SN75138D集成电路（IC）的驱动器接收器收发器规格书PDF中文资料

SN75138D属于集成电路（IC）的驱动器接收器收发器。由德州仪器制造生产的SN75138D驱动器，接收器，收发器该系列产品的主要功能是提供必需的硬件资源，以通过延长电缆或印制线进行通信。确切的功能会因所采用的通信协议而异，可能包括诸如瞬态抑制之类的功能，这些功能对于通信用途可能并非绝对必要，但对于可能的使用环境却是明智之选。

Single 5-V Supply

High-Input-Impedance, High-Threshold

Receivers

Common Driver Strobe

TTL-Compatible Driver and Strobe Inputs

With Clamp Diodes

High-Speed Operation

100-mA Open-Collector Driver Outputs

Four Independent Channels

TTL-Compatible Receiver Output

description

The SN55138 and SN75138 quadruple bus

transceivers are designed for two-way data

communication over single-ended transmission

lines. Each of the four identical channels consists

of a driver with TTL inputs and a receiver with a

TTL output. The driver open-collector output is

designed to handle loads up to 100-mA open

collector. The receiver input is internally

connected to the driver output, and has a high

impedance to minimize loading of the

transmission line. Because of the high driveroutput

current and the high receiver-input

impedance, a very large number (typically

hundreds) of transceivers may be connected to a

single data bus.

The receiver design also features a threshold of 2.3 V (typical), providing a wider noise margin than would be

possible with a receiver having the usual TTL threshold. A strobe turns off all drivers (high impedance) but does

not affect receiver operation. These circuits are designed for operation from a single 5-V supply and include a

provision to minimize loading of the data bus when the power-supply voltage is zero.

The SN55138 is characterized for operation over the full military temperature range of –55°C to 125°C. The

SN75138 is characterized for operation from 0°C to 70°C.