GENERAL DESCRIPTION

The ADM2461E/ADM2463E are 500 kbps, 5.7 kV rms, signal

isolated RS-485 transceivers that pass radiated emissions testing to

the EN55032 Class B standard with margin on a 2-layer printed

circuit board (PCB). The ADM2461E/ADM2463E isolation barrier provides robust immunity to noise and system level EMC

events. The devices are protected against ≥±12 kV contact and ≥ ±15 kV air IEC61000-4-2 electrostatic discharge (ESD) events

on the RS-485 A, B, Y, and Z pins. The devices feature cable invert

pins to allow quick correction of the reversed cable connection

on the A, B, Y, and Z bus pins while maintaining full receiver

fail-safe performance.

These devices are optimized for low speed over long cable runs and have a maximum data rate of 500 kbps. The high differential

output voltage makes these devices suitable for Profibus nodes

when powered with 5 V on the VDD2 supply. The VDD1 primary

supply and VDD2 isolated supply both support a wide range of

voltages (1.7 V to 5.5 V and 3 V to 5.5 V, respectively). Half-

duplex and full duplex device options are available in the industry standard 16-lead, wide-body, standard SOIC_W package with >8.0 mm creepage and clearance.

FEATURES

5.7 kV rms, signal isolated RS-485/RS-422 transceiver

Low radiated emissions, passes EN55032 Class B with margin on a 2-layer PCB

Cable inversion smart feature Correction for reversed cable connection on A, B, Y, and Z bus

pins while maintaining full receiver fail-safe ESD protection on the RS-485 A, B, Y, and Z bus pins

≥±12 kV IEC61000-4-2 contact discharge ≥±15 kV IEC61000-4-2 air discharge

Low speed 500 kbps data rate for EMI control Flexible power supply inputs

Primary VDD1 supply of 1.7 V to 5.5 V Isolated VDD2 supply of 3.0 V to 5.5 V Profibus® compliant for 5 V VDD2

Wide −40°C to +125°C operating temperature range High common-mode transient immunity: >250 kV/μs Short-circuit, open-circuit, and floating input receiver fail-safe Supports 192 bus nodes (72 kΩ receiver input impedance) Full hot swap support (glitch free power-up and power-down) Safety and regulatory approvals (pending)

CSA Component Acceptance Notice 5A, DIN V VDE V 0884-11,

UL 1577, CQC11-471543-2012, IEC 61010-1 16-lead, wide body, SOIC_W package with >8.0 mm

creepage and clearance in standard pinout

APPLICATIONS

Heating, ventilation, and air conditioning (HVAC) networks

Industrial field buses Building automation

Utility networks