1. General description

The 74ABT245 is an 8-bit transceiver with 3-state outputs. The device features an output enable

(OE) and send/receive (DIR) for direction control. A HIGH on OE causes the outputs to assume a

high-impedance OFF-state. This device is fully specified for partial power down applications using

IOFF. The IOFF circuitry disables the output, preventing the potentially damaging backflow current

through the device when it is powered down.

2. Features and benefits

• Octal bidirectional bus interface

• 3-State buffers

• Supply voltage range from 4.5 to 5.5 V

• BiCMOS high speed and output drive

• Direct interface with TTL levels

• Output capability: +64 mA/–32 mA

• Power-up 3-State

• Live insertion/extraction permitted

• Inputs are disabled during 3-state mode

• IOFF circuitry provides partial Power-down mode operation

• Latch-up protection exceeds 500 mA per JESD78 class II level A

• ESD protection:

• HBM JESD22-A114F exceeds 2000 V

• MM JESD22-A115-A exceeds 200 V

• Specified from -40 °C to +85 °C

74ABT245属于集成电路（IC） > 缓冲器，驱动器，接收器，收发器。安世半导体(中国)有限公司制造生产的74ABT245缓冲器，驱动器，接收器，收发器逻辑缓冲器、驱动器、接收器和收发器允许隔离对某个电路的逻辑信号的访问，以用于另一电路。缓冲器将其输入信号（不变或反相）传递到其输出，并可能用于清除弱信号或驱动负载。在布尔逻辑仿真器中，缓冲器主要用于增加传播延迟。逻辑接收器和收发器允许在数据总线之间进行隔离通信。