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The SN74AXC8T245-Q1 is an 8-bit non-inverting bus transceiver designed to resolve voltage level mismatches between devices operating at the latest voltage nodes (0.7V, 0.8V, and 0.9V) and devices operating at industry-standard voltage nodes (1.8V, 2.5V, and 3.3V). The device operates from two independent supply rails (VCCA and VCCB), with operating voltages as low as 0.65V. Data pins A1 through A8 track VCCA and support supply voltages from 0.65V to 3.6V. Data pins B1 through B8 track VCCB and support supply voltages from 0.65V to 3.6V. The SN74AXC8T245-Q1 is designed for asynchronous communication between data buses. Based on the logic levels of the direction control inputs (DIR1 and DIR2), the device transfers data from the A bus to the B bus, or from the B bus to the A bus. The output enable (OE) input can be used to disable the outputs, effectively isolating the buses. The SN74AXC8T245-Q1 is designed so that the control pins (DIR and OE) are referenced to VCCA. This device is intended for partial power-down applications using Ioff. When the device is powered down, the Ioff circuitry disables the outputs. This suppresses current backflow into the device, thereby preventing device damage. The VCC isolation feature ensures that when either VCC input supply falls below 100mV, all level-shifter outputs are disabled and placed in a high-impedance state. To ensure that the level-shifter I/Os remain in a high-impedance state during power-up or power-down, OE should be connected to VCCA through a pull-up resistor; the minimum value of this resistor is determined by the sink current capability of the driver.

Applications

• Infotainment Systems
• Head Units
• ADAS Fusion
• ADAS Front Camera
• HEV Battery Management Systems

Key features

• AEC-Q100 qualified for automotive applications
• Wettable flank QFN (WRGY) package
• Certified, fully configurable dual supply rail design supporting per-port operation from 0.65V to 3.6V supply voltage range
• Operating temperature range: –40℃ to +125℃
• Multidirectional control pin supporting simultaneous rising and falling edge translation
• Translation rate up to 380Mbps for 1.8V to 3.3V conversion
• VCC isolation for effective bus isolation during power-down
• Partial power-down mode to limit back-current flow during power-down
• Compatible with SN74AVC8T245-Q1 level translator
• Latch-up performance exceeds 100mA per JESD 78 Class II