SN65ELT21DR

Product Overview

Category: Integrated Circuit (IC)
Use: Signal Transmission
Characteristics: High-speed, Low-power
Package: SOIC (Small Outline Integrated Circuit)
Essence: Differential Line Driver and Receiver
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Supply Voltage Range: 3 V to 3.6 V
Operating Temperature Range: -40°C to +85°C
Data Rate: Up to 2.5 Gbps
Number of Channels: 1
Input Type: Differential
Output Type: Differential
Input Voltage Range: ±1 V
Output Voltage Range: ±1.4 V

Detailed Pin Configuration

The SN65ELT21DR has a total of 8 pins:

VCC: Power supply voltage input
GND: Ground reference
INP: Positive differential input
INN: Negative differential input
VREF: Reference voltage for input termination
OUTN: Negative differential output
OUTP: Positive differential output
NC: No connection

Functional Features

High-speed signal transmission up to 2.5 Gbps
Low power consumption
Differential signaling for noise immunity
Built-in input termination for impedance matching
Wide operating temperature range

Advantages and Disadvantages

Advantages: - High data rate capability - Low power consumption - Noise immunity due to differential signaling - Compact SOIC package for easy integration

Disadvantages: - Limited to single-channel operation - Requires external reference voltage for input termination

Working Principles

The SN65ELT21DR is a differential line driver and receiver IC designed for high-speed signal transmission. It operates on a supply voltage range of 3 V to 3.6 V and supports data rates up to 2.5 Gbps. The device uses differential signaling, where the input signal is transmitted as the voltage difference between two pins (INP and INN), providing noise immunity and reducing electromagnetic interference.

The IC incorporates built-in input termination (VREF) for impedance matching, ensuring optimal signal integrity. It also features a wide operating temperature range (-40°C to +85°C) and low power consumption, making it suitable for various applications.

Detailed Application Field Plans

The SN65ELT21DR is commonly used in the following applications:

High-speed data communication systems
Fiber optic transceivers
Ethernet switches and routers
Industrial automation equipment
Test and measurement instruments

Detailed and Complete Alternative Models

SN65ELT20DR: Similar specifications, but with dual-channel operation
SN65ELT22DR: Higher data rate capability (up to 3.125 Gbps)
SN65ELT23DR: Lower power consumption, suitable for battery-powered devices

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN65ELT21DR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN65ELT21DR in technical solutions:

Q: What is SN65ELT21DR? A: SN65ELT21DR is a high-speed differential line driver/receiver IC commonly used in applications requiring long-distance data transmission.
Q: What is the operating voltage range of SN65ELT21DR? A: SN65ELT21DR operates within a voltage range of 3V to 5.5V.
Q: What is the maximum data rate supported by SN65ELT21DR? A: SN65ELT21DR supports data rates up to 2.5 Gbps, making it suitable for high-speed communication applications.
Q: Can SN65ELT21DR be used for both single-ended and differential signaling? A: No, SN65ELT21DR is specifically designed for differential signaling applications and does not support single-ended signaling.
Q: What is the typical output voltage swing of SN65ELT21DR? A: The typical output voltage swing of SN65ELT21DR is around 400 mV, which can be adjusted using external resistors.
Q: Does SN65ELT21DR have built-in termination resistors? A: No, SN65ELT21DR does not have built-in termination resistors. External termination resistors are required for proper signal integrity.
Q: Can SN65ELT21DR be used in industrial temperature environments? A: Yes, SN65ELT21DR is rated for industrial temperature range (-40°C to +85°C) and can operate reliably in such environments.
Q: What is the power supply current consumption of SN65ELT21DR? A: The power supply current consumption of SN65ELT21DR is typically around 10 mA, but it can vary depending on the operating conditions.
Q: Can SN65ELT21DR be used in point-to-point communication systems? A: Yes, SN65ELT21DR is commonly used in point-to-point communication systems, such as Ethernet, USB, and HDMI interfaces.
Q: Are there any application notes or reference designs available for SN65ELT21DR? A: Yes, Texas Instruments provides application notes and reference designs that can help users understand and implement SN65ELT21DR in their technical solutions.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios. It's always recommended to refer to the datasheet and relevant documentation provided by the manufacturer for accurate information.