SN74AC245数据手册集成电路（IC）的缓冲器驱动器接收器收发器规格书PDF

描述 Description

The ’AC245 octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.

When the output-enable (OE)\\ is low, the device passes noninverted 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. A high on OE\\ disables the device so that 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 pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

特性 Features

• 2-V to 6-V VCC Operation
• Inputs Accept Voltages to 6 V
• Max tpd of 7 ns at 5 V