The SN75ALS170 and SN75ALS170A triple differential bus transceivers are monolithic integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and the driver meets ANSI Standards EIA/TIA-422-B and RS-485 and both the driver and receiver meet ITU Recommendation V.11. The SN75ALS170A is designed for FAST-20 SCSI and can transmit or receive data pulses as short as 30 ns with a maximum skew of 5 ns. The SN75ALS170 and SN75ALS170A provide three bidirectional transceivers, using high-performance low-power Schottky circuitry, designed for multipoint transmission on long bus lines in noisy environments.
The SN75ALS170 and SN75ALS170A are triple differential bus transceivers designed for bidirectional data communication on multipoint bus lines. They operate from a single 5‑V supply, meet ANSI EIA/TIA‑422‑B and RS‑485 standards, and support FAST‑20 SCSI with pulse widths as short as 30 ns.
Key features include up to +60 mA driver output current, 12 kΩ minimum receiver input impedance, thermal shutdown protection, and operation over a temperature range of 0 °C to 70 °C. The datasheet provides detailed electrical characteristics, recommended operating conditions, mechanical dimensions, and absolute‑maximum ratings.
| Supply voltage (Vcc) | 4.75 V – 5.25 V (typical 5 V) |
|---|---|
| Driver output current | +60 mA |
It operates from a single 5‑V supply, with a recommended range of 4.75 V to 5.25 V.
The driver can source up to +60 mA of output current.