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I2C & I3C level shifters, buffers & hubs

TCA39306

AKTIV

Spannungsumsetzer für FM+ I²C-Bus und SMBus

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TCA39306

AKTIV
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Produktdetails

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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Typ Titel Datum
* Data sheet TCA39306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator datasheet (Rev. B) PDF | HTML 28 Mär 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 Jan 2024
Application brief Best Practices: I2C Devices on an I3C Shared Bus PDF | HTML 30 Mär 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 Mai 2021

Design und Entwicklung

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Evaluierungsplatine

TCA39306EVM — TCA39306-Evaluierungsmodul für Niederspannungs-I²C-Pegelumsetzer

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