SN65HVD11D - 3.3V RS-485 Transceiver | Texas Instruments
MPN: SN65HVD11D ✓ সক্রিয়SN65HVD11D সারাংশ
A differential transceiver is an interface IC that transmits and receives data across a balanced pair of conductors. The driver converts a single-ended logic input into complementary differential outputs, while the receiver converts the differential bus voltage into a single-ended logic output. In the RS-485 hierarchy, the SN65HVD11D belongs to the class of multipoint differential bus interface ICs used by industrial automation, test equipment, building controls, and communications equipment.
Key features include operation from a 3.3 V power supply, three-state driver output, differential receive capability, one-eighth unit-load operation, and bus-pin ESD protection exceeding 16 kV HBM. The low unit loading allows multiple nodes to share a bus while controlling the loading presented by each receiver. The three-state output also permits multiple drivers to be connected to a shared bus when only one driver is enabled at a time.
The SN65HVD11D family is designed for balanced transmission lines and is stated to meet or exceed ANSI TIA/EIA-485-A and ISO 8482:1993. Its differential signaling improves noise immunity by deriving the receiver decision from the voltage difference between the A and B conductors rather than from either conductor relative to ground. This makes it appropriate for longer cable runs and electrically noisy factory environments when implemented with proper termination and biasing.
Typical uses include industrial RS-485 multidrop buses, factory sensor networks, building-automation controllers, instrument interfaces, and point-to-point RS-422 links. The eight-pin SOIC package supports conventional surface-mount assembly, while the low unit loading helps preserve bus loading margin as more nodes are added.
PCB design should provide a continuous return or reference path, route the differential pair together with matched spacing, and place termination and fail-safe bias components at physically appropriate bus locations. The supply should be decoupled close to the device, and unused digital inputs should not float. Bus protection, surge-current requirements, and cable length must be checked against the complete system rather than inferred from the transceiver rating alone.
This page combines verified manufacturer and distributor information, practical RS-485 design guidance, a same-package alternative comparison, and structured selection criteria. These details help engineers distinguish genuine footprint-compatible options from parts that only provide similar RS-485 functionality.
এর জন্য ড্রপ-ইন বিকল্প SN65HVD11D — একই package, pin-to-pin compatible। ভিন্ন package-এর যেসব পার্টে PCB rework প্রয়োজন সেগুলো বাদ দেওয়া হয়েছে।
এই সিরিজের ভ্যারিয়েন্ট
একই সিরিজের মডেল যেগুলো drop-in compatible SN65HVD11D (একই form factor এবং footprint) — পার্থক্য রয়েছে Package, Supply Voltage.
SN75HVD11D
✅ ড্রপ-ইন📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
SN65HVD10D
✅ ড্রপ-ইনমূল্যের জন্য যোগাযোগ করুন
ডেটাশিট দেখুন →SN75HVD10D
✅ ড্রপ-ইন📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
SN65HVD12D
✅ ড্রপ-ইনমূল্যের জন্য যোগাযোগ করুন
ডেটাশিট দেখুন →SN75HVD12D
✅ ড্রপ-ইন📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
SN65HVD11D বিশেষণ
| Product Type | Differential transceiver |
| Supported Interfaces | RS-485 and RS-422 |
| সাপ্লাই ভোল্টেজ | 3.3 V |
| Driver Output State | Three-state |
| Receiver Architecture | Differential input |
| Unit Load | 1/8 unit load |
| Maximum Bus Nodes | Up to 256 nodes |
| Bus-Pin ESD Protection | Exceeds 16 kV HBM |
| Standards | ANSI TIA/EIA-485-A and ISO 8482:1993 |
| অপারেটিং তাপমাত্রা | -40 °C to +85 °C |
| প্যাকেজ | 8-pin SOIC (D) |
| পিন সংখ্যা | 8 pins |
| মাউন্টিং টাইপ | Surface mount |
SN65HVD11D পিন কনফিগারেশন
| পিন 1 | RO — Receiver output |
| পিন 2 | RE — Receiver enable, active low |
| পিন 3 | DE — Driver enable, active high |
| পিন 4 | DI — Driver data input |
| পিন 5 | GND — Device ground |
| পিন 6 | A — Non-inverting bus terminal |
| পিন 7 | B — Inverting bus terminal |
| পিন 8 | VCC — 3.3 V power supply |
সাধারণ ব্যবহার
SN65HVD11D এর জন্য উপযুক্ত 6 অ্যাপ্লিকেশনs: Industrial RS-485 Multidrop Networks, Factory Sensor and Actuator Interfaces, Building Automation Controllers, Point-to-Point RS-422 Links, Test and Measurement Equipment, Low-Voltage Communications Equipment.
Industrial RS-485 Multidrop Networks
The SN65HVD11D fits industrial multidrop networks because its 3.3 V operation, one-eighth unit loading, and support for up to 256 nodes reduce the receiver burden placed on a shared bus. It can connect a controller to remote sensors, actuators, gateways, or data modules over a balanced RS-485 pair. The three-state driver permits controlled bus sharing, while differential signaling improves common-mode noise immunity. Deployment still requires a correct termination strategy, fail-safe biasing where required, and verification that the complete bus stays within the permitted node count and data rate.
সুপারিশকৃত
Factory Sensor and Actuator Interfaces
The SN65HVD11D is suitable for linking factory sensors and actuators to a 3.3 V controller when the field bus carries data over appreciable cable lengths. Its one-eighth unit-load receiver can accommodate a larger population of field devices than a standard-unit-load transceiver, while the differential A/B interface rejects noise coupled equally onto both conductors. The 3.3 V supply also simplifies integration with modern embedded processors. Engineers should add appropriate surge and ESD protection at exposed connectors and keep the differential route away from switching-node and motor-power paths.
সুপারিশকৃত
Building Automation Controllers
The SN65HVD11D can connect a low-voltage building-automation controller to distributed sensors, lighting modules, or access equipment using a 3.3 V RS-485 network. Its support for up to 256 nodes is useful in installations where many compact controllers share a building backbone, and the three-state driver supports controlled multidrop communication. Differential operation provides better noise immunity than a single-ended interface when cables pass near lighting and motor-control equipment. Proper grounding, cable segmentation, and bus termination remain important when building wiring creates uneven stubs or long branches.
সুপারিশকৃত
Point-to-Point RS-422 Links
The SN65HVD11D can also support point-to-point RS-422 links between two boards when the interface requirements are compatible with its driver, receiver, and logic thresholds. The balanced differential output and receive path provide a robust signal over cables that may pass near industrial equipment, while the 3.3 V supply reduces the need for level translation. Because the verified product information describes both RS-485 and RS-422 use, the selected SN65HVD11D option must be checked against the exact RS-422 drive and receive requirements before production release.
সুপারিশকৃত
Test and Measurement Equipment
The SN65HVD11D is applicable to test and measurement systems that expose a 3.3 V differential instrument bus to remote fixtures or laboratory equipment. Its low unit load allows numerous attached nodes to share a bus without quickly exhausting the permitted receiver-load budget, while bus-pin ESD protection exceeding 16 kV HBM adds useful protection at a connector interface. Differential signaling improves robustness against laboratory ground offsets and common-mode interference. Engineers must still define the expected cable length, data rate, isolation boundary, and termination arrangement to obtain repeatable measurements.
সুপারিশকৃত
Low-Voltage Communications Equipment
The SN65HVD11D supports low-voltage communications equipment that combines a 3.3 V processor or controller with an external balanced bus. Its one-eighth unit loading permits up to 256 nodes according to the verified TI information, and its three-state driver allows several transmitters to share conductors when only one is active. The receiver’s differential architecture improves common-mode rejection in compact products where internal switching converters and display electronics can create interference. Layout should preserve a continuous ground reference, keep the A/B pair tightly coupled, and separate transceiver routing from noisy power-converter nodes.
সুপারিশকৃত
সুপারিশকৃত পণ্যের সারসংক্ষেপ
এর জন্য ইঞ্জিনিয়ারিং রেফারেন্স ডেটা SN65HVD11D — তুলনা, ডিজাইন গাইডেন্স এবং কমপ্লায়েন্স তথ্য।
নির্বাচন গাইড
বিকল্পের সাথে তুলনা
| পারামিটার | এই পণ্য | SN75HVD11D | SN65HVD10D | SN75HVD10D | SN65HVD12D | SN75HVD12D |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOIC-8 (D) | SOIC-8 (D) - same package | SOIC-8 (D) - same package | SOIC-8 (D) - same package | SOIC-8 (D) - same package | SOIC-8 (D) - same package |
| Supply Voltage | 3.3 V | 5 V | 3.3 V | 5 V | 3.3 V | 5 V |
| Interface | RS-485 and RS-422 differential transceiver | RS-485 and RS-422 differential transceiver | RS-485 and RS-422 differential transceiver | RS-485 and RS-422 differential transceiver | RS-485 and RS-422 differential transceiver | RS-485 and RS-422 differential transceiver |
| Driver Output | Three-state | Three-state | Three-state | Three-state | Three-state | Three-state |
| Standards | ANSI TIA/EIA-485-A and ISO 8482:1993 | ANSI TIA/EIA-485-A and ISO 8482:1993 | ANSI TIA/EIA-485-A and ISO 8482:1993 | ANSI TIA/EIA-485-A and ISO 8482:1993 | ANSI TIA/EIA-485-A and ISO 8482:1993 | ANSI TIA/EIA-485-A and ISO 8482:1993 |
মূল পার্থক্যসমূহ
- Lower bus loading supports more connected nodes (বনামSN65HVD12D)
- Matches a 3.3 V system supply (বনামSN75HVD11D)
- Verified field-bus node capacity (বনামSN65HVD10D)
- Documented bus-pin ESD capability (বনামSN75HVD12D)
ডিজাইন নোট
Route the A and B conductors as a tightly coupled differential pair with consistent impedance and minimal vias. Keep the pair away from switching nodes, relay coils, motor traces, and other high-current paths. Provide a continuous ground reference beneath or adjacent to the interface route, but avoid allowing fast return currents to cross the bus path. The TI family is intended for balanced lines, so preserving the physical differential geometry is important to realize the benefit of the receiver architecture.
Do not assume that matching packages alone guarantee a drop-in replacement. SN65HVD11D operates from 3.3 V, while the listed SN75 variants use a 5 V supply; a direct substitution can therefore exceed an absolute maximum rating. Before replacing the device, compare supply voltage, receiver thresholds, unit load, supported data rate, driver and enable polarity, fail-safe behavior, and the exact eight-pin pinout against the manufacturer datasheets.
Place the transceiver supply decoupling capacitor immediately beside VCC and the ground connection, with the shortest possible return path to the device ground pin. Follow the manufacturer datasheet for the recommended capacitor value and placement. Decoupling helps keep supply transients away from the receiver input, while a clean ground reference prevents bus common-mode voltage from shifting unpredictably relative to the transceiver.
For an RS-485 bus, install termination and fail-safe biasing only where the network topology requires them. Typically, termination belongs at the physical ends of the trunk rather than at every node, and bias resistors establish a defined state when no driver is active. Long stubs increase reflected impedance and can cause communication errors. Validate the cable length, node spacing, termination, and data rate together rather than optimizing each parameter independently.
কমপ্লায়েন্স তথ্য
The verified snippets identify ANSI TIA/EIA-485-A and ISO 8482:1993 as applicable bus standards. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not included in the supplied product data and are therefore recorded as unknown.
