PCA9306 デュアル、双方向 I2C バス/ SMBus 電圧レベル・変換 | TIJ.co.jp

PCA9306 (供給中) デュアル、双方向 I2C バス/ SMBus 電圧レベル・変換

 

概要

The PCA9306 device is a dual bidirectional I2C and SMBus voltage-level translator with an enable (EN) input, and is operational from 1.2-V to 3.3-V VREF1 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 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 PCA9306 device can be used to isolate a 400-kHz bus from a 100-kHz bus by controlling the EN pin to disconnect the slower bus during fast-mode communication.

特長

  • 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-V VREF2
    • 2.5-V VREF1 and 3.3-V or 5-V VREF2
    • 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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機能一覧

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Part number オーダー・オプション VCCA (Min) (V) VCCA (Max) (V) VCCB (Min) (V) VCCB (Max) (V) Supply restrictions Frequency (Max) (kHz) Features Operating temperature range (C) Approx. price (US$) Package Group Rating
PCA9306 ご注文 1.2     3.3     1.8     5.5     VCCA <= VCCB     400     Enable Pin     -40 to 85     0.20 | 1ku     DSBGA | 8
SM8 | 8
VSSOP | 8
X2SON | 8    
Catalog    
PCA9306-Q1 ご注文 1.2     5.5     1.8     5.5     VCCA <= VCCB     400     Enable Pin     -40 to 105     0.24 | 1ku     VSSOP | 8     Automotive    
TCA9406 ご注文 1.65     3.6     2.3     5.5     VCCA <= VCCB     1000     Enable Pin     -40 to 85     0.30 | 1ku     DSBGA | 8
SM8 | 8
VSSOP | 8    
Catalog