SN75ALS170DWR集成电路（IC）的驱动器接收器收发器规格书PDF中文资料

SN75ALS170DWR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SN75ALS170DWR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。

Three Bidirectional Transceivers

Driver Meets or Exceeds ANSI Standard

EIA/TIA-422-B and RS-485 and ITU

Recommendation V.11

Two Skew Limits Available

Designed to Operate Up to 20 Million Data

Transfers per Second (FAST-20 SCSI)

High-Speed Advanced Low-Power Schottky

Circuitry

Designed for Multipoint Transmission on

Long Bus Lines in Noisy Environments

Wide Positive and Negative Input/Output

Bus Voltage Ranges

Driver Output Capacity . . . ±60 mA

Thermal Shutdown Protection

Driver Positive- and Negative-Current

Limiting

Receiver Input Impedances . . . 12 kW Min

Receiver Input Sensitivity . . . ±300 mV Max

Receiver Input Hysteresis . . . 60 mV Typ

Operate From a Single 5-V Supply

Glitch-Free Power-Up and Power-Down

Protection

Feature Independent Direction Controls for

Each Channel

description

The SN75ALS170 and SN75ALS170A triple differential bus transceivers are monolithic integrated circuits

designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced

transmission lines and the driver meets ANSI Standards EIA/TIA-422-B and RS-485 and both the driver and

receiver meet ITU Recommendation V.11. The SN75ALS170A is designed for FAST-20 SCSI and can transmit

or receive data pulses as short as 30 ns with a maximum skew of 5 ns.

The SN75ALS170 and SN75ALS170A operate from a single 5-V power supply. The drivers and receivers have

active-high and active-low enables, respectively, which are internally connected together to function as a

direction control. The driver differential outputs and the receiver differential inputs are connected internally to

form differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus when the

driver is disabled or VCC = 0. These ports feature wide positive and negative common-mode voltage ranges

making the device suitable for party-line applications.

The SN75ALS170 and the SN75ALS170A are characterized for operation from 0°C to 70°C.