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Texas Instruments DS75176BM
- Part No.:
- DS75176BM
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS75176BM.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,420
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Product details
Overview
DS75176BM from Texas Instruments is a half-duplex RS-485/RS-422 transceiver IC with TRI-STATE driver/receiver outputs, −7V to +12V bus common-mode range, 22 ns driver propagation delay, and thermal shutdown protection. It operates from a single +5V supply and supports up to 32 nodes on a multipoint bus in industrial automation and building control systems.
For engineers reviewing the DS75176BM datasheet, DS75176BM pinout, DS75176BM application, or DS75176BM equivalent, key selection criteria include bus fault tolerance, TRI-STATE bus contention handling, guaranteed operation across 0°C to +70°C, and SOIC-8 package compatibility with legacy RS-485 designs.
Technical Context
The DS75176BM integrates a differential driver and receiver in a single SOIC-8 package, supporting half-duplex communication over long-distance twisted-pair lines. Its driver features thermal shutdown and high-impedance disable, while the receiver includes 70 mV hysteresis and ±7V ground difference tolerance.
It meets EIA RS-485 electrical specifications for unit load (≤1 UL), enabling up to 32 transceivers per bus segment. The device is pin-compatible with SN75176A/B and DS3695/A, and its logic-level control inputs (DE, RE) interface directly with UARTs or microcontrollers without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75 V to 5.25 V - Ensures stable operation with standard 5V logic rails and tolerates typical power rail ripple. |
| Bus Common-Mode Range | −7 V to +12 V - Supports inter-device ground potential differences up to ±7 V in noisy industrial environments. |
| Driver Propagation Delay | 22 ns typical - Enables reliable data transmission at up to 25 Mbps under loaded conditions (27 Ω load). |
| Receiver Input Hysteresis | 70 mV typical - Improves noise immunity on long cables by preventing false toggling near threshold voltage. |
| Unit Load Compliance | <1 RS-485 unit load - Allows connection of up to 32 DS75176BM devices on a single bus segment. |
| Thermal Shutdown | Integrated circuit protection - Forces driver into high-impedance state during bus contention or short-circuit faults. |
| TRI-STATE Control | Independent DE and RE pins - Enables precise timing control of driver enable and receiver enable for half-duplex flow. |
Pinout & Package
DS75176BM is housed in an 8-pin SOIC (Package Drawing D) with 1.27 mm pitch, surface-mount footprint, and RoHS-compliant CU-SN finish. The package supports reflow soldering per JEDEC Level-1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DI) | Driver Input | CMOS/TTL-compatible digital input controlling driver output polarity; accepts 0.8 V low / 2.0 V high thresholds. |
| 2 (DE) | Driver Enable | Active-high control: enables driver output when high; places DO in high-impedance when low. |
| 3 (RO) | Receiver Output | CMOS/TTL-compatible digital output reflecting differential bus state; sinks 16 mA minimum at VOL ≤ 0.5 V. |
| 4 (RE) | Receiver Enable | Active-low control: enables receiver when low; places RO in high-impedance when high. |
| 5 (GND) | Ground Reference | Signal return path for internal circuitry and I/O; must be connected to system ground plane. |
| 6 (A) | Differential Bus Non-Inverting | Connects to bus line A (typically marked "+"); forms differential pair with B for noise-rejecting reception/transmission. |
| 7 (B) | Differential Bus Inverting | Connects to bus line B (typically marked "−"); referenced against A to determine bus logic state. |
| 8 (VCC) | Positive Supply | +5 V power input; bypass capacitor (0.1 µF) required between VCC and GND near the pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| RS-485/RS-422 Dual Standard Compliance | Meets EIA-485 electrical requirements and RS-422 drive capability, enabling interoperability across both bus architectures. |
| Extended Common-Mode Tolerance | Operates reliably with −7 V to +12 V common-mode voltage on bus lines, eliminating need for isolated signal conditioning in multi-node installations. |
| Fail-Safe Receiver Design | Outputs logic high when bus is open, shorted, or idle - prevents undefined states and ensures deterministic UART framing. |
| Thermal Fault Protection | Automatically disables driver output during overtemperature events caused by bus shorts or contention, preserving device integrity. |
| Low-Power Standby Mode | Draws only 35 mA supply current with driver disabled and receiver enabled - reduces system power in listen-only modes. |
Applications
| Industrial PLC Networks | Building Automation Systems |
|---|---|
|
Use Scenario: Multi-drop serial communication between programmable logic controllers, I/O modules, and HMIs over 1200 m twisted-pair cabling in factory floors. IC Role / Device Role / Timing Role: Half-duplex RS-485 transceiver providing robust differential signaling and bus contention management. Use Value: −7V to +12V common-mode range accommodates ground shifts across distributed cabinets; thermal shutdown prevents latch-up during field wiring faults. |
Use Scenario: Centralized HVAC control network linking thermostats, actuators, and energy meters across commercial buildings using daisy-chained RS-485. IC Role / Device Role / Timing Role: Bus interface IC translating UART signals to differential RS-485 for noise-immune long-haul transmission. Use Value: 70 mV receiver hysteresis rejects EMI from lighting ballasts and motor drives; TRI-STATE control enables clean bus arbitration in master-slave topologies. |
| Point-of-Sale Terminal Clusters | Remote Sensor Data Aggregation |
|
Use Scenario: Interconnecting cash registers, barcode scanners, and receipt printers via shared RS-485 backbone in retail environments. IC Role / Device Role / Timing Role: Half-duplex transceiver managing bidirectional data exchange under host-controlled timing windows. Use Value: Pin compatibility with SN75176A allows drop-in replacement in legacy POS hardware; 22 ns propagation delay supports 10 Mbps polling rates. |
Use Scenario: Collecting analog sensor readings (temperature, humidity, pressure) from geographically dispersed nodes in environmental monitoring networks. IC Role / Device Role / Timing Role: Low-power RS-485 interface enabling battery-operated or energy-harvested remote nodes to join wired backhaul. Use Value: High-impedance receiver disable (RE = high) reduces quiescent current to <100 µA; bus-compatible unit load allows scalable node expansion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-485 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVD72 | Higher ESD rating (16 kV HBM), wider operating temperature (−40°C to +125°C), integrated slew-rate control for reduced EMI. | Preferred for automotive or extended-temperature industrial deployments where EMC robustness is critical. | Select SN65HVD72 when upgrading for enhanced ESD immunity and broader thermal margin; not pin-compatible - requires layout revision. |
| MAX13487E | True fail-safe receiver (open-circuit = logic high), ±35 kV ESD protection, auto-direction control (no separate DE pin). | Suitable for space-constrained designs needing simplified control logic and higher fault resilience. | Choose MAX13487E for automatic direction sensing and superior ESD performance; differs in pinout and control architecture - not drop-in. |
Compared with SN65HVD72 and MAX13487E, the DS75176BM offers proven reliability in cost-sensitive industrial RS-485 networks with legacy pin compatibility, while trading off modern ESD ratings and auto-direction features for lower BOM cost and design familiarity.
Availability
DS75176BM is available at Aetrix Electronics and suitable for industrial PLC networks, building automation systems, point-of-sale terminal clusters, and remote sensor data aggregation requiring stable component supply and long-term sourcing continuity.
Supply support for DS75176BM 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 delivering analog, embedded processing, and connectivity solutions with emphasis on industrial, automotive, and communications markets.
The DS75176BM belongs to TI's legacy RS-485 transceiver portfolio, designed specifically for cost-effective, robust multipoint data communication in factory automation and infrastructure control systems.
FAQ
What is the operating temperature range for the DS75176BM?
The DS75176BM is specified for operation from 0°C to +70°C ambient temperature. This range is confirmed in the Recommended Operating Conditions table of the official TI datasheet (SNLS381C), and applies to all electrical characteristics unless otherwise noted. The DS75176BM is distinct from the DS75176BT variant, which supports −40°C to +85°C. DS75176BM remains fully functional within its rated range under 4.75 V to 5.25 V supply voltage.
Does the DS75176BM support full-duplex communication?
No, the DS75176BM is a half-duplex RS-485 transceiver. It uses a single differential bus pair (A and B) shared between driver and receiver, with separate DE (driver enable) and RE (receiver enable) control pins to manage direction. Full-duplex operation would require independent transmit and receive pairs, as implemented in four-wire RS-422 devices - a capability not supported by the DS75176BM pinout or internal architecture.
What protection features does the DS75176BM include against bus faults?
The DS75176BM includes thermal shutdown protection that disables the driver outputs when excessive power dissipation occurs due to bus contention or short circuits. It also supports high-impedance TRI-STATE operation for both driver and receiver, allowing safe bus disconnection during power-down or fault conditions. However, it does not integrate transient voltage suppression (TVS) or ESD clamps beyond its rated 500 V HBM - external protection components are recommended for harsh industrial environments.
Is the DS75176BM pin-compatible with older RS-485 transceivers?
Yes, the DS75176BM is explicitly pin-compatible with SN75176A/B and DS3695/A, as stated in the TI datasheet Feature list. All share identical SOIC-8 pin assignments for DI, DE, RO, RE, GND, A, B, and VCC. This enables direct replacement in existing PCB layouts without modification, preserving signal routing and decoupling design while upgrading to improved common-mode range and thermal protection.
How many DS75176BM transceivers can be connected to a single RS-485 bus?
Up to 32 DS75176BM transceivers can be connected to a single RS-485 bus segment. This is possible because each DS75176BM presents less than one RS-485 unit load (UL) - specifically, its combined driver output and receiver input impedance is <12 kΩ, meeting the RS-485 standard's requirement for ≤32 UL per bus. No additional bus repeaters or terminators are required solely for node count scaling.
DS75176BM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Transceiver
- Protocol:
- RS422, RS485
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 70 mV
- Data Rate:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DS75176BM FAQ
1.How can I place an order for DS75176BM through Aetrix?
Please submit a Request for Quotation (RFQ) for DS75176BM 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 DS75176BM reliable?
The price and inventory of DS75176BM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS75176BM is usually 5 days.
3.What payment methods are accepted for DS75176BM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS75176BM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS75176BM?
DS75176BM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS75176BM 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 DS75176BM?
For technical support, including DS75176BM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS75176BM requirements.
6.How does Aetrix verify that DS75176BM is sourced from the original manufacturer or authorized distributors?
All DS75176BM 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 DS75176BM meets industry standards.
7.What is the process for return or replacement of DS75176BM?
All DS75176BM units undergo pre-shipment inspection (PSI). If there is an issue with DS75176BM, 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 DS75176BM part is unused and in its original packaging.
Return procedure for DS75176BM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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