Encyclopedia Entry: 74ABT245CMSAX

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifting and Bus Transceiver
• Characteristics: High-speed, low-power consumption, bidirectional data transfer
• Package: Surface Mount Technology (SMT) package
• Essence: Transceiver IC for level shifting between different voltage domains
• Packaging/Quantity: Tape and Reel packaging, available in various quantities

Specifications

• Supply Voltage: 4.5V to 5.5V
• Logic Family: ABT
• Number of Channels: 8
• Input/Output Compatibility: TTL/CMOS
• Data Transfer Rate: Up to 400 Mbps
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74ABT245CMSAX IC has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Output control pin
2. DIR (Direction Control) - Direction control pin
3. A1-A8 (Channel A Inputs/Outputs) - Bidirectional data lines for Channel A
4. B1-B8 (Channel B Inputs/Outputs) - Bidirectional data lines for Channel B
5. GND (Ground) - Ground reference pin
6. VCC (Power Supply) - Positive power supply pin

Functional Features

• Bidirectional data transfer between two voltage domains
• Automatic direction control based on the DIR pin
• Output enable/disable control using the OE pin
• High-speed operation with minimal propagation delay
• Low power consumption for efficient energy usage
• Robust protection against electrostatic discharge (ESD)

Advantages and Disadvantages

Advantages

• Enables level shifting between different voltage domains
• Supports high-speed data transfer
• Low power consumption for energy-efficient applications
• Provides bidirectional communication capability
• Offers protection against ESD

Disadvantages

• Limited to 8 channels of data transfer
• Requires careful consideration of voltage compatibility between domains
• May not be suitable for applications requiring a higher number of channels

Working Principles

The 74ABT245CMSAX is designed to facilitate level shifting and bidirectional data transfer between two voltage domains. It operates based on the input provided through the DIR pin, which determines the direction of data flow. When the DIR pin is set to logic high, data is transferred from Channel A to Channel B, and vice versa when the DIR pin is set to logic low.

The OE pin controls the output enable/disable functionality. When the OE pin is set to logic high, the outputs are enabled, allowing data to be transmitted. Conversely, setting the OE pin to logic low disables the outputs, preventing data transmission.

The IC utilizes ABT logic family, which ensures high-speed operation with minimal propagation delay. It also incorporates protection mechanisms to safeguard against electrostatic discharge (ESD) events, enhancing its reliability.

Detailed Application Field Plans

The 74ABT245CMSAX finds application in various fields where level shifting and bidirectional data transfer are required. Some potential application areas include:

1. Microcontroller interfacing with different voltage peripherals
2. Communication systems involving multiple voltage domains
3. Data acquisition systems with mixed voltage sensors
4. Industrial automation and control systems
5. Automotive electronics for signal translation between different voltage levels

Detailed and Complete Alternative Models

1. SN74LVC245A: Low-Voltage CMOS Octal Bus Transceiver
2. CD74HCT245: High-Speed CMOS Logic Octal Bus Transceiver
3. MC74VHC245: High-Speed CMOS Octal Bus Transceiver

These alternative models offer similar functionality and can be considered as alternatives to the 74ABT245CMSAX, depending on specific requirements and compatibility with the application.

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