ADM483EARZ-REEL - 5V ±15kV ESD RS-485 Transceiver | Analog Devices
Teilenummer: ADM483EARZ-REEL ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.62 | $16,20 |
| 100 | $1.38 | $138,00 |
| 500 | $1.18 | $590,00 |
| 1.000 | $0.96 | $960,00 |
| 2.500 | $0.82 | $2.050,00 |
ADM483EARZ-REEL Übersicht
A transceiver in the RS-485/RS-422 category is a differential line driver/receiver IC that converts a single-ended TTL/CMOS logic signal into a balanced differential signal (and vice versa) for transmission over twisted-pair media. RS-485 transceivers sit at the physical layer of multipoint fieldbus architectures and are widely used because they tolerate large common-mode voltages (-7 V to +12 V) and support long cable runs, with the TIA/EIA-485-A standard allowing up to 32 unit loads on a single bus.
Key features include ±15 kV HBM ESD protection per IEC 61000-4-2 air-discharge testing on the bus pins, reduced slew rate to minimize EMI, a single 5 V ±10% supply, open-circuit fail-safe receiver design, thermal shutdown, short-circuit protection on the driver outputs, and a half-duplex (1/1) topology where driver and receiver share the same differential pair. The combination of low quiescent current and integrated ESD protection eliminates external TVS arrays in most designs.
The device uses a BiCMOS process that integrates the differential driver, differential receiver, charge pump for fail-safe biasing, and ESD clamp structures on a single die. The reduced-slew-rate driver edges contain common-mode harmonics above 2 MHz, simplifying FCC Class B and EN 55022 EMI compliance on cables up to several hundred meters.
Typical applications include industrial fieldbus nodes (Modbus, Profibus DP, BACnet), HVAC and building automation networks, motor and motion control links, smart-grid metering, point-of-sale terminals, and any 5 V MCU/UART-to-RS-485 interface requiring robust ESD protection.
Designers should note that the ADM483E shares its bus pinout with industry-standard 8-pin half-duplex RS-485 pinouts such as the MAX485, LTC485, and SP485E, enabling direct footprint compatibility when migrating between families for ESD, speed, or supply current optimization.
Drop-in-Alternativen für ADM483EARZ-REEL – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ADM483EARZ-REEL (gleiche Bauform und Footprint) – abweichend in Data Rate, Operating Temperature, Package, RoHS Status, Supply Voltage.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ADM483EARZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADM483EANZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADM4852AR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADM4850AR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX485ESA+
✅ Drop-In✓ Auf Lager
$0.92 / Stück
Datenblatt ansehen →SP485EEN-L/TR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADM483EARZ-REEL Technische Daten
| Funktion | Transceiver |
| Protocol | RS-422, RS-485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Half |
| Versorgungsspannung | 5 V ±10% |
| Datenrate | 250 kbps |
| ESD Protection (bus pins) | ±15 kV (HBM, per IEC 61000-4-2 air-discharge) |
| Versorgungsstrom | 36 µA (typical, no load) |
| Bus Common-Mode Range | -7 V to +12 V |
| Number of Nodes on Bus | Up to 32 |
| Slew Rate | Limited (reduced for low EMI) |
| Receiver Fail-Safe | Yes (open-circuit, shorted input) |
| Short-Circuit Protection | Yes (driver outputs) |
| Betriebstemperatur | -40°C to +85°C |
| Gehäuse | 8-SOIC (SO-8, 3.9 mm body width) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
| Standards Compliance | TIA/EIA-485-A, TIA/EIA-422 |
ADM483EARZ-REEL Pin-Konfiguration
| Pin 1 | RO — Receiver Output (CMOS/TTL logic, push-pull) |
| Pin 2 | RE — Receiver Enable (active-low; logic-high disables RO to high-Z) |
| Pin 3 | DE — Driver Enable (active-high; logic-low puts driver outputs in high-Z) |
| Pin 4 | DI — Driver Input (TTL/CMOS logic) |
| Pin 5 | GND — Ground (0 V reference for logic and bus common-mode) |
| Pin 6 | A — Non-inverting bus terminal (differential I/O with ±15 kV ESD) |
| Pin 7 | B — Inverting bus terminal (differential I/O with ±15 kV ESD) |
| Pin 8 | VCC — +5 V ±10% supply input |
Typische Anwendungen
ADM483EARZ-REEL ist geeignet für 6 Anwendungs: Industrial Fieldbus Nodes (Modbus, Profibus, BACnet), Building Automation and HVAC Networks, Motor and Motion Control Links, Smart-Grid Metering and Utility Networks, Point-of-Sale (POS) Terminals and Peripherals, 5V MCU UART-to-RS-485 Interface Bridges.
Industrial Fieldbus Nodes (Modbus, Profibus, BACnet)
The ADM483EARZ-REEL is purpose-built for 2-wire half-duplex RS-485 industrial fieldbus nodes running Modbus RTU, Profibus DP, or BACnet MS/TP. The 250 kbps data rate comfortably covers Modbus's 115.2 kbps maximum, and the -7 V to +12 V common-mode range tolerates ground-potential differences between PLC cabinets separated by long cable runs. ±15 kV bus-pin ESD protection eliminates external TVS diodes at every node, simplifying IEC 61131-2 compliant designs.
Empfohlen
Building Automation and HVAC Networks
Building automation networks (BACnet MS/TP, LonWorks, Modbus over RS-485) rely on the ADM483EARZ-REEL's half-duplex 8-pin SOIC form factor to wire thermostats, VAV controllers, and AHU panels into multi-drop trunks. The 32-node bus capacity matches typical BACnet segment limits, while 36 µA quiescent current keeps 24V-powered controller quiescent draw low. Slew-rate-limited edges keep emissions below EN 55022 Class B on unshielded twisted-pair cabling in office and residential buildings.
Empfohlen
Motor and Motion Control Links
The ADM483EARZ-REEL connects servo drives, stepper controllers, and encoder readouts to MCUs over RS-485 in CNC machinery, robotics, and 3D printers. Its half-duplex topology fits the master-slave poll/response pattern used by stepper controller protocols, while ±15 kV ESD handling survives the high-dV/dt transients generated by nearby PWM motor drivers. The 250 kbps bandwidth supports real-time position feedback and parameter updates at typical update rates of 1-10 kHz.
Empfohlen
Smart-Grid Metering and Utility Networks
Smart electricity, water, and gas meters use the ADM483EARZ-REEL to communicate over RS-485 to data concentrators in AMR/AMI deployments. The -40°C to +85°C industrial temperature range handles outdoor meter enclosures, and the -7 V to +12 V common-mode tolerance survives ground-rise events on long distribution-side wiring. ±15 kV ESD protection is critical because utility meters are frequently exposed to nearby lightning-induced surges on overhead service drops.
Empfohlen
Point-of-Sale (POS) Terminals and Peripherals
POS terminals, receipt printers, barcode scanners, and customer displays interconnect via the ADM483EARZ-REEL's half-duplex RS-485 link to cash-register backplanes. The 250 kbps rate is sufficient for transaction bursts and firmware updates, while integrated ±15 kV ESD protects against static discharge from cashiers and shoppers handling card readers. The compact 8-pin SOIC fits inside space-constrained scanner housings alongside USB and Ethernet interfaces.
Empfohlen
5V MCU UART-to-RS-485 Interface Bridges
The ADM483EARZ-REEL bridges a microcontroller's 5V UART to a 2-wire RS-485 bus using the industry-standard MAX485-compatible pinout, requiring only DE, RE, and a single GPIO for direction control. The half-duplex 1/1 configuration shares bus pins between driver and receiver, minimizing cable count to a single twisted pair plus ground. Slew-rate-limited edges relax PCB layout constraints, allowing trace lengths up to several centimeters without transmission-line termination.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ADM483EARZ-REEL – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ADM483EARZ | ADM483EANZ | MAX485ESA+ | SP485EEN-L/TR |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated | MaxLinear |
| Package | 8-SOIC | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same |
| Data Rate (max) | 250 kbps | 250 kbps | 250 kbps | 2.5 Mbps | 10 Mbps |
| ESD Protection (bus pins) | ±15 kV | ±15 kV | ±15 kV | ±15 kV (some variants) | ±15 kV |
| Supply Voltage | 5 V ±10% | 5 V ±10% | 5 V ±10% | 5 V | 5 V |
| Common-Mode Range | -7 V to +12 V | -7 V to +12 V | -7 V to +12 V | -7 V to +12 V | -7 V to +12 V |
| Bus Nodes | 32 | 32 | 32 | 32 | 32 |
Wichtigste Unterscheidungsmerkmale
- Integrated ±15 kV ESD on bus pins without external TVS (vs. MAX485ESA+)
- Slew-rate-limited driver edges for lower EMI (vs. MAX485ESA+)
- 36 µA typical supply current vs 300 µA (vs. MAX485ESA+)
Designhinweise
Place a 100 nF ceramic decoupling capacitor as close as possible to the VCC pin (pin 8) and a 10 µF tantalum or ceramic bulk capacitor on the supply node. Keep A/B bus traces short and symmetric; route them as a 100Ω-impedance differential pair on the PCB to match twisted-pair cable impedance and minimize reflections. Avoid running bus traces near switching regulator or motor driver edges to preserve EMI margin.
Connect DE and RE together and drive both from a single MCU GPIO for direction control - this eliminates the risk of bus contention if the firmware desynchronizes the two enables. Add a 100 kΩ pull-down on DE and a 100 kΩ pull-up on RE so the bus defaults to receive mode (fail-safe) at MCU reset before firmware initializes the GPIO. This prevents the driver from sourcing current into the bus during the boot window.
Do not leave RE floating - if RE is unconnected it can drift to mid-supply and partially enable the receiver, causing bus contention or high quiescent current. Tie RE low (to GND) if you do not need to disable the receiver. Also ensure the bus cable shield is bonded to ground at one end only to prevent ground-loop currents that can exceed the -7 V to +12 V common-mode range over long cable runs.
Compliance-Informationen
RoHS compliant per Analog Devices datasheet. Industrial grade (-40°C to +85°C) but not AEC-Q100 automotive qualified. ESD rating ±15 kV is HBM air-discharge per IEC 61000-4-2.
