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SN75176BP

RS-485/RS-422 differential bus transceiver, 10Mbps, DIP-8, driver + receiver with enables

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Manufacturer Part：

SN75176BP

Package：

DIP-8 (9.6 x 7.9 x 5.3mm)

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Description

Product Overview

The SN75176BP is a differential bus transceiver from Texas Instruments in DIP-8 package, implementing the RS-485 and RS-422 communication standards. It combines a tri-state differential line driver and a differential line receiver, both active simultaneously for full-duplex or half-duplex operation. The device features ±200mV receiver sensitivity, 60mA driver output current, and thermal shutdown protection, supporting data rates up to 10Mbps.

Key Specifications

Standard RS-485 / RS-422
Data Rate Up to 10Mbps
Driver Output Current 60mA
Receiver Sensitivity ±200mV
Common-Mode Range -7V to +12V
Bus Pins ESD ±15kV HBM
Supply Voltage 5V (4.75-5.25V)
Supply Current 50mA max (driver active)
Package DIP-8 (9.6 x 7.9mm)
Operating Temperature 0°C to +70°C

Features

  • Combined driver and receiver for bidirectional RS-485 communication
  • ±200mV receiver sensitivity for noise-immune data reception
  • -7V to +12V common-mode range for industrial environments
  • Thermal shutdown protection at 150°C
  • Driver and receiver enable pins for flexible bus control
  • Up to 32 nodes on a single bus

Applications

  • Industrial RS-485 communication networks (Modbus, PROFIBUS)
  • HVAC and building automation systems
  • Motor drive communication interfaces
  • Point-of-sale terminal networks
  • Laboratory and test equipment remote control

The SN75176BP is an RS-485/RS-422 differential bus transceiver from Texas Instruments in DIP-8, combining a tri-state differential driver and differential receiver on a single chip. The driver converts single-ended TTL/CMOS data into differential signals (A and B) suitable for transmission over twisted-pair cable up to 1200 meters (4000 feet). The receiver converts the differential signal back to single-ended TTL/CMOS with ±200mV sensitivity, providing excellent noise immunity in industrial environments. The driver and receiver can be active simultaneously for full-duplex 4-wire RS-422, or the DE (Driver Enable) and RE# (Receiver Enable) pins can be used for half-duplex 2-wire RS-485. The device supports up to 32 nodes on a single bus (one unit load per device). The common-mode range of -7V to +12V allows operation in the presence of ground potential differences between nodes. The thermal shutdown at 150°C protects against line contention faults. The -BP suffix specifies DIP-8, commercial temperature (0°C to +70°C). The SN75176 is one of the most widely used RS-485 transceivers in the industry, with second-source availability from multiple manufacturers.

The SN75176BP contains two independent functional blocks: a differential driver and a differential receiver, each with its own enable control. The driver: When DE (Driver Enable) is HIGH, the driver is active. The DI (Driver Input) signal controls the differential output: DI=HIGH drives A HIGH and B LOW (logic 1); DI=LOW drives A LOW and B HIGH (logic 0). The driver output current is 60mA into a 54-ohm load (27 ohms each side to a 5V termination), producing a differential voltage of at least 1.5V. When DE is LOW, the driver outputs are high-impedance (tri-state), allowing other nodes to transmit. The receiver: When RE# (Receiver Enable) is LOW, the receiver is active. It compares the voltage difference between A and B: if (A-B) > 200mV, RO (Receiver Output) = HIGH; if (A-B) < -200mV, RO = LOW; if |A-B| 200mV differential, preventing false start bits.

Pin Name Type Function
1 RO Output Receiver output (HIGH when A-B > 200mV, LOW when A-B < -200mV, Hi-Z when RE#=HIGH)
2 RE# Input Receiver enable (active LOW, LOW=receive, HIGH=RO high-impedance)
3 DE Input Driver enable (active HIGH, HIGH=transmit, LOW=driver high-impedance)
4 DI Input Driver input (TTL/CMOS, HIGH=A-HIGH/B-LOW, LOW=A-LOW/B-HIGH)
5 GND Power Ground
6 A I/O Bus side A (non-inverting, connects to twisted-pair via termination)
7 B I/O Bus side B (inverting, connects to twisted-pair via termination)
8 VCC Power Supply (5V, connect with 0.1uF ceramic bypass)
  • Modbus RTU network: Half-duplex RS-485 connects up to 32 PLCs and I/O modules over 1200m twisted-pair; DE/RE# controlled by UART RTS signal for auto-direction switching
  • HVAC building automation: Multiple temperature/humidity sensors communicate to central controller; -7V to +12V common-mode range tolerates ground differences between floors
  • Motor drive communication: Inverter receives speed/torque commands via RS-485 from PLC; 10Mbps data rate supports real-time command updates
  • Point-of-sale terminal: Cash registers networked to central server over long cable runs; ±200mV sensitivity ensures reliable data in noisy retail environments
Manufacturer Part Number Package Notes
Texas Instruments SN75176BDR SOIC-8 Same device in SOIC-8 SMD package
Texas Instruments SP3485EN-L/TR SOP-8 3.3V RS-485, low power, TI/Sipex brand
Analog Devices ADM485ARZ-REEL7 SOIC-8 5V RS-485, 5Mbps, ADI brand
Maxim MAX485CPA+ DIP-8 5V RS-485, 2.5Mbps, Maxim brand
STMicroelectronics ST485ABDR SOIC-8 5V RS-485, 10Mbps, ST brand
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • Automotive Electronics: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
  • Medical Devices: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

Contact Us

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
  1. Accepted Payment Methods
  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
  • PayPal: Ideal for small orders, sample orders and quick payments.

  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

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    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

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We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
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  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
  1. Order Processing Time
  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
  • Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
  1. Estimated Transit Time
  • International Express: 3 – 7 working days globally
  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
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  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
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    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

4. Customs & Liability Statement

  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

  2. Handling of Lost or Damaged Goods
  • In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
  • We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.

5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
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2. Classified Professional Packaging

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  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
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  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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