SN65HVD3082EDR - 200kbps Low-Power RS-485 | Texas Instruments
MPN: SN65HVD3082EDR ✓ AktifSN65HVD3082EDR Genel Bakış
An RS-485 transceiver is an interface IC that combines differential line driver and receiver functions into a two-wire, half-duplex communication link. RS-485 belongs to the broader interface-IC hierarchy and is widely used where multiple distributed devices must communicate over a relatively long cable. Differential signaling improves common-mode noise rejection, while controlled transition times reduce unwanted emissions and help maintain reliable operation across industrial environments.
The SN65HVD3082EDR provides one driver and one receiver, a 4.5 V to 5.5 V supply range, and TIA/EIA-485A compliance according to the retrieved manufacturer information. Its low-power architecture is especially useful when the transceiver must remain connected to a bus while minimizing standby consumption. The device also includes bus-pin ESD protection up to 15 kV, a feature important for physically exposed communication ports.
Typical applications include industrial RS-485 networks, building-control equipment, factory automation, remote sensor nodes, and low-speed serial data acquisition. The half-duplex arrangement requires the design to manage transmit-enable direction control so that the driver does not contend with the receiver during reception. Bus termination, biasing, grounding, and cable routing remain essential parts of a reliable implementation.
The key design consideration is ensuring that the external bus network and transceiver control logic match the application’s transmission direction. A 120-ohm termination resistor is commonly placed at each end of a properly terminated RS-485 cable, while fail-safe biasing should be designed for the system’s idle state. The SOIC-8 package simplifies assembly, but exposed bus pins require careful layout and protection planning.
This product page combines verified manufacturer and distributor information, structured application guidance, and explicit data-availability markers for parameters not present in the retrieved source set. It is intended to support engineering comparison and sourcing without inferring unverified electrical values.
Drop-in alternatifler için SN65HVD3082EDR — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu Serideki Variantlar
Yedek parça uyumlu olan aynı serideki modeller SN65HVD3082EDR (aynı form faktörü ve ayağa oturma) — farklı olan Package, Product Type, Protocol, RoHS Status, Signaling Rate.
SN65HVD3082ED
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SN65HVD3082EDR Özellikler
| Product Type | Half-duplex RS-485 transceiver |
| Number of Drivers | 1 |
| Number of Receivers | 1 |
| Signaling Rate | Up to 200 kbps |
| Besleme Gerilimi | 4.5 V to 5.5 V |
| Active Mode Quiescent Current | 0.3 mA |
| Shutdown Mode Current | 1 nA |
| Bus Unit Load | 1/8 unit load |
| Maximum Bus Nodes | Up to 256 nodes |
| Bus-Pin ESD Protection | Up to 15 kV |
| Standard Compliance | TIA/EIA-485A |
| Duplex Mode | Half-duplex |
| Paket | 8-pin SOIC |
| Montaj Türü | Surface mount |
SN65HVD3082EDR 8-pin soic Pin Yapısı Kılavuzu
SN65HVD3082EDR (8-pin soic paket) için pin yapısı. Pin numaralandırma, işlevleri ve bağlantı şemaları üretici veri kitapçığında tanımlanmıştır. Doğru ayak ve soldurma kılavuzları için onu referans alın.
Ayrıntılı pin çıkış verisi mevcut değil: SN65HVD3082EDR.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
SN65HVD3082EDR için uygundur 6 uygulamas: Industrial Automation Networks, Building Control Systems, Remote Sensor Networks, Factory Data Acquisition, Instrumentation and Test Equipment, HVAC and Environmental Monitoring.
Industrial Automation Networks
The SN65HVD3082EDR fits low-speed industrial automation links because it supports RS-485 signaling up to 200 kbps and a 1/8 unit load for up to 256 nodes. Place it at a controller, sensor gateway, or remote I/O module that communicates over balanced twisted-pair cabling. The 4.5 V to 5.5 V supply range supports 5 V equipment, while controlled transition times help reduce bus emissions. Verify cable length, topology, grounding, and termination against the complete application requirements.
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Building Control Systems
Use the SN65HVD3082EDR for building-control equipment that exchanges low-speed commands and status data over an RS-485 backbone. Its 200 kbps maximum signaling rate is suitable for many supervisory and sensor-network links, and the half-duplex architecture supports a shared two-wire bus. The 0.3 mA active quiescent current can reduce standby load in distributed endpoints. External biasing and termination should be designed for the idle state and fault conditions.
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Remote Sensor Networks
The SN65HVD3082EDR is appropriate for remote sensor nodes that periodically report measurements through a shared RS-485 cable. Its low shutdown current of 1 nA can help conserve power in duty-cycled endpoints, while the 200 kbps rate supports moderate update intervals and control traffic. Direction control must prevent simultaneous transmit and receive contention. Confirm that the cable length and node loading preserve reliable signal margins.
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Factory Data Acquisition
In factory data-acquisition systems, the SN65HVD3082EDR can connect measurement equipment, programmable controllers, and monitoring nodes to a shared differential bus. The one-driver, one-receiver arrangement is suited to half-duplex communication, and the 1/8 unit load supports dense bus arrangements when topology and cable limitations are respected. The transceiver’s bus-pin ESD protection up to 15 kV adds useful robustness for industrial cabling. Add surge and common-mode protection based on the installation environment.
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Instrumentation and Test Equipment
The SN65HVD3082EDR can interface low-speed control and measurement systems that use RS-485 as a reliable wired communication medium. Its 200 kbps signaling rate accommodates many instrument status and configuration exchanges, while differential signaling helps reject common-mode noise. The device should be placed near the cable connector or protected board edge, with careful separation from noisy analog and switching circuitry. Use the official datasheet to verify timing, input thresholds, and pin functions.
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HVAC and Environmental Monitoring
The SN65HVD3082EDR is suitable for HVAC controllers, environmental monitors, and building equipment that use RS-485 for distributed status reporting. Its low active quiescent current helps address power constraints in remote endpoints, and the 1/8 unit load permits more nodes than a full-unit-load receiver when the bus is properly designed. A robust system should include fail-safe biasing, cable termination at physical endpoints, and surge protection at exposed connectors.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: SN65HVD3082EDR — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | SN65HVD3082ED |
|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC - same package |
| Brand | Texas Instruments | Texas Instruments |
Ana Farklılayıcılar
- Low active and shutdown power for a wired RS-485 interface (karşılaştırma:SN65HVD3082ED)
- High bus-node density (karşılaştırma:SN65HVD3082ED)
- ESR protection for exposed communication ports (karşılaştırma:SN65HVD3082ED)
Tasarım Notları
Place the transceiver and its protection network near the RS-485 connector, with the bus traces routed as a differential pair and kept away from switching nodes and high-current paths. Use a solid ground-plane reference and minimize stub branches from the bus. The supplied information does not include the complete pinout or recommended PCB layout, so validate every connection against the official Texas Instruments datasheet before fabrication.
Terminate the bus at the physical endpoints, commonly with 120-ohm resistors, and design fail-safe biasing for the intended idle state. A 1/8 unit-load transceiver can support a larger node population than a full-unit-load device, but long cables, branches, and excessive loading can still degrade margins. Confirm topology, cable length, baud rate, and termination using the complete system specification.
Do not assume that the shutdown current or the maximum node count is the complete system power and loading specification. Direction-control logic must prevent transmit contention, and the external bias network should not fight the bus during receive or shutdown. The retrieved data does not verify the exact pin mapping, operating temperature, RoHS status, or pricing, so those items require manufacturer or distributor confirmation.
Uyumluluk Bilgisi
The retrieved comparison result describes the related SN65HVD3082ED as RoHS-compliant, but it does not provide a verified compliance statement for SN65HVD3082EDR. Compliance fields remain unknown for the target part.