The SN65LBC170 and SN75LBC170 are monolithic integrated circuits designed for bidirectional data communication on multipoint bus-transmission lines. Potential applications include serial or parallel data transmission, cabled peripheral buses with twin axial, ribbon, or twisted-pair cabling. These devices are suitable for FAST-20 SCSI and can transmit or receive data pulses as short as 25 ns, with skew less than 3 ns. These devices combine three 3-state differential line drivers and three differential input line receivers, all of which operate from a single 5-V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form three differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus whenever the
The SN65LBC170 (and SN75LBC170) are monolithic integrated circuits designed for bidirectional data communication on multipoint bus‑transmission lines. They combine three 3‑state differential line drivers and three differential input receivers, operating from a single 5‑V supply and supporting high‑speed standards such as TIA/EIA‑485, TIA/EIA‑422 and HVD SCSI Fast‑20.
The document provides absolute maximum ratings, recommended operating conditions, electrical characteristics for both driver and receiver sections, typical performance curves, and package dimensions for the available SSOP and SOIC options.
| Signaling rate | Up to 30 Mbps |
|---|---|
| Driver output current | ±60 mA |
| Input voltage range (bus I/O terminals) | −10 V – 15 V |
| Operating temperature (SN65LBC170) | −40 °C – 85 °C |
| Operating temperature (SN75LBC170) | 0 °C – 70 °C |
| Package options | Shrink Small‑Outline (JEDEC MO‑150) or Plastic Small‑Outline (JEDEC MS‑013) |
| ESD protection | Exceeds 12 kV |
The device supports signaling rates up to 30 Mbps.
It can source or sink up to ±60 mA per driver.
It is rated for operation from −40 °C to 85 °C.