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I2C & I3C level shifters, buffers & hubs

TCA39306

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Traductor de tensión de SMBus y bus FM+ I²C

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TCA39306

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Detalles del producto

Features Enable pin Protocols I2C, I3C Frequency (max) (MHz) 12.5 VCCA (min) (V) 0.85 VCCA (max) (V) 5.5 VCCB (min) (V) 1.65 VCCB (max) (V) 5.5 Supply restrictions VCCA <= VCCB Rating Catalog Operating temperature range (°C) -40 to 125
Features Enable pin Protocols I2C, I3C Frequency (max) (MHz) 12.5 VCCA (min) (V) 0.85 VCCA (max) (V) 5.5 VCCB (min) (V) 1.65 VCCB (max) (V) 5.5 Supply restrictions VCCA <= VCCB Rating Catalog Operating temperature range (°C) -40 to 125
SOT-23-THN (DDF) 8 8.12 mm² 2.9 x 2.8 VSSOP (DCU) 8 6.2 mm² 2 x 3.1 X2SON (DTM) 8 1.08 mm² 0.8 x 1.35
  • 2-Bit bidirectional translator for SDA and SCL lines in mixed-mode I 2C applications
  • Standard-mode, fast-mode, and fast-mode plus I 2C and SMBus compatible
  • I 3C compatible (12.5 MHz supported)
  • Allows voltage-level translation between
    • 0.9-V V REF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V V REF2
    • 1.2-V V REF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V V REF2
    • 1.8-V V REF1 and 2.5-V, 3.3-V, or 5-V V REF2
    • 2.5-V V REF1 and 3.3-V or 5-V V REF2
    • 3.3-V V REF1 and 5-V V REF2
  • Provides bidirectional voltage translation with no direction Pin
  • Low ON-state resistance between input and output ports provides less signal distortion
  • Open-drain I 2C I/O ports (SCL1, SDA1, SCL2, and SDA2)
  • 5-V Tolerant I 2C I/O ports to support mixed-mode signal operation
  • High-impedance SCL1, SDA1, SCL2, and SDA2 pins for EN = Low
  • Lockup-free operation for isolation when EN = Low
  • Flow-through pinout for ease of printed-circuit-board trace routing
  • ESD Protection Exceeds JESD 22
    • 2000-V human-body model (A114-A)
    • 1000-V charged-device model (C101)
  • 2-Bit bidirectional translator for SDA and SCL lines in mixed-mode I 2C applications
  • Standard-mode, fast-mode, and fast-mode plus I 2C and SMBus compatible
  • I 3C compatible (12.5 MHz supported)
  • Allows voltage-level translation between
    • 0.9-V V REF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V V REF2
    • 1.2-V V REF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V V REF2
    • 1.8-V V REF1 and 2.5-V, 3.3-V, or 5-V V REF2
    • 2.5-V V REF1 and 3.3-V or 5-V V REF2
    • 3.3-V V REF1 and 5-V V REF2
  • Provides bidirectional voltage translation with no direction Pin
  • Low ON-state resistance between input and output ports provides less signal distortion
  • Open-drain I 2C I/O ports (SCL1, SDA1, SCL2, and SDA2)
  • 5-V Tolerant I 2C I/O ports to support mixed-mode signal operation
  • High-impedance SCL1, SDA1, SCL2, and SDA2 pins for EN = Low
  • Lockup-free operation for isolation when EN = Low
  • Flow-through pinout for ease of printed-circuit-board trace routing
  • ESD Protection Exceeds JESD 22
    • 2000-V human-body model (A114-A)
    • 1000-V charged-device model (C101)

The TCA39306 is a dual bidirectional voltage-level translator compatible with I 2C, SMBus, and I 3C with an enable (EN) input, and is operational from 0.9-V to 3.3-V V REF1 and 1.8-V to 5.5-V V REF2.

The device allows bidirectional voltage translations between 0.85 V and 5 V, without the use of a direction pin. The low ON-state resistance (R ON) of the switch allows connections to be made with minimal propagation delay. When EN is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively, allowing bidirectional data flow between ports. When EN is low, the translator switch is off, and a high-impedance state exists between ports.

In addition to voltage translation, the TCA39306 can be used to isolate a higher speed bus from a lower speed bus by controlling the EN pin to disconnect the slower bus during fast-mode communication.

The TCA39306 is a dual bidirectional voltage-level translator compatible with I 2C, SMBus, and I 3C with an enable (EN) input, and is operational from 0.9-V to 3.3-V V REF1 and 1.8-V to 5.5-V V REF2.

The device allows bidirectional voltage translations between 0.85 V and 5 V, without the use of a direction pin. The low ON-state resistance (R ON) of the switch allows connections to be made with minimal propagation delay. When EN is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively, allowing bidirectional data flow between ports. When EN is low, the translator switch is off, and a high-impedance state exists between ports.

In addition to voltage translation, the TCA39306 can be used to isolate a higher speed bus from a lower speed bus by controlling the EN pin to disconnect the slower bus during fast-mode communication.
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Documentación técnica

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* Data sheet TCA39306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator datasheet (Rev. B) PDF | HTML 28 mar 2023
Application note PassFET Hang Time with TCA39306 I2C, I3C Level Translator PDF | HTML 23 sep 2024
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 jul 2024
Application brief I3C Voltage Translator and Multiplexer Quick Reference PDF | HTML 04 ene 2024
Application brief Best Practices: I2C Devices on an I3C Shared Bus PDF | HTML 30 mar 2023
Application brief I3C - Next Generation Serial Communication Interface PDF | HTML 24 feb 2022
EVM User's guide TCA39306 EVM User's Guide PDF | HTML 11 may 2021

Diseño y desarrollo

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Placa de evaluación

TCA39306EVM — TCA39306 Módulo de evaluación de baja tensión con selector de nivel I²C

Este EVM proporciona condiciones de carga configurables a través de resistencias de subida ajustables y capacitancia del bus, lo que permite a los diseñadores probar fácilmente el rendimiento de este dispositivo en su sistema.

Guía del usuario: PDF | HTML
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Modelo de simulación

TCA39306 IBIS Model

SCPM048.ZIP (23 KB) - IBIS Model
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Herramienta de diseño

I2C-DESIGNER — Herramienta de diseño I2C

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 (...)
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de 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 (...)
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Herramienta de simulación

TINA-TI — Programa de simulación analógica basado en SPICE

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 (...)
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23-THN (DDF) 8 Ultra Librarian
VSSOP (DCU) 8 Ultra Librarian
X2SON (DTM) 8 Ultra Librarian
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Pedidos y calidad

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  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
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  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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