SN65LBC174A
SN75LBC174A
www.ti.com SLLS446F – OCTOBER 2000 – REVISED OCTOBER 2009 QUADRUPLE RS-485 DIFFERENTIAL LINE DRIVERS
Check for Samples: SN65LBC174A SN75LBC174A FEATURES 1 2 (1) Designed for TIA/EIA-485, TIA/EIA-422 and
ISO 8482 Applications
Signaling Rates (1) up to 30 Mbps
Propagation Delay Times < 11 ns
Low Standby Power Consumption 1.5-mA Max 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). Output ESD Protection: 12 kV
Driver Positive-and Negative-Current Limiting
Power-Up and Power-Down Glitch-Free for
Line Insertion Applications
Thermal Shutdown Protection
Industry Standard Pin-Out, Compatible With
SN75174, MC3487, DS96174, LTC487, and
MAX3042 DESCRIPTION
The SN65LBC174A and SN75LBC174A are quadruple differential line drivers with 3-state outputs, designed for
TIA/EIA-485 (RS-485), TIA/EIA-422 (RS-422), and ISO 8482 applications.
These devices are optimized for balanced multipoint bus transmission at signaling rates up to 30 million bits per
second. The transmission media may be printed-circuit board traces, backplanes, or cables. The ultimate rate
and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise
coupling to the environment. …
