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Texas Instruments SN65HVD3088EDR
- Part No.:
- SN65HVD3088EDR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN65HVD3088EDR.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,105
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Product details
Overview
SN65HVD3088EDR from Texas Instruments is a half-duplex RS-485 transceiver optimized for high-speed industrial data links, delivering 20 Mbps signaling rate, ±15 kV HBM ESD protection on bus pins, 1 nA shutdown current, –40°C to +85°C operating temperature, and 1/8 unit load (256-node bus capacity). It interfaces between UART logic and twisted-pair RS-485 buses in motor drives and energy metering gateways.
For engineers reviewing the SN65HVD3088EDR datasheet, SN65HVD3088EDR pinout, SN65HVD3088EDR application, or SN65HVD3088EDR equivalent, key selection criteria include high-speed timing budget compliance, fail-safe receiver behavior under open/shorted bus conditions, thermal shutdown activation at 165°C, and SOIC-8 package compatibility with legacy SN75176 footprints.
Technical Context
The SN65HVD3088EDR implements a differential driver/receiver pair with controlled slew-rate outputs to minimize EMI on long cables, integrated fail-safe biasing for open/short/idle bus states, and thermal shutdown that forces high-impedance outputs above 165°C. Its receiver hysteresis is fixed at 30 mV to reject common-mode noise.
It operates from a single 4.5–5.5 V supply, draws 425–900 µA in active mode (driver + receiver enabled), and supports bus common-mode voltage range of –7 V to +12 V - enabling robust operation in electrically noisy industrial environments with ground potential differences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 20 Mbps - enables real-time control loop updates in servo drives and fast polling in multi-node energy meter networks. |
| Differential Output Voltage | 1.5–2.3 V into 54 Ω - meets TIA/EIA-485A minimum drive strength for reliable detection across 1200 m cable runs. |
| Receiver Input Threshold | VIT+ = –10 mV, VIT– = –115 mV - ensures deterministic logic-level decision with 30 mV hysteresis against noise-induced glitches. |
| Bus-Pin ESD Protection | ±15 kV HBM - eliminates need for external TVS diodes in Class B industrial EMC designs per IEC 61000-4-2. |
| Supply Current (Active) | 425–900 µA - allows continuous operation in battery-backed PLC backplanes without thermal derating. |
| Shutdown Current | 0.001–2 µA - supports ultra-low-power wake-on-RS485 in always-on remote I/O modules. |
| Operating Temperature | –40°C to +85°C - qualified for deployment inside enclosures near power inverters and motor controllers. |
Pinout & Package
SN65HVD3088EDR is supplied in an 8-pin SOIC (D) package measuring 4.9 mm × 6 mm, compatible with industry-standard SN75176 footprint and automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (R) | Receiver output | CMOS-compatible logic-level data output; high-impedance when RE = high. |
| 2 (RE) | Receiver enable (active low) | Assert low to enable receiver; high places R in high-Z - critical for multi-drop bus arbitration. |
| 3 (DE) | Driver enable (active high) | Assert high to enable driver; low disables A/B outputs - used for half-duplex direction control. |
| 4 (D) | Driver input | TTL/CMOS logic input driving the differential bus; referenced to local GND. |
| 5 (GND) | Ground reference | Local signal return; must be star-connected to avoid ground loops in distributed RS-485 systems. |
| 6 (A) | Bus differential output/input | Inverting bus terminal; pairs with B to form differential RS-485 signal (A = –, B = +). |
| 7 (B) | Bus differential output/input | Non-inverting bus terminal; polarity must match other nodes on same bus segment. |
| 8 (VCC) | Power supply | 4.5–5.5 V DC input; requires local 100 nF ceramic decoupling placed ≤3 mm from pin. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe receiver | Guarantees logic-high R output when bus is open, shorted, or idle - prevents spurious UART framing errors. |
| Thermal shutdown | Activates at 165°C junction temperature, forcing driver/receiver into high-Z state to prevent latch-up during overcurrent faults. |
| 1/8 unit load | Enables up to 256 transceivers on one RS-485 bus without signal degradation - reduces repeater count in large-scale building automation. |
| Glitch-free power sequencing | Power-on-reset circuit holds R, A, and B in high-Z until VCC stabilizes - avoids bus contention during system boot. |
| Controlled transition times | Rise/fall times of 7–15 ns (typ.) balance EMI suppression and 20 Mbps timing margin - no external slew-rate resistors needed. |
Applications
| Energy Meter Networks | Motor Control Systems |
|---|---|
Use Scenario: Bidirectional firmware updates and tariff data exchange across 100+ meters on a shared LV distribution line. IC Role / Device Role / Timing Role: Half-duplex RS-485 physical layer interface translating UART commands to differential bus signals with fail-safe idle-bus default. Use Value: 20 Mbps rate supports compressed firmware chunk transfers; ±15 kV ESD withstands induced surges from nearby switching loads. |
Use Scenario: Real-time position feedback and command transmission between PLC and servo drives in packaging machinery. IC Role / Device Role / Timing Role: Robust physical layer transceiver linking motion controller UART to distributed axis drives over 50 m twisted-pair cable. Use Value: 30 mV receiver hysteresis rejects PWM noise coupling; thermal shutdown protects against bus fault currents during motor stall events. |
| Industrial Automation Networks | Building Automation Networks |
Use Scenario: Sensor data aggregation from 32 remote I/O modules in a hazardous-area process control cabinet. IC Role / Device Role / Timing Role: Low-power RS-485 node transceiver enabling periodic sensor polling while maintaining <1 µA standby current during sleep cycles. Use Value: 1 nA shutdown current extends battery life in wireless gateway edge nodes; –40°C to +85°C rating suits unheated outdoor enclosures. |
Use Scenario: HVAC controller communication with zone dampers, thermostats, and lighting panels across multi-floor commercial buildings. IC Role / Device Role / Timing Role: Interoperable RS-485 PHY compliant with BACnet MS/TP physical layer requirements and SN75176 footprint. Use Value: 1/8 unit load allows full network scalability without repeaters; fail-safe behavior prevents false alarms during bus maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-485 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVD3085DR | Rated for 1 Mbps max signaling rate; identical SOIC-8 package and pinout; lower driver output voltage (1.5 V min into 54 Ω). | Suitable for slower legacy fieldbus segments (e.g., Modbus RTU at 115.2 kbps); not viable for 20 Mbps encoder feedback loops. | Select SN65HVD3085DR only if system timing budget permits >50 ns bit period; retains same PCB layout but sacrifices speed headroom. |
| THVD1550DR | 3.3-V supply only; 500 kbps max rate; ±16 kV ESD; integrated 3.3-V LDO; different pinout (no DE/RE separation). | Designed for direct MCU interfacing with 3.3-V I/O; lacks independent driver/receiver enable control required for strict half-duplex arbitration. | Choose THVD1550DR for space-constrained 3.3-V systems where integrated regulation is preferred; requires PCB redesign due to non-compatible pin mapping. |
Compared with SN65HVD3085DR and THVD1550DR, SN65HVD3088EDR uniquely delivers 20 Mbps performance in a drop-in SN75176-compatible SOIC-8 package with independent DE/RE control - making it the only option for high-speed deterministic industrial Ethernet coexistence or time-synchronized distributed I/O.
Availability
SN65HVD3088EDR is available at Aetrix Electronics and suitable for industrial automation, motor control, and energy metering applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN65HVD3088EDR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of RS-485 product leadership and industrial qualification rigor.
The SN65HVD308xE family was engineered specifically for noise-immune, high-node-count industrial data networks - emphasizing ESD resilience, fail-safe reliability, and thermal robustness in harsh electromagnetic environments.
FAQ
What is the maximum signaling rate supported by the SN65HVD3088EDR?
The SN65HVD3088EDR supports a maximum signaling rate of 20 Mbps, verified per TIA/EIA-485A under recommended operating conditions with 54 Ω differential load and 50 pF capacitance. This enables sub-100 ns bit periods required for high-resolution encoder feedback and fast PLC scan cycles. The SN65HVD3088EDR achieves this with 7–15 ns typical rise/fall times and <2 ns pulse skew.
Does the SN65HVD3088EDR include fail-safe receiver functionality?
Yes, the SN65HVD3088EDR integrates fail-safe receiver circuitry that guarantees a logic-high output on pin R when the A/B bus lines are open-circuited, shorted together, or left idle. This behavior is achieved via internal biasing and 30 mV hysteresis, preventing UART framing errors and ensuring deterministic startup in multi-drop RS-485 networks.
What is the shutdown current consumption of the SN65HVD3088EDR?
The SN65HVD3088EDR draws 0.001–2 µA in shutdown mode (DE = low, RE = high), measured across –40°C to +85°C. This ultra-low quiescent current enables use in battery-powered remote I/O nodes and energy-harvesting sensors where multi-year operation without maintenance is required.
Is the SN65HVD3088EDR pin-compatible with the SN75176?
Yes, the SN65HVD3088EDR in SOIC-8 (D) package uses the exact same pinout and footprint as the industry-standard SN75176, including identical assignments for R, RE, DE, D, GND, A, B, and VCC. This allows direct replacement without PCB modification, while adding 20 Mbps speed, ±15 kV ESD, and fail-safe operation.
What thermal protection does the SN65HVD3088EDR provide?
The SN65HVD3088EDR incorporates thermal shutdown that activates at approximately 165°C junction temperature. Upon triggering, the driver and receiver outputs enter high-impedance state to prevent damage during sustained bus faults or ambient overheating - a critical safeguard in enclosed motor control cabinets or unventilated energy meter housings.
SN65HVD3088EDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- RS422, RS485
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 30 mV
- Data Rate:
- 20Mbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SN65HVD3088EDR FAQ
1.How can I place an order for SN65HVD3088EDR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD3088EDR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN65HVD3088EDR reliable?
The price and inventory of SN65HVD3088EDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD3088EDR is usually 5 days.
3.What payment methods are accepted for SN65HVD3088EDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD3088EDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD3088EDR?
SN65HVD3088EDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD3088EDR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN65HVD3088EDR?
For technical support, including SN65HVD3088EDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD3088EDR requirements.
6.How does Aetrix verify that SN65HVD3088EDR is sourced from the original manufacturer or authorized distributors?
All SN65HVD3088EDR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN65HVD3088EDR meets industry standards.
7.What is the process for return or replacement of SN65HVD3088EDR?
All SN65HVD3088EDR units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD3088EDR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN65HVD3088EDR part is unused and in its original packaging.
Return procedure for SN65HVD3088EDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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