SN74LVT245BPWR

产品概述

The SN74LVT245BPWR is an octal Bus Transceiver designed specifically for low-voltage (3.3V) VCC operation, but with the capability to provide a TTL interface to a 5V system environment. It 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 device so the buses are effectively isolated. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor and the minimum value of the resistor is determined by the current-sinking capability of the driver. The IOFF circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

• Supports mixed-mode signal operation
• IOFF and power-up 3-state support hot insertion
• Latch-up performance exceeds 100mA per JESD 78, class II
• Supports unregulated battery operation down to 2.7V
• <0.8V at VCC = 3.3V, TA = 25°C VOLP (output ground bounce)
• Green product and no Sb/Br

应用

工业, 自动化与过程控制, 信号处理, 通信与网络