The SN55173, SN65173, and SN75173 are monolithic quadruple differential line receivers with 3-state outputs. They are designed to meet the requirements of TIA/EIA-422-B, TIA/EIA-423-B, TIA/EIA-485-A, and several ITU recommendations.
Datasheets by Manufacturer
SN75175 — Motorola Semiconductor — QUAD EIA-485 LINE RECEIVER
SN75175D — Motorola Semiconductor — QUAD EIA-485 LINE RECEIVER
SN75175N — Motorola Semiconductor — QUAD EIA-485 LINE RECEIVER