SN65HVD75D - 3.3V 20Mbps RS-485 Transceiver | Texas Instruments
N.º da peça: SN65HVD75D ✓ AtivoSN65HVD75D Visão geral
An RS-485 transceiver is an interface IC that combines a differential line driver and differential receiver, allowing digital data to be transmitted reliably over balanced, multipoint communication buses. The SN65HVD75 belongs to the transceiver hierarchy of interface ICs, differential line-driver and receiver circuits, and industrial communication semiconductors. Its half-duplex configuration permits a shared pair of conductors to carry data in either direction, but only one direction at a time.
The SN65HVD75D operates from a 3.3 V supply, reaches 20 Mbps, and provides IEC ESD protection on the bus pins. Its logic interface supports 3.3 V and 5 V controllers, which simplifies connection to mixed-voltage digital systems. The wide -40°C to 125°C temperature range also makes the device suitable for industrial environments where commercial-temperature interface ICs may be inadequate. Exact ESD ratings, receiver thresholds, and electrical limits must be confirmed in the manufacturer datasheet.
Each device combines a differential driver and differential receiver operating from one 3.3 V power supply. The bus pins are designed for robust ESD-event handling, including Human Body Model and IEC Contact Discharge protection. The manufacturer datasheet also identifies 250 kbps, 20 Mbps, and 50 Mbps signaling-rate options across the SN65HVD7x family, with 20 Mbps specifically associated with the SN65HVD75.
Typical uses include industrial automation controllers, factory data buses, industrial instrumentation, building automation, and communications equipment operating on RS-485 networks. Its 20 Mbps capability supports high-speed half-duplex links, while 5 V-tolerant logic inputs ease interfacing with both 3.3 V and 5 V controllers. The half-duplex arrangement also requires careful direction-control design because the driver and receiver share the same bus pair.
When designing the circuit, place a 100 nF ceramic bypass capacitor close to the supply pins and use a 3.3 V source capable of supporting the transceiver's operating current. The manufacturer recommends the TPS76333 for a suitable 3.3 V supply and the SN6501 for isolated power-supply designs. Bus routing should minimize stubs and maintain controlled differential impedance.
This page combines verified manufacturer and distributor information, transparent pricing-status notes, same-family replacement analysis, and practical RS-485 design guidance. It also distinguishes verified electrical facts from parameters that still require confirmation against the complete SN65HVD7x manufacturer datasheet.
Alternativas drop-in para SN65HVD75D — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com SN65HVD75D (mesmo formato e footprint) — diferindo em Package, Duplex, Operating Temperature Range, Product Type.
SN65HVD72D
✅ Drop-InConsulte o preço
Ver ficha técnica →SN65HVD73DGS
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →SN65HVD74D
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
SN65HVD75D Especificações
| Product Type | Half-duplex RS-485 transceiver |
| Tensão de alimentação | 3.3 V |
| Maximum Signaling Rate | 20 Mbps |
| Logic Input Compatibility | 5 V tolerant; compatible with 3.3 V or 5 V controllers |
| ESD Protection | IEC ESD protection on bus pins |
| ESD Test Model | Human Body Model and IEC Contact Discharge |
| Faixa de temperatura de operação | -40°C to 125°C |
| Encapsulamento | 8-pin SOIC (D) |
| Tipo de montagem | Surface mount |
| Driver and Receiver Architecture | One differential driver and one differential receiver |
| Duplex Mode | Half-duplex |
| Bus Standards | RS-485 and RS-422 compatible transceiver |
| Recommended Supply Bypass | 100 nF ceramic capacitor |
| Recommended 3.3 V Regulator | TPS76333 |
| Recommended Isolated Supply Reference | SN6501 |
Guia de Configuração de Pinos do SN65HVD75D 8-pin soic (d)
Configuração de pinos para SN65HVD75D (pacote 8-pin soic (d)). 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 SN65HVD75D.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
SN65HVD75D é adequado para 6 aplicaçãos: Industrial Automation Data Bus, Factory Sensor and Controller Network, Building Automation Communication, Industrial Instrumentation, Communications Equipment, Protected Field-Bus Interface.
Industrial Automation Data Bus
The SN65HVD75D fits high-speed industrial automation links because it combines a 3.3 V supply with 20 Mbps half-duplex RS-485 operation and IEC ESD-protected bus pins. Its 5 V-tolerant logic inputs allow connection to both 3.3 V and 5 V controllers, which helps bridge controller generations without changing the transceiver package. Install it at the bus endpoint with controlled differential routing, and avoid long unterminated stubs. The -40°C to 125°C rating also supports industrial temperature ranges, although the final system still requires applicable surge, grounding, and EMC validation.
Recomendado
Factory Sensor and Controller Network
A SN65HVD75D can connect distributed sensors, actuators, and machine controllers over a shared RS-485 bus when the design benefits from a 20 Mbps signaling rate. The differential driver and receiver support a balanced network, while half-duplex operation conserves wiring by sharing one bus pair. The 5 V-tolerant inputs ease interfacing with legacy controllers, and IEC ESD protection improves robustness at exposed connectors. Designers should still define termination, common-mode range, grounding, fault protection, and stub length from the complete datasheet and installed-cable characteristics.
Recomendado
Building Automation Communication
The SN65HVD75D is appropriate for controller links in building automation equipment where a compact RS-485 interface and faster signaling are useful. Its 20 Mbps capability provides headroom for controller and status traffic, while the 8-pin SOIC package simplifies board-level integration. The 5 V-tolerant logic interface can simplify connections to 3.3 V and 5 V building controllers, and the -40°C to 125°C range supports varied enclosure temperatures. Commissioning should verify surge and ESD requirements, bus topology, termination, and isolation strategy for field-side wiring.
Recomendado
Industrial Instrumentation
The SN65HVD75D can serve as the communication interface in measurement and instrumentation equipment that exchanges data over RS-485. Its 20 Mbps rate supports short, high-speed links or heavier software traffic compared with slower transceivers, while the differential receiver is suited to noisy industrial environments. IEC ESD protection on the bus pins adds useful defense for cables connected through enclosure panels. For accurate measurements, keep the transceiver supply and analog circuitry appropriately partitioned, use a clean 3.3 V source such as the recommended TPS76333, and confirm common-mode limits in the final installation.
Recomendado
Communications Equipment
The SN65HVD75D supports compact communications equipment that uses a point-to-point or multidrop half-duplex RS-485 link. The 3.3 V operating supply suits modern mixed-signal systems, and the 5 V-tolerant inputs allow interoperability with older controller logic. At 20 Mbps, the device is appropriate for short links or systems requiring high burst throughput, provided cable loss and reflections are controlled. Place the 100 nF ceramic supply capacitor close to the device, route the differential pair consistently, and validate EMC performance at the enclosure interface.
Recomendado
Protected Field-Bus Interface
The SN65HVD75D is suitable for field-bus nodes requiring a 3.3 V transceiver with IEC ESD-protected bus pins. Its differential signaling enables communication over balanced cabling, and the 20 Mbps rate supports demanding equipment links. For isolated designs, the manufacturer datasheet references the SN6501 for isolated power-supply architectures, while a local 3.3 V regulator such as the TPS76333 can serve non-isolated nodes. ESD protection should not be treated as a substitute for surge protection, fuses, or grounding, so external protection must be selected according to the installation hazard level.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para SN65HVD75D — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | SN65HVD72D | SN65HVD73D | SN65HVD74D |
|---|---|---|---|---|
| Package | 8-pin SOIC (D) | 8-pin SOIC (D) | 8-pin SOIC (D) | 8-pin SOIC (D) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Type | Half-duplex RS-485 transceiver | RS-485 transceiver | RS-485 transceiver | RS-485 transceiver |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
Principais diferenciais
- Verified 20 Mbps signaling option (vs SN65HVD72D)
- IEC ESD-protected bus interface (vs SN65HVD73D)
- Wide industrial temperature coverage (vs SN65HVD74D)
- Mixed-voltage controller compatibility (vs SN65HVD72D)
Notas de projeto
Place a 100 nF ceramic bypass capacitor as close as practical to the transceiver supply pins. According to the Texas Instruments manufacturer datasheet, buffering each supply with this capacitor supports reliable operation at all supported data rates and supply voltages. Route the capacitor directly to the device ground reference without long traces, and use the recommended TPS76333 when a dedicated 3.3 V regulator is required.
Route the RS-485 driver and receiver connections as a tightly coupled differential pair, maintain a consistent impedance throughout the board, and minimize vias and stubs. The SN65HVD75D is a half-duplex device, so the direction-control and bus-enable design must prevent uncontrolled driver contention. Keep the communication interface away from noisy switching nodes and provide a clear return-current path.
Do not treat IEC ESD protection as a complete surge-protection strategy. The SN65HVD75D protects bus pins against specified ESD events, but cable transients, ground-potential differences, and industrial surge hazards may require external protection. Confirm the common-mode voltage range, receiver thresholds, fail-safe behavior, termination strategy, and node grounding before releasing a field-connected industrial design.
Use the SN65HVD75D 5 V-tolerant logic inputs to simplify mixed-controller interfaces, but do not assume every input voltage is equally noise-immune. Keep driver-enable and receiver-enable traces short and away from the differential bus pair. If galvanic isolation is required, the manufacturer datasheet identifies the SN6501 as an isolated power-supply reference; suitable isolation components and barrier-layout practices must still be evaluated separately.
Informações de conformidade
The supplied verified results do not extract explicit compliance declarations. No RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals claim has been inferred from the general product description.