ADM3493 is a low power, differential line transceiver designed to operate using a single 3.3 V power supply. It features low power consumption, reduced slew rates, and half duplex transceiver.
The ADM3493 is a low‑power differential line transceiver that operates from a single 3.3 V supply. It features a slew‑rate‑limited driver to reduce EMI and reflections, a shutdown mode that draws only a few nanometers of current, and protection against over‑current and thermal overload. The device supports half‑duplex communication on RS‑485 and RS‑422 buses and can be used in industrial control, LAN, and other EMI‑sensitive applications.
Typical applications include multipoint bus networks, DTE‑DCE interfaces, and packet‑switching environments. The transceiver can connect up to 256 devices on a single bus, operates over a −40 °C to +85 °C temperature range, and provides a data rate of up to 250 kbps.
| Supply Voltage | 3.3 V ±0.3 V |
|---|---|
| Data Rate | 250 kbps |
| Operating Temperature Range | −40 °C to +85 °C |
| Supply Current (typical) | 0.95 mA (DE low) – 1.9 mA (RE low) |
| Shutdown Current | 2 nA |
| Maximum Bus Load | 256 transceivers |
| Input Resistance | 96 kΩ |
The ADM3493 can support up to 256 transceivers on a single bus.
In low‑power shutdown mode the device draws only about 2 nA of supply current.