MAX1480ACPI+ - Isolated 250kbps RS-485/422 | Maxim
N.º de pieza: MAX1480ACPI+ ✓ ActivoMAX1480ACPI+ Descripción general
An RS-485/RS-422 interface transceiver is an interface IC that converts logic-level signals into differential bus signals and receives those differential signals back into logic levels. The MAX1480ACPI+ belongs to the broader isolated interface IC and data-transceiver hierarchy, where electrical isolation separates the logic side from the communications bus. That isolation is useful when the transceiver must withstand ground-potential differences, reduce common-mode coupling, or protect sensitive equipment connected to a noisy industrial bus.
Key features include complete electrically isolated RS-485/RS-422 interfacing, half-duplex operation, a 5 V operating supply, and a 250 kb/s data rate. The MAX1480A family is available in a 28-pin DIP package, making it appropriate for industrial-control, test-equipment, building-control, and isolated network-interface designs where through-hole construction and galvanic separation are important.
The device integrates the driver, receiver, isolation barrier, and associated interface functions into a hybrid microcircuit. A single 5 V supply on the logic side powers both sides of the interface according to the manufacturer description. This integrated approach reduces the number of external isolation components and simplifies the physical implementation of an isolated serial-data port.
Typical uses include automated test equipment, HVAC and building-control networks, industrial-control links, local-area networks, and EMI-sensitive isolated RS-485 or RS-422 interfaces. The 28-pin DIP format is useful where a leaded package is preferred for manual assembly, repair, or compatibility with an existing through-hole board.
Designers should verify the complete pinout, isolation ratings, bus loading, termination, and transient protection against the manufacturer datasheet before laying out a new PCB. Because this is a through-hole DIP device, connector creepage, isolation-barrier placement, and cable-side surge protection require particular attention.
This page combines verified distributor information, manufacturer-family details, same-package alternatives, comparison parameters, and practical design guidance to support component selection beyond a basic distributor listing.
Alternativas directas para MAX1480ACPI+ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MAX1480ACPI+ (mismo factor de forma y huella) — difiere en Package, Product Type, Isolation, Construction, Data Rate.
MAX1480BCPI+
✅ Sustitución directaConsulte el precio
Ver hoja de datos →MAX1480BEPI+
✅ Sustitución directaConsulte el precio
Ver hoja de datos →MAX1480CCPI+
✅ Sustitución directaConsulte el precio
Ver hoja de datos →MAX1480AEPI+
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →MAX1480CCPI
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX1480ACPI+ Especificaciones
| Product Type | Complete electrically isolated RS-485/RS-422 data transceiver |
| Transceiver Configuration | 1/1 half-duplex transceiver |
| Supported Standards | RS-485 and RS-422 |
| Isolation | Electrically isolated |
| Logic-Side Supply Voltage | 5 V |
| Maximum Data Rate | 250 kb/s |
| Encapsulado | 28-pin DIP |
| Tipo de montaje | Through-hole |
| Device Family | MAX1480A/B/C |
| Construction | Hybrid microcircuit |
Guía de configuración de pines de MAX1480ACPI+ 28-pin dip
Configuración de pines para MAX1480ACPI+ (encapsulado 28-pin dip). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para MAX1480ACPI+.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MAX1480ACPI+ es adecuado para 6 aplicacións: Industrial-Control Communication, Automated Test Equipment, HVAC and Building-Control Networks, EMI-Sensitive Data Interface, Isolated Local-Area Network, Isolated Field-Service Interface.
Industrial-Control Communication
The MAX1480ACPI+ fits isolated industrial-control links that require RS-485 or RS-422 signaling at rates up to 250 kb/s. Its electrically isolated interface separates the logic side from the bus side, helping manage ground-potential differences and common-mode coupling in systems with long cables or noisy equipment. The 5 V supply and 28-pin through-hole package also suit legacy control boards that favor DIP construction. Before deployment, verify the manufacturer's isolation rating and temperature grade against the installation environment, and confirm that the 250 kb/s rate remains adequate for the selected bus protocol.
Recomendado
Automated Test Equipment
The MAX1480ACPI+ can connect automated test equipment to an isolated RS-485 or RS-422 instrumentation bus. A 250 kb/s half-duplex data rate is appropriate for command transfer, status reporting, and configuration traffic where deterministic low-to-moderate-speed serial communication is more important than maximum throughput. Electrical isolation helps protect test-system electronics from ground shifts and common-mode transients encountered across long cable runs. Engineers should verify driver loading, receiver common-mode limits, and isolation withstand ratings from the MAX1480A datasheet before connecting external test fixtures.
Recomendado
HVAC and Building-Control Networks
The MAX1480ACPI+ is suitable for isolated building-control communication between HVAC controllers, sensors, and supervisory equipment using RS-485 or RS-422. The 250 kb/s maximum data rate provides ample bandwidth for polling and configuration traffic, while the isolation barrier helps isolate equipment distributed across different building ground potentials. The 28-pin DIP format supports leaded board construction and repairability. Final design approval should consider environmental temperature, cable length, bus topology, termination, surge exposure, and whether the manufacturer-supported isolation rating is appropriate for the building installation.
Recomendado
EMI-Sensitive Data Interface
The MAX1480ACPI+ can be used where an RS-485 or RS-422 port must operate close to noisy motors, relays, switching equipment, or long external cables. Electrical isolation reduces the energy that can propagate between the communications bus and the host logic, while the 250 kb/s rate supports moderate-speed control and monitoring traffic. Designers should still treat isolation as one part of a complete EMC design, maintaining proper grounding, routing the differential pair as a balanced pair, and applying appropriate cable-side transient protection. The manufacturer's recommended layout and isolation details should be followed exactly.
Recomendado
Isolated Local-Area Network
The MAX1480ACPI+ supports isolated local-area network nodes built around RS-485 or RS-422 physical layers. Its 250 kb/s data rate is suitable for supervisory control, status polling, and configuration rather than high-bandwidth payload transfer. The integrated isolation and transceiver functions can simplify a node design by reducing the number of separate isolation and interface assemblies. When selecting the topology, engineers must account for transceiver loading, termination, fail-safe biasing, cable length, and node count. For network equipment, the verified manufacturer data should also be checked for operating temperature and reinforced or basic isolation requirements.
Recomendado
Isolated Field-Service Interface
The MAX1480ACPI+ is applicable to field-service equipment that communicates with remote sensors or actuators over an isolated RS-485 or RS-422 link. The half-duplex 250 kb/s interface provides enough bandwidth for configuration, telemetry, and diagnostic traffic while limiting bus bandwidth. Its 28-pin DIP package can be advantageous in rugged, repairable equipment where through-hole mechanical reliability is preferred. The isolation function must be validated against the required withstand voltage, pollution degree, and environmental conditions, and the bus should include suitable protection against surge and ESD events encountered in field installations.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MAX1480ACPI+ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MAX1480BCPI+ | MAX1480BEPI+ | MAX1480CCPI+ | MAX1480AEPI+ | MAX1480CCPI |
|---|---|---|---|---|---|---|
| Package | 28-pin DIP | 28-pin DIP | 28-pin DIP | 28-pin DIP | 28-pin DIP | 28-pin DIP |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Interface Type | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 |
| Isolation | Electrically isolated | Electrically isolated | Electrically isolated | Electrically isolated | Electrically isolated | Electrically isolated |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Implementation | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit |
Diferenciadores clave
- Identified 250 kb/s operating class (frente a MAX1480CCPI+)
- Verified one-half transceiver configuration (frente a MAX1480BEPI+)
- Complete isolated RS-485/RS-422 integration (frente a SN65HVD06D)
Notas de diseño
Place the MAX1480ACPI+ in accordance with the manufacturer pinout and isolation-layout guidance. Keep logic-side and bus-side return paths distinct where required by the isolation architecture, and route the RS-485 or RS-422 differential pair as a tightly coupled pair. The supplied data confirms a 28-pin DIP but does not provide individual pin names, so the mechanical and electrical layout must be completed from the official MAX1480A datasheet rather than an inferred diagram.
The electrically isolated interface helps separate the logic and bus domains, but it does not replace a complete EMC strategy. Use a balanced cable, maintain recommended differential routing geometry, minimize stubs, and install bus-side transient protection for externally accessible cables. Verify common-mode range, isolation withstand, and ESD performance against the manufacturer data before release because those numerical limits were not included in the supplied search results.
Do not assume that every MAX1480 suffix is an unconditional drop-in replacement. The A, B, C, and E order codes can identify different performance or environmental grades, so compare the exact data rate, temperature range, isolation rating, timing, and supply requirements. Also verify the transceiver direction and half-duplex behavior before substitution; identical 28-pin DIP packaging does not by itself guarantee identical operating behavior.
The verified description states that a single 5 V supply on the logic side powers both sides of the interface. Follow the manufacturer's recommended bypass capacitance, supply sequencing, grounding, and isolation-return requirements without substituting unverified values. Confirm the exact pin assignments from the official datasheet and include adequate local decoupling at the device to limit supply noise coupled into the isolated bus interface.
Información de cumplimiento
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to this industrial interface product because no automotive qualification was identified.
