3 kV RMS Signal and Power Isolated
RS-485 Transceiver with 15 kV IEC ESD
ADM2561E/ADM2563E/ADM2565E/ADM2567E
Data Sheet
FEATURES
GENERAL DESCRIPTION
3 kV rms isolated RS-485/RS-422 transceiver
The ADM2561E, ADM2563E, ADM2565E, and ADM2567E
Low radiated emissions, integrated, isolated dc-to-dc
converter
Passes EN 55032 Class B with margin on a 2-layer PCB
Cable invert smart feature
Correct reversed cable connection on A, B, Y, and Z bus
pins while maintaining full receiver fail-safe feature
ESD protection on RS-485 A, B, Y and Z pins
≥ 12 kV IEC61000-4-2 contact discharge
≥ 15 kV IEC61000-4-2 air discharge
High speed 25 Mbps data rate (ADM2565E/ADM2567E)
Low speed 500 kbps data rate for EMI control
(ADM2561E/ADM2563E)
are 3 kV rms signal and power isolated RS-485 transceivers.
These devices are designed for balanced transmission lines and
comply with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E).
The devices pass radiated emissions testing to the EN 55032
Class B standard with margin on a 2-layer printed circuit board
(PCB) using two small external 0402 ferrites on isolated power
and ground pins. The device features an integrated, low electro-
magnetic interference (EMI), isolated dc-to-dc converter, which
eliminates the need for an external isolated power supply. The
isolation barrier provides immunity to system level electromag-
netic compatibility (EMC) standards. The family of isolator
devices features 12 kV contact and 15 kV air IEC61000-4-2
ESD protection on the RS-485 A, B, Y, and Z pins. The devices
also features cable invert pins, allowing the user to quickly
correct reversed cable connection on the A, B, Y, and Z bus
pins while maintaining full receiver fail-safe performance.
Flexible power supplies
Input VCC supply of 3 V to 5.5 V
Logic VIO supply of 1.7 V to 5.5 V
VSEL pin to select VISO supply of 5 V (VCC > 4.5 V) or 3.3 V
PROFIBUS compliant for 5 V VISO
Slew rate limited versions are available, which are optimized for
low speed over long cable runs, and have a maximum data rate
of 500 kbps. Half duplex and full duplex variants are available.
The full duplex generics allow independent cable inversion of
the driver and receiver for additional flexibility.
Wide operating temperature range: −40°C to +105°C
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/power-down)
Safety and regulatory approvals (pending)
Table 18 shows the summary description of each generic.
CSA Component Acceptance Notice 5A, DIN V VDE V 0884-
11, UL 1577, CQC11-471543-2012, IEC 61010-1
Complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E)
28-lead, fine pitch SOIC_W package (10.15 mm × 10.05 mm)
with >8.0 mm creepage and clearance
APPLICATIONS
Heating, ventilation, and air conditioning (HVAC) networks
Industrial field buses
Building automation
Utility networks
Energy meters
Rev. B
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