CAXC4T245QBQBRQ1

The SN74AXC4T245-Q1 device, compliant with the AEC-Q100 standard, is a four-bit in-phase bus transceiver with two independently configurable power supply rails. This device can operate normally when the supply voltages of VCCA and VCCB are as low as 0.65V. Port A is used to track VCCA and can support any supply voltage in the range of 0.65V to 3.6V. Port B is used to track VCCB and can also support any supply voltage in the range of 0.65V to 3.6V. Additionally, the SN74AXC4T245-Q1 is also compatible with single-supply systems. The SN74AXC4T245-Q1 device is designed to enable asynchronous communication between data buses. Based on the logic levels of the direction control inputs (DIR1 and 2DIR), this device transfers data from Bus A to Bus B or from Bus B to Bus A. The output enable inputs (1OE and 2OE) can be used to disable the outputs, effectively isolating the buses. The SN74AXC4T245-Q1 device is designed so that the control pins (xDIR and xOE) are referenced to VCCA. To ensure that the level shifter I/Os are in a high-impedance state during power-up or power-down, the xOE pin should be connected to VCCA through a pull-up resistor. This device is fully suitable for partial power-down applications using Ioff current. When the device is powered down, the Ioff protection circuit ensures that no excess current is drawn from or supplied to the inputs, outputs, or combined I/Os biased to a specific voltage. The VCC isolation feature ensures that when VCCA or VCCB is below 100mV, the I/O ports disable their outputs and enter a high-impedance state. The glitch-free power sequencing allows the power supply rails to be turned on or off in any order, providing robust power sequencing performance.

Applications

• Infotainment system audio head unit
• ADAS fusion
• ADAS front camera
• HEV and EV battery management system
• Telematics control unit

Key features

• AEC-Q100 qualified for automotive applications
• Available in Wettable Flank QFN (WBQB) package
• Fully configurable dual-rail design allowing each port to operate at supply voltages from 0.65V to 3.6V
• Operating temperature range: –40°C to +125°C
• Multidirectional control pin supporting synchronous direction switching
• Glitch-free power sequencing
• Translation rate up to 380Mbps for 1.8V to 3.3V level shifting
• VCC isolation: all I/O outputs disabled and driven to high-impedance state when any VCC input falls below 100mV
• Ioff supports partial power-down mode operation
• Compatible with AVC series level translators
• Latch-up performance exceeds 100mA per JESD 78 Class II
• ESD protection exceeds JEDEC JS-001: 8000V Human Body Model, 1000V Charged Device Model