SN74ALS642A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

SN74ALS642A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SN74ALS642A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。

Bidirectional Bus Transceivers in

High-Density 20-Pin Packages

Choice of True or Inverting Logic

Package Options Include Plastic

Small-Outline (DW) Packages and

Standard Plastic (N) 300-mil DIPs

description

These octal bus transceivers are designed for

asynchronous two-way communication between

data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending

upon the level at the direction-control (DIR) input. The output-enable (OE) input disables the device so that the

buses are effectively isolated.

The -1 versions of the SN74ALS641A and SN74ALS642A are identical to the standard versions, except that

the recommended maximum IOL is increased to 48 mA in the -1 versions.

The SN74ALS641A, SN74ALS642A, and SN74AS641 are characterized for operation from 0°C to 70°C.