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PCA9306DCTR

2-bit bidirectional I2C bus and SMBus voltage-level shifter

Availability: 44,775

Packaging

Package | PIN: SSOP (DCT) | 8
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.52
10-24 $0.47
25-99 $0.43
100-249 $0.37
250-499 $0.34
500-749 $0.28
750-999 $0.22
1000+ $0.20

Features

  • 2-Bit bidirectional translator for SDA and SCL lines in mixed-mode I2C Applications
  • I2C and SMBus Compatible
  • Less than 1.5-ns Maximum Propagation Delay to Accommodate Standard-mode and Fast-mode I2C Devices and Multiple Masters
  • Allows Voltage-level Translation Between
    • 1.2-V VREF1 and 1.8-V, 2.5-V, 3.3-V,
      or 5-V VREF2
    • 1.8-V VREF1 and 2.5-V, 3.3-V, or 5-VVREF2
    • 2.5-V VREF1 and 3.3-V or 5-VVREF2
    • 3.3-V VREF1 and 5-V VREF2
  • Provides Bidirectional Voltage Translation with no Direction Pin
  • Low 3.5-Ω ON-state Resistance Between Input and Output Ports Provides Less Signal Distortion
  • Open-drain I2C I/O ports (SCL1, SDA1, SCL2, and SDA2)
  • 5-V Tolerant I2C 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
  • Latch-up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 1000-V Charged-Device Model (C101)

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Texas Instruments  PCA9306DCTR

The PCA9306 device is a dual bidirectional I2C and SMBusvoltage-level translator with an enable (EN) input, and is operational from 1.2-V to 3.3-VVREF1 and 1.8-V to 5.5-V VREF2.

The PCA9306 device allows bidirectional voltage translations between 1.2 V and 5 V,without the use of a direction pin. The low ON-state resistance (RON) of theswitch allows connections to be made with minimal propagation delay. When EN is high, thetranslator 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 switchis off, and a high-impedance state exists between ports.

In addition to voltage translation, the PCA9306 device can be used to isolate a 400-kHzbus from a 100-kHz bus by controlling the EN pin to disconnect theslower bus during fast-mode communication.