SN74AVC16T245-Q1 - Automotive 16-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation

The SN74AVC16T245-Q1 is a 16-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The SN74AVC16T245-Q1 is optimized to operate with V_CCA or V_CCB set at 1.4 V to 3.6 V. It is operational with V_CCA or V_CCB as low as 1.2 V. The A port is designed to track V_CCA. V_CCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track V_CCB. V_CCB 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, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.

The SN74AVC16T245-Q1 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 effectively are isolated.

The SN74AVC16T245-Q1 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by V_CCA.

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.

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

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

• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
  • Device Temperature Grade 1: –40°C to 125°C
    Ambient Operating Temperature Range
  • Device HBM ESD Classification Level H3B
    (JESD 22 A114-A)
  • Device CDM ESD Classification Level C5
    (JESD 22 C101)
• Control Inputs V_IH/V_IL Levels Are Referenced to
  V_CCA Voltage
• V_CC Isolation Feature – If Either V_CCInput is at
  GND, Both Ports Are in the High-Impedance State
• Fully Configurable Dual-Rail Design Allows Each
  Port to Operate Over the Full 1.2-V to 3.6-V
  Power-Supply Range
• I_off Supports Partial-Power-Down Mode Operation
• I/Os Are 4.6-V Tolerant
• Maximum Data Rates
  • 380 Mbps (1.8-V to 3.3-V Translation)
  • 200 Mbps (<1.8-V to 3.3-V Translation)
  • 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