Key facts
- Brand
- Analog Devices
- Model
- ADM3493
- Industry
- Industrial
- Documents
- 4
- Languages
- EN
- Last added
- 2012-05-07
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Analog Devices ADM3493 Low Power Half Duplex RS-485/RS-422 Transceiver Datasheet
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.
Analog Devices ADM3493 specifications
| 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 |
Source: Analog Devices ADM3493 Low Power Half Duplex RS-485/RS-422 Transceiver Datasheet
All Analog Devices ADM3493 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum number of transceivers that can be connected on a bus?
The ADM3493 can support up to 256 transceivers on a single bus.
From: Analog Devices ADM3493 Low Power Half Duplex RS-485/RS-422 Transceiver Datasheet
How much current does the device draw in shutdown mode?
In low‑power shutdown mode the device draws only about 2 nA of supply current.
From: Analog Devices ADM3493 Low Power Half Duplex RS-485/RS-422 Transceiver Datasheet
What is the maximum number of transceivers that can be connected on a bus?
Up to 256 transceivers can be connected on the bus.
How much supply current does the ADM3493 draw in shutdown mode?
In shutdown mode the device draws only about 2 nA of supply current.
What supply voltage does the ADM3493 require?
It operates with a 3.3 V supply.
How many transceivers can be connected on a single bus?
Up to 256 transceivers can be connected on the bus.