SN65HVD379中文资料3.3V 全双工 RS-485/RS-422 驱动器和平衡接收器数据手册TI规格书

描述 Description

The SN65HVD379 is a differential line driver and differential-input line receiver that operates with a 3.3-V power supply. Each driver and receiver has separate input and output pins for full-duplex bus communication designs. They are designed for balanced transmission lines and interoperation with ANSI TIA/EIA-485A, TIA/EIA-422-B, ITU-T v.11, and ISO 8482:1993 standard-compliant devices.
These differential bus drivers and receivers are monolithic, integrated circuits designed for full-duplex bi-directional data communication on multipoint bus-transmission lines at signaling rates
up to 25 Mbps.The SN65HVD379 is fully enabled with no external enabling pins.
The 1/2 unit load receiver has a higher receiver input resistance.This results in lower bus leakage currents over the common-mode voltage range, and reduces the total amount of current that an RS-485 driver is forced to source or sink when transmitting.
The balanced differential receiver input threshold makes the SN65HVD379 more compatible with fieldbus requirements that define an external failsafe structure.

The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).

特性 Features

• Designed for INTERBUS Applications
• Balanced Receiver Thresholds
• Bus-Pin ESD Protection 15 kV HBM
• Thermal Shutdown Protection
• High Input Impedance With Low VCC
• 5-V Tolerant Inputs
• Utility Meters
• Electronic Security Stations
• Point-of-Sale (POS) Terminals and Networks
• DTE/DCE Interfaces