DS8921AN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Differential Line Driver and Receiver
• Characteristics:
  • High-speed data transmission
  • Low power consumption
  • Wide operating voltage range
  • Robust ESD protection
• Package: DIP-8 (Dual In-line Package, 8 pins)
• Essence: DS8921AN is a versatile IC used for differential line driving and receiving applications.
• Packaging/Quantity: Available in tubes of 25 units or reels of 1000 units.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Rate: Up to 10 Mbps
• Input Common Mode Voltage Range: -7V to +12V
• Output Voltage Swing: ±3.5V
• Propagation Delay: 20 ns (typical)

Detailed Pin Configuration

The DS8921AN IC has the following pin configuration:

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

Functional Features

• Differential Line Driving: The DS8921AN can drive differential signals on twisted-pair cables, enabling reliable long-distance data transmission.
• Differential Line Receiving: It can receive differential signals and convert them into single-ended logic levels for further processing.
• High-Speed Operation: With a maximum data rate of 10 Mbps, it is suitable for various high-speed communication protocols.
• ESD Protection: The IC incorporates robust electrostatic discharge (ESD) protection, ensuring its reliability in harsh environments.
• Low Power Consumption: Designed for power-sensitive applications, the DS8921AN consumes minimal power during operation.

Advantages and Disadvantages

Advantages: - High-speed data transmission capability - Wide operating voltage range - Robust ESD protection - Low power consumption

Disadvantages: - Limited pin configuration options - Relatively high propagation delay compared to some alternative models

Working Principles

The DS8921AN operates based on differential signaling principles. It uses complementary signals (A and B) to transmit data over a twisted-pair cable. The receiver (Y) detects the voltage difference between A and B, allowing reliable data recovery.

Detailed Application Field Plans

The DS8921AN finds applications in various fields, including:

1. Industrial Automation: Used for communication between sensors, actuators, and control systems in industrial automation processes.
2. Telecommunications: Enables high-speed data transmission in telecommunications networks, such as T1/E1 lines.
3. Automotive Electronics: Utilized in automotive systems for reliable communication between different electronic modules.
4. Medical Equipment: Facilitates data exchange between medical devices, ensuring accurate and timely information transfer.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to DS8921AN are:

1. SN75176 - Differential Bus Transceiver
2. MAX485 - RS-485/RS-422 Transceiver
3. LTC2862 - Low Power RS-485 Transceiver
4. ADM2483 - Isolated RS-485 Transceiver

These models offer similar functionality and can be used as substitutes depending on specific requirements.

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