SN74AVC32T245 (ACTIVE)

32-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

 

Description

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.

Features

  • Member of the Texas Instruments Widebus+™
    Family
  • Control Inputs VIH/VIL Levels Referenced to VCCA
    Voltage
  • 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)

Applications

  • Personal Electronics
  • Industrial
  • Enterprise
  • Telecom

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Parametrics Compare all products in Direction Controlled Voltage Translation

 
Technology Family
Bits (#)
VCC (Min) (V)
VCC (Max) (V)
Voltage (Nom) (V)
F @ Nom Voltage (Max) (Mhz)
ICC @ Nom Voltage (Max) (mA)
Rating
Operating Temperature Range (C)
Pin/Package
SN74AVC32T245 SN74AVCH32T245
AVC    AVC   
32    32   
1.2    1.2   
3.6    3.6   
1.2
1.5
1.8
2.5
3.3   
1.2
1.5
1.8
2.5
3.3   
100    100   
0.09    0.09   
Catalog    Catalog   
-40 to 85    -40 to 85   
96BGA MICROSTAR JUNIOR
96LFBGA   
96LFBGA