SN74ACT245PWR

These 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(overline)) 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 upon 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(overline) 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.

Applications

• Asynchronous bidirectional communication between data buses

Key features

• Operating supply voltage range: 4.5V to 5.5V VCC
• Inputs tolerant up to 5.5V
• TTL-compatible input voltage levels
• Maximum propagation delay tpd of 8ns at 5V
• Multiple package options available: SN54ACT245 supports J, W, FK packages; SN74ACT245 supports DB, DW, N, NS, PW packages
• Absolute maximum ratings: supply voltage range -0.5V to 7V, input voltage range -0.5V to VCC+0.5V, output voltage range -0.5V to VCC+0.5V, input clamp current ±20mA, output clamp current ±20mA, continuous output current ±50mA, continuous current through VCC or GND ±200mA, storage temperature range -65℃ to 150℃
• Thermal resistance by package: DB package 70℃/W, DW package 58℃/W, N package 69℃/W, NS package 60℃/W, PW package 83℃/W
• All unused inputs must be tied to VCC or GND to ensure proper device operation