SN75173DR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Line Driver or Receiver
• Characteristics: High-speed, Low-power, Differential Bus Transceiver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Provides a bidirectional interface between TTL logic signals and differential bus lines
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Data Rate: Up to 10 Mbps
• Number of Channels: 1
• Input/Output Type: Differential
• Output Current: ±20 mA
• Propagation Delay Time: 30 ns (typical)

Detailed Pin Configuration

The SN75173DR IC has a total of 8 pins:

1. GND: Ground reference for all logic and input/output signals.
2. VCC: Positive supply voltage terminal.
3. RO: Receiver output pin.
4. RE: Receiver enable input pin.
5. DE: Driver enable input pin.
6. DI: Driver input pin.
7. D: Noninverting driver output pin.
8. /D: Inverting driver output pin.

Functional Features

• Bidirectional data transfer between TTL logic levels and differential bus lines.
• Built-in receiver hysteresis for improved noise immunity.
• Driver output slew rate control for reduced electromagnetic interference (EMI).
• Receiver input threshold control for better compatibility with different logic families.
• Receiver output meets the EIA/TIA-422-B and ITU-T V.11 standards.

Advantages and Disadvantages

Advantages: - High-speed data transmission capability. - Low power consumption. - Improved noise immunity. - Compatibility with various logic families. - Meets industry standards.

Disadvantages: - Limited to a single channel. - Requires external components for complete functionality.

Working Principles

The SN75173DR is designed to provide a bidirectional interface between TTL logic signals and differential bus lines. It uses differential signaling to transmit data, which improves noise immunity and allows for longer transmission distances. The driver section amplifies the TTL input signal and converts it into a differential output signal, while the receiver section converts the differential input signal back into a TTL logic level.

Detailed Application Field Plans

The SN75173DR is commonly used in various applications, including:

1. Industrial Automation: Used for communication between PLCs (Programmable Logic Controllers) and sensors/actuators.
2. Data Communication: Enables reliable data transfer in RS-485 networks.
3. Automotive Electronics: Facilitates communication between different electronic control units (ECUs).
4. Telecommunications: Provides a reliable interface for transmitting data over long distances.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the SN75173DR are:

1. MAX485: Similar functionality with additional features like fail-safe biasing.
2. LTC2850: Low-power, high-speed RS-485 transceiver with integrated protection features.
3. ADM2483: Isolated RS-485 transceiver with integrated DC-to-DC converter.

These alternative models offer similar functionality and can be chosen based on specific requirements and design constraints.

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