MAX14882AWE+ - 5kVRMS Isolated CAN Transceiver, 16-SOIC | Analog Devices
Référence : MAX14882AWE+ ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.96 | $8,96 |
| 10 | $8.42 | $84,20 |
| 100 | $7.65 | $765,00 |
| 500 | $6.92 | $3 460,00 |
| 1 000 | $6.18 | $6 180,00 |
MAX14882AWE+ Présentation
An isolated CAN transceiver is a physical-layer interface device that integrates galvanic isolation directly between the digital logic side and the bus side of a CAN (Controller Area Network) controller, replacing discrete optocouplers or digital isolators plus a separate CAN transceiver. The category hierarchy is: CAN transceiver -> CAN interface IC -> interface IC -> power management/isolation IC -> semiconductor. The MAX14882 reduces BOM count, simplifies PCB layout, and ensures deterministic propagation delay across the isolation barrier compared with discrete isolation + transceiver solutions.
Key differentiating features include a wide 3.0V to 5.5V supply on the controller-side (VDDA) and 4.5V to 5.5V on the bus-side (VDDB), an integrated transformer driver and LDO that can power the bus-side supply from a single external transformer, and an auxiliary LDO capable of 130mA internal plus external load current up to 300mA total. Additional protection features include hot-plug detection, common-mode stabilization via POL pin, and the ability to recover from cross-wired bus cables through polarity inversion via the POL pin.
The MAX14882 uses Analog Devices' proprietary capacitive isolation technology to achieve up to 5000VRMS isolation for 60 seconds while supporting data rates up to 1Mbps per ISO 11898. The integrated transformer driver eliminates the need for a dedicated isolated DC-DC converter, saving both PCB area and cost in space-constrained industrial designs.
Typical applications include industrial CAN bus networks, factory automation systems, building automation (BACnet), photovoltaic inverter communications, electric vehicle charging stations, and any application where high-voltage ground potential differences exist between CAN nodes.
When designing with this device, ensure the external transformer meets the 5kVRMS isolation rating and that creepage/clearance distances comply with end-application safety standards (IEC 61800, IEC 60664). Decoupling capacitors must be placed close to both VDDA and VDDB pins to minimize switching noise on the bus-side supply.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet. All comparison data was sourced from real-time distributor listings on 2026-10-09.
Alternatives de remplacement direct pour MAX14882AWE+ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MAX14882AWE+ (même facteur de forme et même empreinte) — différant par Package, Function, Protocol, Operating Temperature, Operating Temperature Range.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MAX14882AWE+T
✅ Remplacement direct✓ En stock
$6.21 / unité
Voir la fiche technique →MAX14852GWE+
✅ Remplacement direct✓ En stock
$7.25 / unité
Voir la fiche technique →MAX14850ASE+
✅ Remplacement direct✓ En stock
$2.41 / unité
Voir la fiche technique →MAX14882AWE+ Spécifications
| Fonction | Isolated High-Speed CAN Transceiver |
| Protocol | ISO 11898-2 CAN |
| Number of Drivers/Receivers | 1/1 |
| Débit de données | up to 1 Mbps |
| Galvanic Isolation Voltage | 5000 VRMS (60s) |
| VDDA Supply Voltage (Controller-side) | 3.0 V to 5.5 V |
| VDDB Supply Voltage (Bus-side) | 4.5 V to 5.5 V |
| Receiver Common-Mode Range | -25 V to +25 V |
| CANH/CANL Fault Tolerance | ±54 V |
| ESD Protection (Bus-side, HBM) | ±15 kV |
| Integrated Transformer Driver | Yes |
| Auxiliary LDO Output Current | 130 mA internal / 300 mA max |
| Plage de température de fonctionnement | -40 °C to +125 °C |
| Boîtier | 16-pin Wide SOIC (W SOIC) |
| Creepage and Clearance | 8 mm |
| Statut RoHS | Compliant |
Configuration des broches de MAX14882AWE+
| Broche 1 | VDDA — Controller-side supply voltage input (3.0V to 5.5V) |
| Broche 2 | GNDA — Controller-side ground |
| Broche 3 | TXD — Transmit data input from CAN controller |
| Broche 4 | RXD — Receive data output to CAN controller |
| Broche 5 | SHDN — Shutdown control input (active-low) |
| Broche 6 | REF — Reference voltage output (decouple with capacitor) |
| Broche 7 | POL — Polarity swap control (swaps CANH and CANL roles) |
| Broche 8 | TXD_OUT — Bus-side TXD loopback output (test/debug) |
| Broche 9 | VDDB — Bus-side supply voltage (4.5V to 5.5V) |
| Broche 10 | GNDB — Bus-side ground |
| Broche 11 | CANL — CAN low bus line |
| Broche 12 | CANH — CAN high bus line |
| Broche 13 | RS — Slope control resistor for bus slew rate |
| Broche 14 | TXP — Transformer driver primary output |
| Broche 15 | TXN — Transformer driver primary return |
| Broche 16 | LDO_OUT — Auxiliary LDO output (300mA max) |
Applications typiques
MAX14882AWE+ convient pour 6 applications: Industrial CAN Bus Networks, Photovoltaic Inverter Communications, Electric Vehicle Charging Stations, Factory Automation and Motor Drives, Building Automation (BACnet over CAN), Medical Equipment Isolation.
Industrial CAN Bus Networks
The MAX14882AWE+ is purpose-built for industrial CAN bus networks where high-voltage ground potential differences exist between nodes, such as PLC-to-drive links across a factory floor. Its 5kVRMS isolation eliminates ground loops that would otherwise damage CAN controllers, while ±54V bus fault tolerance survives DC offsets and cross-wiring faults during installation. Compared with discrete isolator-plus-transceiver solutions, the integrated design saves roughly 30-50% PCB area and reduces BOM by 4-6 components. The integrated transformer driver also simplifies the isolated supply rail design.
Recommandé
Photovoltaic Inverter Communications
Solar inverters generate large DC bus voltages (up to 1500V) that must be isolated from low-voltage CAN monitoring networks. The MAX14882AWE+ provides 5kVRMS reinforced isolation suitable for these high-voltage DC environments, with 8mm of creepage and clearance in the W SOIC-16 package meeting IEC 62109 safety standards. The integrated auxiliary LDO (300mA max) can power additional monitoring circuitry on the bus-side. The -40°C to +125°C operating range ensures reliability in outdoor combiner boxes exposed to direct sunlight and cold nights.
Recommandé
Electric Vehicle Charging Stations
EV charging stations (SAE J1772 / IEC 61851) use CAN bus for control pilot communication between the charger and vehicle BMS, often across several kilovolts of isolation. The MAX14882AWE+ provides the 5kVRMS reinforced isolation required for these Class II safety systems, with CANH/CANL fault tolerance up to ±54V protecting against ESD and cable miswiring events. The integrated transformer driver removes the need for a separate isolated DC-DC, saving cost in cost-sensitive AC Level 2 charger designs. Hot-plug detection ensures clean bus arbitration when vehicles connect and disconnect.
Recommandé
Factory Automation and Motor Drives
Industrial servo drives and variable-frequency drives communicate with PLCs over CANopen or proprietary CAN protocols, often across isolation barriers rated for 600V or 1200V working voltage. The MAX14882AWE+ with its 5kVRMS isolation and 8mm clearance supports these drives per IEC 61800-5-1. The auxiliary LDO output (300mA) can power a local CAN microcontroller or sensor bridge on the bus-side. The integrated transformer driver eliminates the costly isolated DC-DC subsystem typical of motor-drive designs, and ±15kV ESD protects against the high-noise environment near IGBT switching.
Recommandé
Building Automation (BACnet over CAN)
BACnet building automation systems using CAN as a physical layer require isolation between HVAC controllers, lighting panels, and access-control devices often spread across large commercial buildings with long cable runs. The MAX14882AWE+ supports 1 Mbps CAN data rates suitable for BACnet MS-TP-style fast polling, while its 5kVRMS isolation protects controllers from ground potential differences created by long cable runs and lightning-induced surges. The W SOIC-16 narrow-body footprint enables integration into compact DIN-rail controller modules.
Recommandé
Medical Equipment Isolation
Medical imaging equipment, patient monitors, and lab analyzers often use CAN bus for internal module-to-module communication while requiring strict isolation per IEC 60601-1 for patient leakage current. The MAX14882AWE+ 5kVRMS reinforced isolation is well-suited to these medical isolation requirements, and the integrated transformer driver eliminates discrete isolated power components that would each need their own safety certification. The -40°C to +125°C range supports sterilizable and body-worn medical devices.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MAX14882AWE+ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MAX14882AWE+T | MAX14852GWE+ | MAX14850ASE+ |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-pin Wide SOIC (W SOIC) | 16-pin Wide SOIC (W SOIC) - same | 16-pin Wide SOIC (W SOIC) - same | 16-pin W SOIC-equivalent - same |
| Function | Isolated CAN Transceiver | Isolated CAN Transceiver | Isolated RS-485/RS-422 Transceiver | Isolated RS-485/RS-422 Transceiver |
| Galvanic Isolation | 5000 VRMS (60s) | 5000 VRMS (60s) | 1500 VRMS (60s) | 1500 VRMS (60s) |
| Data Rate | 1 Mbps | 1 Mbps | 25 Mbps | 25 Mbps |
| Integrated Transformer Driver | Yes | Yes | No | No |
| ESD Protection (Bus-side HBM) | ±15 kV | ±15 kV | ±15 kV | ±15 kV |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
| Packaging Format | Tube | Tape & Reel | Tube | Tube |
Principaux différenciateurs
- Highest isolation voltage in the W SOIC-16 isolated-CAN family (vs MAX14852GWE+)
- Integrated transformer driver eliminates isolated DC-DC subsystem (vs MAX14882AWE+T (same-die T&R variant))
- Polarity swap (POL pin) for cross-wired bus recovery (vs MAX14850ASE+)
Notes de conception
Maintain at least 8mm of creepage and clearance under the W SOIC-16 package body to preserve the 5kVRMS reinforced isolation rating. Place the external transformer (typically 1:1 turns ratio, 5kVRMS-rated) within 5mm of the TXP/TXN pins to minimize loop area. Use a 4-layer PCB with a continuous ground plane on the layer immediately beneath the device; do not route any signal or power traces across the isolation barrier gap.
Decouple VDDA with a 1µF ceramic capacitor placed within 2mm of the pin, and VDDB with a 10µF ceramic plus a 100nF high-frequency bypass capacitor. The integrated transformer driver requires the external transformer primary inductance to be in the range specified by the datasheet (typically 350µH); using a lower-inductance transformer reduces VDDB voltage and may cause bus-side logic errors at the maximum 1 Mbps data rate.
At 1 Mbps continuous transmission into a worst-case 60Ω CAN bus load, the MAX14882AWE+ dissipates approximately 100-150mW internally. The 16-pin W SOIC package thermal resistance (θJA ≈ 100°C/W on a 2-layer JEDEC test board) results in a junction temperature rise of only 10-15°C above ambient - well within the 125°C limit. No heatsinking is required for normal operation.
Connect the RS (slope control) pin to ground via a resistor to control the bus slew rate; a 0Ω resistor yields maximum speed (1 Mbps), while 100kΩ reduces EMI for low-speed applications. Place a split termination (typically 60Ω total resistance split between CANH and CANL with a center tap to GNDB through a 10nF capacitor) to suppress common-mode noise and improve EMC performance per ISO 11898-2 recommendations.
Informations de conformité
RoHS compliant per Analog Devices product page. The AWE+ suffix confirms lead-free terminal finish (Matte Tin per JESD-609 e3). AEC-Q100 not applicable - this is an industrial-grade isolation product, not automotive qualified. Halogen-free status not explicitly published in the available web data.
