Active lifecycle — no obsolescence concern
Package and rework — 8-SOIC, straightforward
The 8-SOIC (0.154" body width, 3.90 mm) is a standard surface-mount package. It reflows cleanly with a hot-air station or reflow oven.
ADI ADM4855ARZ RS-485/RS-422 Full-Duplex Transceiver
MPNADM4855ARZ
End of Life
Analog Devices ADM4855ARZ, RS422/RS485 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 500kbps, 4.75V-5.25V, -40°C to 85°C, 8-SOIC, Tube.
$3.29Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting | Surface Mount |
| Supply voltage | 4.75V ~ 5.25V |
| Protocol | RS422, RS485 |
| Operating temperature | -40°C ~ 85°C |
| Duplex | Full |
| Package | Tube |
| Data rate | 500kbps |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Receiver hysteresis | 20 mV |
| Number of drivers (Receivers) | 1/1 |
Product details
Frequently asked questions
What is the difference between ADM4855 and ADM4851?
The ADM4855ARZ is full-duplex (four-wire bus, simultaneous transmit and receive), while the ADM4851ARZ is half-duplex (two-wire bus, shared transmit/receive). Both operate at 500 kbps on a 5 V supply and share the same 8-SOIC footprint.
Can ADM4855ARZ be used in 3.3 V systems?
No. The supply voltage range is 4.75 V to 5.25 V, so it requires a 5 V rail. It is not compatible with 3.3 V logic or supply levels.