DS8921AM/NOPB

Product Overview

• Category: Integrated Circuit
• Use: Differential Line Driver and Receiver
• Characteristics: High-speed, low-power, differential signaling
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Provides a high-performance interface for transmitting and receiving data over long distances using differential signaling.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Rate: Up to 10 Mbps
• Propagation Delay: 20 ns typical
• Output Current: ±60 mA
• Input Hysteresis: 50 mV typical
• Common-Mode Rejection Ratio: 70 dB typical

Pin Configuration

The DS8921AM/NOPB has the following pin configuration:

1. VCC - Supply Voltage
2. GND - Ground
3. RO - Receiver Output
4. DE - Driver Enable
5. DI - Driver Input
6. RE - Receiver Enable
7. Y - Receiver Output
8. VEE - Negative Supply Voltage

Functional Features

• High-speed differential signaling for reliable data transmission.
• Low power consumption for energy-efficient operation.
• Built-in driver and receiver enable pins for easy control.
• Wide operating temperature range for versatile applications.
• High common-mode rejection ratio for noise immunity.

Advantages and Disadvantages

Advantages: - High-speed data transmission capability. - Low power consumption. - Easy control with enable pins. - Wide operating temperature range. - Excellent noise immunity.

Disadvantages: - Limited data rate compared to some other models. - Requires external negative supply voltage.

Working Principles

The DS8921AM/NOPB operates on the principle of differential signaling. It uses two complementary signals, DI and DE, to drive a balanced transmission line. The receiver section compares the differential voltage between RO and RE to detect the transmitted data. This differential signaling technique allows for high-speed data transmission over long distances while minimizing noise interference.

Detailed Application Field Plans

The DS8921AM/NOPB is commonly used in various applications that require reliable data transmission over long distances. Some of the typical application fields include:

1. Industrial Automation: Used in PLC (Programmable Logic Controller) systems for communication between control units and I/O modules.
2. Telecommunications: Employed in high-speed data communication equipment such as routers and switches.
3. Automotive Electronics: Integrated into automotive networks for transmitting sensor data and control signals.
4. Medical Devices: Utilized in medical equipment for transmitting vital signs and patient data.
5. Audio/Video Transmission: Used in professional audio and video equipment for high-quality signal transmission.

Detailed Alternative Models

1. SN65LVDS31: Differential Line Driver and Receiver with higher data rate capability.
2. MAX485: RS-485/RS-422 Transceiver with lower power consumption.
3. LTC2862: Low-power Differential Line Transceiver with extended temperature range.

These alternative models offer similar functionality to the DS8921AM/NOPB and can be considered based on specific requirements.

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