SN75HVD12DR

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This transceiver is capable of data transmission at speeds up to 1Mbps

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SN75HVD12DR DataSheet

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SN75HVD12DR Details

The SN75HVD12DR is a low-power RS-485 transceiver from Texas Instruments, designed for reliable communication in industrial and automotive applications. This transceiver features a wide supply voltage range, low quiescent current, and enhanced ESD protection, making it suitable for harsh operating environments. It is available in a small and durable package, enabling space-efficient circuit designs.

Pinout

  • 1 (RE): Receiver Output Enable
  • 2 (DE): Driver Output Enable
  • 3 (B): Receive Data Input/Output B
  • 4 (A): Receive Data Input/Output A
  • 5 (GND): Ground
  • 6 (VCC): Positive Power Supply
  • 7 (YC): Enhanced ESD Signal GND
  • 8 (Z): Enhanced ESD Signal VCC

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

  • Wide Supply Voltage Range: Operates from 3.3V to 5V, compatible with various system voltages.
  • Low Quiescent Current: Designed for low power consumption in standby mode.
  • Enhanced ESD Protection: Offers robust ESD protection for reliable operation in harsh environments.
  • Industrial Grade: Suitable for industrial automation and control systems.
  • Automotive Qualified: Meets automotive industry standards for reliable communication in vehicles.

Application

  • Industrial Automation: Ideal for industrial communication networks and control systems.
  • Automotive Communication: Suitable for in-vehicle communication networks where reliability is crucial.
  • Building Management Systems: Used in building automation systems for data transmission and control.

Where to Use

The SN75HVD12DR is recommended for applications requiring reliable RS-485 communication in industrial and automotive environments. It is particularly suitable for systems where low power consumption and enhanced ESD protection are essential for continuous and robust operation.

How to Use

Connect the SN75HVD12DR to your RS-485 network by wiring the A and B pins to the respective lines. Ensure proper connection of VCC and GND for power supply. Use RE and DE pins to control the direction of data flow. For more detailed usage instructions, consult the datasheet.

Application Circuit

The application circuit diagram for the SN75HVD12DR illustrates the connections required for integrating the transceiver into an RS-485 network. It includes power connections, data lines, and control pins for proper functionality and communication.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

  • SN65HVD11DR: A comparable RS-485 transceiver offering similar features and performance.
  • MAX3485ESA: An alternative transceiver with equivalent functionality and specifications.

Complementary

The SN75HVD12DR can be complemented by the SN65HVD10DR, which provides additional features such as higher data rates and extended temperature range, suitable for more demanding communication systems.

Ensure compatibility and alignment of features when selecting complementary transceivers for specific application requirements.

Frequently Asked Questions

Q: What is the operating voltage range of the SN75HVD12DR?

A: The SN75HVD12DR operates within a voltage range of 3.3V to 5V. Refer to the datasheet for detailed voltage specifications and tolerances.

Q: Is the SN75HVD12DR suitable for automotive use?

A: Yes, the SN75HVD12DR is automotive qualified and designed for reliable communication in vehicle systems, providing enhanced ESD protection for robust operation.

SN75HVD12DR

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! RS-485 Interface IC RoHS Details
Mounting Style SMD/SMT Package / Case SOIC-8
Series SN75HVD12 Function Transceiver
Data Rate ! 1 Mb/s Number of Drivers 1 Driver
Number of Receivers 1 Receiver Duplex Half Duplex
Supply Voltage - Max 3.6 V Supply Voltage - Min 3 V
Operating Supply Current 15.5 mA Minimum Operating Temperature 0 C
Maximum Operating Temperature ! + 70 C ESD Protection 16 kV
Brand Texas Instruments Operating Supply Voltage ! 3.3 V
Product RS-485 Transceivers Product Type ! RS-485 Interface IC
Shutdown Shutdown Factory Pack Quantity 2500
Subcategory Interface ICs Unit Weight 0.002561 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification SN75HVD12DR PDF Download

FAQs

What is SN75HVD12DR?

The SN75HVD12DR is a low-power, half-duplex, RS-485 transceiver designed by Texas Instruments. It is ideal for applications requiring robust communication over long cable lengths, such as industrial automation, HVAC control systems, and remote sensor networks.

How Does SN75HVD12DR Work?

The SN75HVD12DR works by converting and transmitting digital signals over twisted-pair cables in a half-duplex fashion. It provides differential communication, allowing for high noise immunity and extended reach. The transceiver features thermal shutdown and slew rate control, enhancing system reliability and signal integrity.

How Many Pins does SN75HVD12DR have and What are the Functions of the Pinout Configuration?

The SN75HVD12DR is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

  • DE, RE: Driver output enable and receiver output enable pins.
  • A, B: Non-inverting and inverting driver input pins, respectively.
  • GND: Ground pin.
  • Vcc: Power supply pin.
  • RxD, TxD: Receiver and transmitter data pins.

What are the Pros and Cons of SN75HVD12DR?

Pros:

  • Robust Communication: Designed for reliable data transmission over long cable distances.
  • Low Power Consumption: Operates with low power, suitable for battery-powered systems.
  • Thermal Shutdown: Features built-in thermal shutdown for overtemperature protection.
  • Slew Rate Control: Allows adjustment of the output slew rate for optimized performance.
  • Compact Package: The 8-pin SOIC package offers space-efficient integration into designs.

Cons:

  • Half-Duplex Communication: Supports only one-way communication at a time, which may not be suitable for all applications.
  • External Components: May require external termination resistors for proper signal integrity on the communication lines.
  • Noisy Environments: While RS-485 provides noise immunity, extremely noisy environments may still pose challenges.

Are There Any Equivalents/Alternatives to SN75HVD12DR for Recommendation?

  • The MAX485 from Maxim Integrated is an equivalent RS-485 transceiver suitable for similar applications.
  • Alternatives to the SN75HVD12DR include the LT1785 from Analog Devices and the ST485 from STMicroelectronics.

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