MAX3485CSA+ - 10Mbps 3.3V RS-485/RS-422 IC | Maxim
N.º da peça: MAX3485CSA+ ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.9903 | $5,99 |
| 10 | $5.4903 | $54,90 |
| 100 | $4.9903 | $499,03 |
| 500 | $4.4903 | $2.245,15 |
| 1.000 | $3.9903 | $3.990,30 |
| 3.000 | $3.4903 | $10.470,90 |
MAX3485CSA+ Visão geral
An RS-485/RS-422 transceiver is a physical-layer interface IC that converts logic-level signals into differential bus signals and receives differential bus signals back into logic levels. RS-422 supports balanced, point-to-point communication, while RS-485 adds the ability for multiple drivers and receivers on a shared bus when the system is properly terminated and controlled. The MAX3485CSA+ belongs to the interface-IC hierarchy: transceiver, differential data interface, communications IC, and semiconductor.
The MAX3485CSA+ is identified as a 3.3V-powered 10Mbps RS-485/RS-422 transceiver with an 8-SOIC package. The family description also states that the MAX3483 and MAX3488 use slew-rate-limited drivers to minimize unwanted effects, while the broader MAX348x/MAX349x family includes multiple transceivers for different operating requirements. Exact MAX3485CSA+ limits not present in the supplied search data are retained as data-needed rather than estimated.
A typical use places the transceiver between a host UART or embedded controller and a cable-based RS-485 or RS-422 link. The differential bus improves noise immunity over single-ended signaling, while the 10Mbps capability supports factory automation, industrial controls, instrumentation links, building automation, and embedded data networks. Bus topology, cable length, grounding, termination, and protocol timing must be validated together because transceiver speed alone does not guarantee reliable network operation.
The principal design considerations are correct logic-side voltage compatibility, supply decoupling, controlled enable and driver shutdown behavior, proper bus termination, and protection against electrostatic discharge or inductive transients. The verified distributor information lists the part in an 8-SOIC package and describes the device as a 1/1 RS-422/RS-485 transceiver, but it does not provide a complete manufacturer pinout, electrical limit table, or lifecycle classification. Engineers should consult the official MAX3485 datasheet before layout or production release.
This page consolidates the supplied manufacturer, distributor, and cross-reference information with practical selection guidance. It distinguishes confirmed facts from unavailable parameters and avoids treating package variants or merely similar interface ICs as drop-in replacements without verified pin and electrical compatibility.
Alternativas drop-in para MAX3485CSA+ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
XR3078XID-F
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3485CSA+T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3485ESA-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3485ECSA+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3486CSA
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3465CSD+T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3485CSA+ Especificações
| Product Type | RS-485/RS-422 transceiver |
| Tensão de alimentação | 3.3 V |
| Taxa de dados | 10 Mbps |
| Duplex Mode | Half-duplex |
| Driver Count | 1 driver |
| Receiver Count | 1 receiver |
| Supported Standards | RS-485 and RS-422 |
| Driver Feature | Slew-rate-limited driver family feature |
| Short-Circuit Protection | Short-circuit current limited driver |
| Desligamento térmico | Driver enters high-impedance state during thermal shutdown |
| Receiver Feature | Fail-safe receiver input |
| Encapsulamento | 8-SOIC, 0.154 inch, 3.90 mm width |
| Tipo de montagem | Surface mount |
| Faixa de temperatura de operação | 0C to +70C |
| Channel Direction | 1 transmitter and 1 receiver |
Guia de Configuração de Pinos do MAX3485CSA+ 8-soic, 0.154 inch, 3.90 mm width
Configuração de pinos para MAX3485CSA+ (pacote 8-soic, 0.154 inch, 3.90 mm width). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para MAX3485CSA+.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MAX3485CSA+ é adequado para 6 aplicaçãos: Industrial Automation RS-485 Bus, Building Automation and HVAC Control, Instrumentation and Test Equipment, Embedded Controller Communication, Data Acquisition and Remote Sensors, Industrial Communication Gateways.
Industrial Automation RS-485 Bus
MAX3485CSA+ fits industrial automation links that require a 3.3V differential transceiver with one driver, one receiver, and operation up to 10Mbps. The device can connect a controller UART to sensors, actuators, remote I/O modules, or programmable logic controllers over an RS-485 bus. Its differential signaling helps reject common-mode noise in factory environments, while the half-duplex arrangement supports shared-bus communication when only one node transmits at a time. Bus length, baud rate, termination, grounding, and node loading must be validated together; the 10Mbps capability is not a guarantee that every topology can operate at that rate. The verified material confirms the protocol family, 3.3V supply, 10Mbps rating, and 8-SOIC package, but complete electrical limits should come from the official datasheet.
Recomendado
Building Automation and HVAC Control
MAX3485CSA+ is appropriate for building-control networks where a low-voltage controller must communicate with distributed HVAC equipment, room controllers, gateways, or sensor nodes. The 3.3V supply and one-driver/one-receiver arrangement support embedded serial interfaces, while RS-485 provides a robust differential physical layer for cables running between equipment locations. In a building installation, keep the transceiver close to the cable connector, provide local decoupling, route the differential pair as a controlled pair, and install termination only where required by the selected topology. The confirmed 10Mbps figure provides a generous communications capability, but practical range depends on cable type, baud rate, node count, noise, and grounding. Confirm exact pinout and absolute maximum ratings from the official MAX3485 documentation.
Recomendado
Instrumentation and Test Equipment
MAX3485CSA+ can serve as the physical-layer interface in instrumentation and test systems that exchange commands and measurements between a host controller and remote fixtures. Differential RS-485 or RS-422 signaling helps maintain data integrity when control and measurement equipment is connected through longer cables or shares a chassis with switching power converters. The verified 3.3V operation and 10Mbps capability allow the transceiver to support both moderate-speed control traffic and faster data transfer, subject to the system timing and cable environment. Designers should separate sensitive analog and reference paths from the bus return current, use a defined ground strategy, and verify receiver thresholds and common-mode limits from the manufacturer datasheet. The supplied sources do not provide those complete limits, so they remain data-needed.
Recomendado
Embedded Controller Communication
MAX3485CSA+ is useful when an embedded microcontroller, application processor, or UART peripheral needs to communicate with a remote board through an RS-485 or RS-422 link. The half-duplex one-transmitter/one-receiver structure lets the same pair support command transmission and response reception when the firmware controls driver enable timing. Because the device is rated for 3.3V operation, interface-level voltage compatibility with the controller must still be checked; supply voltage alone does not prove logic-level compatibility. Keep the transceiver interface traces short and place protection, termination, and optional bias networks near the connector when appropriate. The verified search data confirms the 8-SOIC package and up-to-10Mbps family rating, but does not provide the complete logic thresholds or enable timing needed for a final schematic.
Recomendado
Data Acquisition and Remote Sensors
MAX3485CSA+ can interface a data-acquisition controller to remote sensors or measurement modules over a differential RS-485 network. The protocol helps the system maintain communication integrity when sensor cables pass near motors, relays, or switching equipment, provided the installation uses correct grounding and termination. The half-duplex architecture is useful for request-response transactions in which a master polls one remote node at a time. The 10Mbps verified rating supports short, high-speed links, while lower baud rates may be necessary for longer cables or noisier installations. Use a common reference or carefully controlled ground path and avoid relying on the transceiver alone for surge or ESD protection. Exact common-mode range, fail-safe thresholds, and recommended network values require the official MAX3485 datasheet.
Recomendado
Industrial Communication Gateways
MAX3485CSA+ fits gateways that translate between an embedded processor and legacy RS-485 equipment, including process-control, energy-management, and remote-monitoring systems. Its single-driver/single-receiver arrangement is appropriate for a half-duplex bus, and the 3.3V supply can simplify integration with modern controller boards. At the connector, add the protection network required by the installation environment and maintain a controlled return path to reduce common-mode stress. The verified manufacturer description identifies the part as a true RS-485/RS-422 transceiver and the distributor description identifies an 8-SOIC package. The supplied data does not include ISO-surge ratings, ESD levels, or exact logic thresholds; therefore, gateway qualification should include environmental testing and review of the complete manufacturer datasheet.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MAX3485CSA+ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | XR3078XID-F | MAX3485CSA+T | MAX3485ESA-T | MAX3485ECSA+ | MAX3486CSA | MAX3465CSD+T |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Supported Protocols | RS-485/RS-422 | RS-485/RS-422 functional equivalent | RS-485/RS-422 | RS-485/RS-422 | MAX3485 family RS-485/RS-422 | RS-485/RS-422 family candidate | RS-485/RS-422 family candidate |
Principais diferenciais
- Confirmed 10Mbps RS-485/RS-422 performance (vs MAX3485ESA-T)
- Verified functional pin-compatible cross-reference (vs XR3078XID-F)
- Single transceiver integration (vs MAX3465CSD+T)
Notas de projeto
Place the MAX3485CSA+ close to the RS-485/RS-422 connector and route the differential pair as a controlled impedance and tightly coupled pair. Keep the logic-side traces away from the bus connector and from switching-node copper. The verified data confirms an 8-SOIC package but does not supply the complete pinout, so the layout must be checked against the official datasheet before release. Add optional protection components only after checking their capacitance and surge requirements against the target data rate.
Provide a stable 3.3V supply and local decoupling at the transceiver pins. The verified distributor description identifies the MAX3485 family as low-power and 3.3V-powered, but no supply-current or capacitor recommendation is present in the supplied data. Determine the actual load current, driver state, and thermal condition from the official datasheet, then validate the supply network with transient measurements. Do not assume that a nominal 3.3V rail guarantees adequate driver or receiver performance during bus faults.
Do not select a related MAX348x part solely because the package is also 8-SOIC. Confirm pin names, enable polarity, receiver fail-safe behavior, absolute maximum ratings, temperature grade, and supply-current limits for the exact ordering code. The supplied search results identify MAX3485CSA+T, MAX3485ESA-T, MAX3485ECSA+, MAX3486CSA, and MAX3465CSD+T as related references, but do not provide a complete compatibility matrix. Prototype and compare bus waveforms before committing to a replacement.
Treat the RS-485/RS-422 network as a system-level design. The verified MAX3485CSA+ rating reaches 10Mbps, but cable loss, node loading, topology, baud rate, grounding, and termination can reduce the practical margin. Use the official datasheet for common-mode limits and recommended network values, and verify the receiver fail-safe state during driver disable. For long cables or industrial environments, test radiated noise, ESD events, and fault-recovery behavior rather than relying only on nominal specifications.
Informações de conformidade
The supplied search results do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status for MAX3485CSA+. The target is an industrial communications interface IC, not an identified automotive-qualified part. Verify compliance using the exact Analog Devices ordering code and current material documentation.
