Texas Instruments SN74AXC4T245/SN74AXC4T245-Q1 Bus Transceiver
Texas Instruments SN74AXC4T245/SN74AXC4T245-Q1 4-bit Dual-Supply Bus Transceiver utilizes two individual, fully configurable power-supply rails that allow each port to operate with a power supply range from 0.65V to 3.6V. The SN74AXC4T245 is operational with VCCA and VCCB supplies as low as 0.65V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65V to 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65V to 3.6V.
The SN74AXC4T245 is ideal 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 of the direction-control inputs (1DIR and 2DIR). The device is fully specified for partial-power-down applications using the Ioff current, which ensures that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down. The SN74AXC4T245 VCC isolation feature ensures that if either VCCA or VCCB is less than 100mV, both I/O ports enter a high-impedance state by disabling the user's outputs. Additionally, the glitch-free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance. The Texas Instruments SN74AXC4T245-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- A fully configurable dual-rail design allows each port to operate with a power supply range from 0.65V to 3.6V
- Operating temperature from –40°C to +125°C
- Multiple direction control pins to allow simultaneous up and down translation
- Glitch-free power supply sequencing
- Up to 380Mbps support when translating from 1.8V to 3.3V
- VCC isolation feature
- Ioff supports partial-power-down mode operation
- Compatible with AVC family-level shifters
- Latch-up performance exceeds 100mA per JESD 78, Class II
- ESD protection exceeds JESD 22
- 8000V human-body model
- 1000V charged-device model
- If either VCC input is below 100mV, all I/Os outputs are disabled and become high-impedance
Applications
- Enterprise and communications
- Industrial
- Personal electronics
- Wireless infrastructure
- Building automation
- Point of sale
Datasheets
Block Diagram
