SN65HVD10D - 3.3V RS-485 Transceiver 32Mbps | Texas Instruments
MPN: SN65HVD10D ✓ نشطSN65HVD10D نظرة عامة
An RS-485 transceiver is the physical-layer building block of balanced industrial communication. A differential bus rejects common-mode noise, supports long cable runs, and allows multiple nodes to share the same pair of wires in a multi-drop arrangement. The SN65HVD10 family operates from a single 3.3 V supply, which makes it a natural fit for 3.3 V microcontrollers, FPGAs, and industrial controllers that no longer include 5 V rails on the board.
Key features include bus-pin ESD protection exceeding 16 kV HBM, compliance with the ANSI TIA/EIA-485-A and ISO 8482:1993 standards for balanced digital multipoint systems, and a 3-state driver output for bus segmentation. The half-duplex architecture uses separate driver-enable and receiver-enable inputs so transmit and receive direction can be controlled by a single GPIO direction pin. Device variants in the same family cover 1/2 and 1/8 unit-load options for denser multi-drop networks.
Internally, the driver is a differential output stage with complementary A and B outputs, while the receiver is a differential comparator that produces a single-ended logic output. Because both halves share one 3.3 V rail and one ground, the ground reference between the transceiver and the cable shield must be handled carefully; a bus reference design typically adds fail-safe biasing resistors and a 120 ohm termination resistor at each physical end of the bus.
Typical applications include industrial sensor and transducer buses, HVAC and building automation controllers, industrial gateways, remote I/O modules, and data-acquisition instrumentation running on 3.3 V logic. The 32 Mbps rating supports both legacy 115.2 kbps RS-485 networks and faster proprietary or Modbus RTU-over-TCP gateway links.
When laying out the board, place the 0.1 uF and 1 uF decoupling capacitors directly across VCC and GND pins, keep the bus traces short and matched, and provide a chassis or surge reference path for the ESD structures on the bus pins. Avoid placing the transceiver in series with the signal path, and do not forget termination and fail-safe biasing on long or noisy segments.
This page combines verified distributor pricing, package-accurate pinout data, drop-in alternatives drawn from the same TI bus-transceiver family, and practical layout notes that go beyond the manufacturer datasheet.
بدائل مباشرة لـ SN65HVD10D — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع SN65HVD10D (نفس عامل الشكل والبصمة) — يختلف في Package, Supply Voltage.
SN65HVD10DR
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
SN65HVD11D
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←SN65HVD12D
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←SN75HVD10D
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
SN75HVD11D
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
SN75HVD12D
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
SN65HVD10D المواصفات
| Device Type | Half-duplex RS-485 / RS-422 transceiver (1/1) |
| جهد التغذية | 3.3 V (single supply) |
| Maximum Data Rate | 32 Mbps |
| العلبة | 8-pin SOIC (D package) |
| نوع التركيب | Surface Mount |
| Bus-Pin ESD Protection | Exceeds 16 kV HBM |
| Standards Compliance | ANSI TIA/EIA-485-A, ISO 8482:1993 |
| Driver Output | 3-state differential line driver |
| Receiver Output | Differential input line receiver, single-ended logic output |
| Bus-Fault Protection | 5 A typical (family feature per distributor datasheet listing) |
| نطاق درجة حرارة التشغيل | -55 °C to +125 °C (per distributor listing; commercial-grade range per TI datasheet) |
| Logic Levels | 3.3 V CMOS-compatible |
| Number of Transceivers | 1 |
| مستوى MSL | MSL 1 |
| Pricing Reference | From $1.4594 (LCSC) as of 2026-10-30 |
تكوين أطراف SN65HVD10D
| دبوس 1 | RO — Receive output, single-ended logic data from the receiver |
| دبوس 2 | /RE — Receiver enable input, active low |
| دبوس 3 | DE — Driver enable input, active high |
| دبوس 4 | DI — Driver data input |
| دبوس 5 | GND — Ground reference |
| دبوس 6 | A — Non-inverting bus driver output and receiver input |
| دبوس 7 | B — Inverting bus driver output and receiver input |
| دبوس 8 | VCC — 3.3 V supply |
التطبيقات النموذجية
SN65HVD10D مناسب لـ 6 التطبيقs: Industrial Sensor and Transducer Bus, HVAC and Building Automation Controller, Industrial Gateway and Protocol Converter, Remote I/O and Data Acquisition Module, Test and Measurement Instrumentation, LED Lighting and Digital Signage Control.
Industrial Sensor and Transducer Bus
The SN65HVD10D fits 3.3 V industrial sensor buses where multiple remote transmitters share one shielded twisted pair. Its 32 Mbps capability gives margin above the 115.2 kbps or 1 Mbps rates typical of Modbus RTU sensor networks, so a single bus can also carry diagnostic data without slowing the polling cycle. The 3-state differential driver lets the controller disable a node's transmitter so that up to 32 unit-load devices can share the pair without contention. Bus-pin ESD protection exceeding 16 kV HBM protects the transceiver when field cables are connected and disconnected at the panel, and the 8-pin SOIC footprint is easy to hand-solder on field-replaceable sensor cards.
موصى به
HVAC and Building Automation Controller
Building automation controllers routinely expose their thermostat, damper and valve nodes on an RS-485 backbone, and the SN65HVD10D supplies the physical layer on a 3.3 V logic rail shared with the controller MCU. Half-duplex operation keeps only one transceiver active on the pair, which is essential for the token-passing style polling used by BACnet-style and proprietary building buses. With 32 Mbps of headroom the same wiring can later carry firmware update traffic without changing the transceiver. The differential receiver rejects the common-mode noise found when automation cables run parallel to mains wiring, and the small 8-pin SOIC outline leaves board area for the surrounding relay drivers and isolation barrier.
موصى به
Industrial Gateway and Protocol Converter
Gateways that translate Modbus RTU on the field side to Ethernet or another serial standard on the host side use the SN65HVD10D as the RS-485 physical layer on a 3.3 V logic domain. The 32 Mbps rating supports both legacy 9.6 kbps to 115.2 kbps Modbus RTU traffic and high-speed bridging to other protocols without a second transceiver. Because the driver is 3-state, the gateway can hold the bus released while the host side is serviced, avoiding contention on the shared pair. The device also tolerates the bus-fault and surge conditions common in factory-floor wiring, while the SOIC-8 package allows the isolated and non-isolated versions of the gateway to share the same board outline.
موصى به
Remote I/O and Data Acquisition Module
Distributed I/O modules that aggregate analog and digital channels across a plant use the SN65HVD10D to reach back to a central controller over long cable runs. The balanced differential interface, combined with 120 ohm end-of-bus termination, keeps data integrity over hundreds of metres of shielded twisted pair, while the 3.3 V supply matches the modern 3.3 V ADC and MCU ecosystem found in acquisition hardware. Because the receiver is differential and the operating voltage is low, the module can be battery-assisted at the edge and still run from a single low-voltage rail. The 16 kV HBM bus-pin ESD rating also protects the module when field wiring is connected in an uncontrolled environment.
موصى به
Test and Measurement Instrumentation
Lab and field test equipment often chains several instruments over an RS-485 backplane to share trigger and status data. The SN65HVD10D suits modern instrument architectures built around 3.3 V FPGAs or DSPs, since no external level translator is needed between the transceiver and the logic section. The 32 Mbps rating lets the instrument bus carry high-rate sample-and-hold metadata alongside slow configuration traffic, and the 3-state driver supports daisy-chained segments where only one device drives at a time. With the transceiver in an 8-pin SOIC, it fits alongside the analog front end without competing for board area, and the low 3.3 V supply reduces the thermal load inside sealed portable instruments.
موصى به
LED Lighting and Digital Signage Control
Commercial LED lighting systems and digital signage controllers distribute brightness and colour commands over long daisy-chained RS-485 runs, which is exactly where a 32 Mbps, low-power half-duplex transceiver helps. The SN65HVD10D operates from the same 3.3 V rail as the lighting controller MCU, and the 3-state driver guarantees that only the addressed fixture drives the pair during a command frame, preventing bus contention across dozens of nodes. The differential receiver maintains margin over cable lengths that commonly run around lighting racks and through building walls, while the wide 3.3 V operating range of the family suits cost-optimised lighting controllers. The SOIC-8 package is also convenient for the small driver boards placed at each fixture or sign module.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ SN65HVD10D — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | SN65HVD10DR | SN65HVD11D | SN65HVD12D | SN75HVD10D |
|---|---|---|---|---|---|
| Package | SOIC-8 (D) | SOIC-8 (D) - same | SOIC-8 (D) - same | SOIC-8 (D) - same | SOIC-8 (D) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 5 V |
| Maximum Data Rate | 32 Mbps | 32 Mbps | 32 Mbps | 32 Mbps | 32 Mbps |
| Transceiver Configuration | Half-duplex, 1/1 (driver + receiver) | Half-duplex, 1/1 | Half-duplex, 1/1 | Half-duplex, 1/1 | Half-duplex, 1/1 |
| Unit Load / Bus Node Count | 1 unit load (up to 32 nodes) | 1 unit load (up to 32 nodes) | 1/2 unit load (up to 64 nodes) | 1/8 unit load (up to 256 nodes) | 1 unit load (up to 32 nodes) |
| Standards Compliance | ANSI TIA/EIA-485-A, ISO 8482:1993 | ANSI TIA/EIA-485-A, ISO 8482:1993 | ANSI TIA/EIA-485-A, ISO 8482:1993 | ANSI TIA/EIA-485-A, ISO 8482:1993 | ANSI TIA/EIA-485-A, ISO 8482:1993 |
أبرز الفروقات
- Same 3.3 V rail as modern MCU and FPGA logic (مقابلSN75HVD10D)
- Higher drive strength for noisy or long segments (مقابلSN65HVD12D)
- Identical die availability in reel packaging (مقابلSN65HVD10DR)
ملاحظات التصميم
Place a 0.1 uF ceramic decoupling capacitor directly across the VCC (pin 8) and GND (pin 5) pins, with a 1 uF bulk capacitor on the same 3.3 V rail close to the device. Keep the loop area of both capacitors as small as possible. The RS-485 bus pins tolerate bus faults, but the supply pins do not, and ringing on a 3.3 V rail can corrupt the differential receiver threshold and cause intermittent data errors that are hard to debug.
Route the A and B bus traces as a tightly coupled differential pair with matched length and as little stub as possible; avoid routing over split plane edges. Terminate the bus with a 120 ohm resistor across A and B at each physical end only, and add fail-safe biasing resistors so the idle differential voltage is defined when no driver is enabled. Terminating both ends of a short bench cable is a common cause of reflections and reduced usable cable length.
Half-duplex transceivers require careful DE and /RE control. Leaving the driver enabled while another node transmits causes driver contention that raises bus voltage and can damage the output stage. A common firmware-safe pattern is to assert DE together with /RE low for transmit and deassert DE for receive, with a deliberate dead time after the last stop bit. Also verify that the transceiver logic thresholds match the 3.3 V MCU, since 5 V family members such as the SN75HVD10D are not 3.3 V compatible.
Tie the transceiver ground to the same reference as the cable shield or chassis ground through a single low-impedance path near the connector, and keep the ESD discharge path away from sensitive logic. In long-cable industrial installations, add a surge protection network (TVS diodes or a gas-discharge device with series impedance) at the line entry, and prefer shielded twisted-pair cabling to limit radiated emissions that can disturb neighbouring RS-485 segments.
معلومات الامتثال
No explicit RoHS, REACH or AEC-Q100 statements were present in the verified distributor data for SN65HVD10D; the part is an industrial/commercial interface IC and is not AEC-Q100 qualified. Compliance should be confirmed on the TI product page for the specific orderable code.
