This document introduces the features and characteristics of the ADM488/ADM489 products, including meeting EIA RS-485 and RS-422 standards, 250kbps data rate, single 5V±10% supply, -7V to +12V bus common-mode range, 12kΩ input impedance, 2kV EFT protection, high EM immunity, reduced slew rate, short-circuit protection, excellent noise immunity, and 30μA supply current.
The ADM488 and ADM489 are low‑power, full‑duplex RS‑485/RS‑422 transceivers that operate from a single 5 V supply. They provide a 12 kΩ input impedance, -7 V to +12 V common‑mode range, and include ESD and EFT protection for robust industrial communication. Applications include low‑power RS‑485/RS‑422 systems, DTE‑DCE interfaces, packet switching, LANs, data concentration and multiplexing.
The datasheet lists electrical specifications, timing parameters, absolute maximum ratings, pin configurations for PDIP, SOIC and TSSOP packages, test circuits, switching characteristics, and an ordering guide with temperature ranges for each package option.
| Supply voltage | 5 V ±10 % |
|---|---|
| Maximum data rate | 250 kbps |
| Input impedance | 12 kΩ |
| Common‑mode voltage range | -7 V to +12 V |
| Supply current (unloaded) | 30 µA |
| EFT protection rating | 2 kV (IEC1000‑4‑4) |
| Package options | PDIP, SOIC, TSSOP |
The devices support up to 250 kbps data rate.
They operate from a single 5 V supply with a ±10 % tolerance.
The common‑mode range is –7 V to +12 V.
Both parts are available in PDIP, SOIC, and TSSOP packages.