See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

D | 8

Temp:

I (-40 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)

SN65HVD179DR


5 V Full-Duplex RS-485/RS-422 Drivers and Balanced Receivers

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Texas Instruments SN65HVD179DR

The SN65HVD179 is a differential line driver and differential-input line receiver that operates with a 5-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.

The differential bus driver and receiver are monolithic, integrated circuits designed for full-duplex bi-directional data communication on multipoint bus-transmission lines at signaling rates(1) up to 25 Mbps. The SN65HVD179 is fully enabled with no external enabling pins.

The 1/2 unit load receiver has a high receiver input resistance. This results in lower bus leakage currents over the common-mode voltage range, and reduces the total amount of current that a 485 driver is forced to source or sink when transmitting.

The balanced differential receiver input threshold makes the SN65HVD179 fully compatible with fieldbus requirements that define an external failsafe structure.

(1)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).

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