SN75970B is an interface between the SCSI controller and the RS-485 transceiver, which supports 16-bit, 20Mxfer and 10Mxfer differential SCSI.
The SN75970B SCSI differential converter‑control converts single‑ended SCSI signals to differential form, meeting EIA‑485 and ISO‑8482 requirements. It is offered in two versions (B2 20 Mxfer and B1 10 Mxfer) and integrates nine RS‑485 differential transceivers, a state machine, and protection circuits.
The device operates from a 5 V supply (0.3 V to 6 V range), supports temperatures from 0 °C to 70 °C, and includes ESD protection up to 12 kV. Electrical characteristics such as output current, voltage levels, and timing are detailed in the datasheet for designers.
| Low disabled supply current | 32 mA typ |
|---|
The device contains nine RS‑485 differential transceivers.