SN75172N

Product Overview

• Category: Integrated Circuit
• Use: Signal Line Driver and Receiver
• Characteristics: High-speed, Low-power, TTL-Compatible
• Package: DIP (Dual In-line Package)
• Essence: Transceiver IC for RS-485 Communication
• Packaging/Quantity: Tube/25 pieces

Specifications

• Supply Voltage: 4.75V to 5.25V
• Data Rate: Up to 10 Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Channels: 1
• Input Logic Levels: TTL-Compatible
• Output Logic Levels: RS-485 Differential
• Package Type: PDIP-8

Detailed Pin Configuration

The SN75172N has a total of 8 pins arranged as follows:

___________ | | 1 | VCC | 8 2 | B | 7 3 | A | 6 4 | Y | 5 |___________|

1. VCC: Power supply voltage input
2. B: Non-inverting data input
3. A: Inverting data input
4. Y: Differential output

Functional Features

• High-speed data transmission up to 10 Mbps
• Low power consumption
• TTL-compatible inputs for easy interfacing with microcontrollers
• RS-485 differential output for noise immunity
• Built-in fail-safe circuitry for open-circuit conditions

Advantages and Disadvantages

Advantages: - High-speed communication capability - Low power consumption - Easy integration with microcontrollers - Noise immunity due to differential signaling - Fail-safe circuitry ensures reliable operation

Disadvantages: - Limited to single-channel communication - Requires external components for complete RS-485 implementation

Working Principles

The SN75172N is a transceiver IC designed for RS-485 communication. It operates by receiving TTL-compatible input signals and converting them into differential RS-485 output signals. The differential signaling provides noise immunity, making it suitable for long-distance communication. The IC also includes fail-safe circuitry to ensure proper operation even in the presence of open-circuit conditions.

Detailed Application Field Plans

The SN75172N is commonly used in various applications that require reliable and high-speed communication over long distances. Some of the typical application fields include:

1. Industrial Automation: Used for connecting sensors, actuators, and control devices in industrial automation systems.
2. Building Automation: Enables communication between different building management systems, such as HVAC, lighting, and security systems.
3. Instrumentation: Facilitates data transmission between measurement instruments and control units in scientific and engineering applications.
4. Automotive Electronics: Used in automotive systems for communication between different electronic modules, such as engine control units and dashboard displays.
5. Telecommunications: Enables reliable data transmission in telecommunication networks, including wired and wireless infrastructure.

Detailed and Complete Alternative Models

1. MAX485: Similar functionality with enhanced ESD protection features.
2. LTC485: Low-power RS-485 transceiver with wide supply voltage range.
3. ADM485: Full-duplex RS-485 transceiver with integrated line termination resistors.
4. SP3485: Half-duplex RS-485 transceiver with low power consumption.
5. SN65HVD485: Robust RS-485 transceiver with extended temperature range.

These alternative models offer similar functionality to the SN75172N and can be considered based on specific requirements and preferences.

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