SN74HCT245DBR集成电路（IC）的缓冲器驱动器接收器收发器规格书PDF中文资料

SN74HCT245DBR属于集成电路（IC）的缓冲器驱动器接收器收发器。由德州仪器制造生产的SN74HCT245DBR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。

1 Features

• Operating voltage range of 4.5 V to 5.5 V

• High-Current 3-state outputs drive bus lines

directly or up to 15-LSTTL loads

• Low power consumption, 80-μA maximum ICC

• Typical tpd = 14 ns

• ±6-mA output drive at 5 V

• Low input current of 1 μA maximum

• Inputs are TTL-voltage compatible

2 Applications

• Factory Automation and Control

• Grid Infrastructure

• Electronic Point of Sale

• Multi-Function Printers

• Motor Drives

• Storage

• Telecom Infrastructure

3 Description

The SNx4HCT245 octal bus transceivers

are designed for asynchronous two-way

communication between data buses. The controlfunction

implementation minimizes external timing

requirements.

The SNx4HCT245 devices allow data transmission

from the A bus to the B bus or from the B bus to the

A bus, depending upon the logic level at the directioncontrol

(DIR) input. The output-enable ( OE) input can

be used to disable the device so that the buses are

effectively isolated.