ADM4850 Datasheet – Duplex RS-485/RS-422 Transceiver

Part Number: ADM4850

Function: Half-Duplex and Full-Duplex RS-485/RS-422 Transceiver

Package: 8-lead SOIC, LFCSP, and MSOP

Manufacturer: Analog Devices

Image and Pinouts:

ADM4850 datasheet



The ADM4850, ADM4851, ADM4852 are differential line transceivers suitable for high speed half- and full-duplex data communication on multipoint bus transmission lines. They are designed for balanced data transmission and comply with EIA Standards RS-485 and RS-422.

The device are half-duplex transceivers that share differential lines and have separate enable inputs for the driver and receiver. The full-duplex ADM4854, ADM4855, ADM4856, ADM4857 transceivers have dedicated differential line driver outputs and receiver inputs. The parts have a 1/8-unit-load receiver input impedance, which allows up to 256 transceivers on one bus. Because only one driver should be enabled at any time, the output of a disabled or powered-down driver is three-stated to avoid overloading the bus.


1. EIA RS-485-/RS-422-compliant

2. Data rate options
(1) ADM4850/ADM4854: 115 kbps
(2) ADM4851/ADM4855: 500 kbps
(3) ADM4852/ADM4856: 2.5 Mbps
(4) ADM4853/ADM4857: 10 Mbps

3. Half- and full-duplex options
4. Reduced slew rates for low EMI
5. True fail-safe receiver inputs
6. 5 μA (maximum) supply current in shutdown mode
7. Up to 256 transceivers on one bus
8. Thermal shutdown and short-circuit protection
9. Specified over the −40°C to +85°C temperature range


1. Low power RS-485 applications
2. EMI-sensitive systems
3. DTE-DCE interfaces
4. Industrial control
5. Packet switching
6. Local area networks
7. Level translators


Other data sheets are available within the file:


ADM4850 Datasheet PDF Download

ADM4850 pdf