The ADM485E/ADM487E/ADM1487E are 5V low power data transceivers with ±15 kV ESD protection suitable for half-duplex communication on multipoint bus transmission lines. They are designed for communication based on the TIA/EIA RS-485/RS-422 standard and have data transfer rates of 250 kbps (ADM487E) and 2.5 Mbps (ADM485E/ADM1487E). Additionally, they feature reduced slew rates for low electromagnetic interference, a common-mode input range of -7V to +12V, thermal shutdown, and short-circuit protection.
The ADM487E is a 5 V, half‑duplex RS‑485/RS‑422 transceiver offering +15 kV ESD protection and low‑power operation. It supports up to 128 transceivers on a bus and includes thermal shutdown and short‑circuit protection. The device is supplied in an 8‑lead SOIC package.
The document provides detailed specifications, timing parameters, absolute maximum ratings, pin configuration, typical performance curves, and ordering information for the ADM485E, ADM487E, and ADM1487E families.
| Data Rate (ADM487E) | 250 kbps |
|---|---|
| Supply Voltage | 5 V ±10 % |
| Input High Voltage (Vi) | 2.0 V |
| Output Low Voltage (Vor) | 0.4 V |
| ESD Protection | 415 kV (Human Body Model) |
The ADM487E supports a data rate of up to 250 kbps.
The device provides 415 kV ESD protection according to the human body model.
The transceiver operates from 5 V with a ±10 % tolerance.