  • Low Ioff of 2.5 µA when either VCCA or VCCB = 0 V
  • OE input can be tied directly to VCCA or controlled by GPIO
  • Latch-up performance exceeds 100 mA per JESD 78, class II
  • ESD Protection exceeds JESD 22
    • 2500-V Human-body model (A114-B)
    • 1500-V Charged-device model (C101)
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The TCA9416 is a 2-bit bidirectional I2C and SMBus voltage-level translator with an output enable (OE) input and rising and falling edge accelerators. It is operational from 1.08 V to 3.6 V on both the A-side and B-side. This allows the device to interface between lower and higher logic signal levels at any of the typical 1.2-V, 1.8-V, 2.5-V, and 3.3-V supply rails.

The OE input pin is referenced to VCCA, can be tied directly to VCCA, but it is also 3.6-V tolerant. The OE pin can also be controlled and set to a logic low to place all the SCL and SDA pins in a high-impedance state, which significantly reduces the quiescent current consumption.

Under normal I2C and SMBus configurations, the TCA9416 is compatible with standard speeds where the frequency of SCL is 100 kHz (Standard-mode), 400 kHz (Fast-mode), or 1 MHz (Fast-mode Plus).

The TCA9416 features internal 10-kΩ pull-up resistors on SCL_A, SDA_A, SCL_B, and SDA_B. Additional external pull-up resistors can be added to the bus to reduce the total pull-up resistance and speed up rising edges.


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Technical documentation

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Type Title Date
* Data sheet TCA9416 Ultra-Low-Voltage I2C Translator with Rise Time Accelerators datasheet (Rev. A) Aug. 06, 2021
User guide TCA9416 Evaluation Module Mar. 08, 2021
Certificate TCA9416EVM EU Declaration of Conformity (DoC) Feb. 25, 2021

Design & development

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

Hardware development

document-generic User guide

This EVM provides configurable loading conditions through adjustable pull up resistors and bus capacitance which allows designers to easily test the performance of this device in their system.

  • Dip switches to configure capacitive loading
  • TCA9416DDF package layout included but not populated
  • Adjustable pull up resistors

Design tools & simulation

SCPM047.ZIP (63 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
I2C designer tool
I2C-DESIGNER — 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 with (...)
  • GUI-based web application
  • Exportable designs
  • JSON file uploader
  • Bill of materials generator

CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDF) 8 View options
X2SON (DTM) 8 View options

Ordering & quality

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