SN74AVCB164245-Q1 - Automotive Catalog 16-Bit Dual-Supply Bus Transceiver w/ Config Voltage Translation, 3-State output

This 16-bit (dual-octal) noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track V_CCA. V_CCA accepts any supply voltage from 1.4 V to 3.6 V. The B port is designed to track V_CCB. V_CCB accepts any supply voltage from 1.4 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.

The SN74AVCB164245 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 be used to disable the outputs so the buses are effectively isolated.

The SN74AVCB164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by V_CCB.

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

This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. If either V_CC input is at GND, both ports are in the high-impedance state.

• Qualified for Automotive Applications
• Member of the Texas Instruments Widebus™ Family
• DOC™ Circuitry Dynamically Changes Output Impedance,
  Resulting in Noise Reduction Without Speed Degradation
• Dynamic Drive Capability Is Equivalent to Standard Outputs
  With I_OH and I_OL of ±24 mA at 2.5-V V_CC
• Control Inputs V_IH/V_IL Levels Are
  Referenced to V_CCB Voltage
• If Either V_CC Input Is at GND, Both Ports
  Are in the High-Impedance State
• Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode
  Data Communications
• I_off Supports Partial-Power-Down Mode Operation
• Fully Configurable Dual-Rail Design Allows Each Port to Operate
  Over Full 1.4-V to 3.6-V Power-Supply Range
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)
  • 750-V Charged-Device Model (C101)

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