SN75LBC179

SN75LBC179, SN65LBC179, SN65LBC179Q SLLS173G – JANUARY 1994 – REVISED OCTOBER 2022 Low-Power Differential Line Driver and Receiver Pairs 1 Features Designed for high-speed multipoint data transmission over long cables Operates with pulse widths as low as 30 ns Low supply current: 5 mA max Meets or exceeds the standard requirementsof ANSI RS-485 and ISO 8482:1987(E) Common-mode voltage range of − 7 V to 12 V Positive-and negative-output current limiting Driver thermal shutdown protection Pin compatible with the SN75179B 2 Description The SN65LBC179, SN65LBC179Q, and SN75LBC179 differential driver and receiver pairs are monolithic integrated circuits designed for bidirectional data communication over long cables that take on the characteristics of transmission lines. The devices are balanced, or differential, voltage mode devices that meet or exceed the requirements of industry standards ANSIRS-485 and ISO 8482:1987(E). Both devices are designed using TI’s proprietary LinBiCMOS™ with the low power consumption of CMOS and the precision and robustness of bipolar transistors in the same circuit. The SN65LBC179, SN65LBC179Q, and SN75LBC179 combine a differential line driver and differential line receiver and operate from a single 5-V supply. The driver differential outputs and the receiver differential inputs are connected to separate terminals for full-duplex operation and are designed to present minimum loading to the bus when powered off (VCC = 0). These parts ...