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TCA39306

AKTIV

Spannungsumsetzer für FM+ I²C-Bus und SMBus

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
VSSOP (DCU) 8 6.2 mm² (2 mm × 3.1 mm) SOT-23-THN (DDF) 8 8.12 mm² (2.9 mm × 2.8 mm) X2SON (DTM) 8 1.08 mm² (0.8 mm × 1.35 mm)
  • 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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TCA39306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator datasheet (Rev. B) PDF | HTML 28.03.2023
Anwendungshinweis PassFET Hang Time with TCA39306 I2C, I3C Level Translator PDF | HTML 23.09.2024
Anwendungshinweis Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03.07.2024
Application brief I3C Voltage Translator and Multiplexer Quick Reference PDF | HTML 04.01.2024
Application brief Best Practices: I2C Devices on an I3C Shared Bus PDF | HTML 30.03.2023
Application brief I3C - Next Generation Serial Communication Interface PDF | HTML 24.02.2022

Design und Entwicklung

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Evaluierungsplatine

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