SN74AVC32T245 具有可配置电压转换和 3 态输出的 32 位双电源总线收发器 | 德州仪器

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具有可配置电压转换和 3 态输出的 32 位双电源总线收发器



This 32-bit noninverting bus transceiver uses two separate, configurable power-supply rails. The SN74AVC32T245 device is optimized to operate with VCCA/VCCB set from 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. The A port is designed to track VCCA. VCCA and accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB and accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.2 V, 1.5V, 1.8 V, 2.5 V, and 3.3 V voltage nodes.

The SN74AVC32T245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can disable the outputs so the buses are effectively isolated.

The SN74AVC32T245 is designed so that the control pins (1DIR, 2DIR, 3DIR, 4DIR, 1OE, 2OE, 3OE, and 4OE) are supplied by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature ensures that if either VCC input is at GND, then both ports are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.


  • Member of the Texas Instruments Widebus+™
  • Control Inputs VIH/VIL Levels Referenced to VCCA
  • VCC Isolation Feature – If Either VCC Input is at
    GND, Both Ports are in the High-Impedance State
  • Overvoltage-Tolerant Inputs/Outputs Allow Mixed-
    Voltage-Mode Data Communications
  • Fully Configurable Dual-Rail Design Allows Each
    Port to Operate Over Full 1.2 V to 3.6 V Power-
    Supply Range
  • Ioff Supports Partial-Power-Down Mode Operation
  • 4.6 V Tolerant I/Os
  • Max Data Rates
    • 380 Mbps (1.8 V to 3.3 V Level-Shifting)
    • 200 Mbps (< 1.8 V to 3.3 V Level-Shifting)
    • 200 Mbps (Translate to 2.5 V or 1.8 V)
    • 150 Mbps (Translate to 1.5 V)
    • 100 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 4000 V Human-Body Model (A114-A)
    • 200 V Machine Model (A115-A)
    • 1000 V Charged-Device Model (C101)


  • Personal Electronics
  • Industrial
  • Enterprise
  • Telecom

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与其它产品相比 方向控制电压转换 邮件 下载到电子表格中
Part number 立即下单 Technology Family Bits (#) High input voltage (Min) (Vih) High input voltage (Max) (Vih) Output voltage (Min) (V) Output voltage (Max) (V) IOH (Max) (mA) IOL (Max) (mA) Package Group Rating
SN74AVC32T245 立即下单 AVC     32     0.78     3.6     1.2     3.6     -12     12     BGA MICROSTAR JUNIOR | 96
LFBGA | 96    
SN74AVCH32T245 无样片 AVC     32     1     3.6     1.2     3.6     -12     12     LFBGA | 96     Catalog