●This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB 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 SN74AVC2T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode . The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.
●The SN74AVC2T245 control pins (DIR1, DIR2, and OE) 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, both ports are in the high-impedance state.
●To ensure the high-impedance state during power up or power down, OE must be connected to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
● Each Channel Has Independent Direction Control
● Control Inputs VIH/VIL Levels Are Referenced to
●VCCA Voltage
● Fully Configurable Dual-Rail Design Allows Each
●Port to Operate Over the Full 1.2 V to
●3.6 V Power-Supply Range
● I/Os Are 4.6 V Tolerant
● Ioff Supports Partial-Power-Down Mode Operation
● VCC Isolation Feature - If Either VCC Input is at
●GND, Both Ports are in High-Impedance State
● Typical Data Rates
● 500 Mbps (1.8 V to 3.3 V Level-Shifting)
● 320 Mbps (<1.8 V to 3.3 V Level-Shifting)
● 320 Mbps (Translate to 2.5 V or 1.8 V)
● 280 Mbps (Translate to 1.5 V)
● 240 Mbps (Translate to 1.2 V)
● Latch-Up Performance Exceeds 100 mA Per
●JESD 78, Class II
● ESD Protection Exceeds JESD 22
● 5000 V Human-Body Model (A114-A)
● 200 V Machine Model (A115-A)
● 1500 V Charged-Device Model (C101)
