Full RS-485/RS-422 node on one chip with the galvanic isolation and the isolated supply both built in. The signal path (D, R, with DE and RE enables) crosses ADI's iCoupler barrier, and an integrated isoPower DC-DC converter generates the isolated-side supply from the logic-side rail, so no separate isolated power module is needed. It gives 5 kVrms of isolation, runs up to 16 Mbps, and protects the bus against faults. A complete isolated RS-485 interface for industrial networks that must break ground loops.

Pinout

Pin	Name	Type	Function
1	GND1	power_in	Ground, logic side. Reference for the logic-side VCC supply and all logic-side signals (RxD, TxD, DE, RE).
2	VCC	power_in	Logic side power supply, 3.0 V to 5.5 V. A 0.1 µF and a 0.01 µF decoupling capacitor should be fitted between Pin 2 and Pin 1.
3	GND1	power_in	Ground, logic side.
4	RxD	output	Receiver output data. Output is high when (A − B) ≥ −30 mV and low when (A − B) ≤ −200 mV. Tristated when the receiver is disabled (RE driven high).
5	RE	input	Receiver enable input, active low. Driving this input low enables the receiver; driving it high disables the receiver (RxD tristated).
6	DE	input	Driver enable input, active high. Driving this input high enables the differential driver; driving it low disables the driver (Y, Z high impedance).
7	TxD	input	Driver input. Data to be transmitted by the driver is applied to this input.
8	VCC	power_in	Logic side power supply, 3.0 V to 5.5 V. A 0.1 µF and a 10 µF decoupling capacitor should be fitted between Pin 8 and Pin 9.
9	GND1	power_in	Ground, logic side.
10	GND1	power_in	Ground, logic side.
11	GND2	power_in	Ground for isolated dc-to-dc converter, bus side. Connect Pin 11 and Pin 14 together through one ferrite bead to PCB ground.
12	VISOOUT	power_out	Isolated power supply output, typically 3.3 V. Must be connected externally to VISOIN (Pin 19). A 10 µF reservoir capacitor and a 0.1 µF decoupling capacitor should be fitted between Pin 12 and Pin 11.
13	Y	output	Driver noninverting differential output to the RS-485/RS-422 bus.
14	GND2	power_in	Ground for isolated dc-to-dc converter, bus side. Connect Pin 11 and Pin 14 together through one ferrite bead to PCB ground.
15	Z	output	Driver inverting differential output to the RS-485/RS-422 bus.
16	GND2	power_in	Ground, bus side. Do not connect this pin to Pin 14 and Pin 11 (isolated dc-to-dc converter ground).
17	B	input	Receiver inverting differential input from the RS-485/RS-422 bus.
18	A	input	Receiver noninverting differential input from the RS-485/RS-422 bus.
19	VISOIN	power_in	Isolated power supply input to the transceiver. Must be connected externally to VISOOUT (Pin 12) through a ferrite bead and short trace length. A 0.1 µF and a 0.01 µF decoupling capacitor should be fitted between Pin 19 and Pin 20.
20	GND2	power_in	Ground, bus side.

Key specifications

Parameter	Value
Type	Isolated RS-485 / RS-422 transceiver
Isolation	5 kVrms (iCoupler)
Isolated power	Integrated isoPower DC-DC
Data rate	Up to 16 Mbps
Bus protection	Fault-protected
Supply	3.3 V or 5 V (logic side)
Package	SOIC-20W

Ordering variants

ADM2582EBRWZ (SOIC-20W, 16 Mbps)
ADM2587EBRWZ (500 kbps, lower EMI)

CAD (KiCad official)

Symbol: Interface_UART:ADM2582E (KiCad official)
Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
3D model: SOIC-20W (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Analog Devices datasheet (22 pp, sha256 77a52a9e60364895, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

ADM2582E

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README

ADM2582

Pinout

Key specifications

Ordering variants

CAD (KiCad official)

Provenance