M74HCT245B1R

Product Overview

Category

M74HCT245B1R belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for signal level shifting and voltage translation in digital systems.

Characteristics

• High-speed operation
• Wide operating voltage range
• Low power consumption
• Schmitt trigger inputs for noise immunity
• 3-state outputs for bus-oriented applications

Package

M74HCT245B1R is available in a standard 20-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of M74HCT245B1R lies in its ability to provide bidirectional voltage level shifting between two different logic levels, making it suitable for interfacing between devices operating at different voltage levels.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Logic Family: HCT
• Number of Channels: 8
• Input/Output Type: Tri-State
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 14 ns (max)
• Output Current: ±6 mA (max)

Detailed Pin Configuration

The pin configuration of M74HCT245B1R is as follows:

__ __ A1 |1 U 20| Vcc A2 |2 19| B1 A3 |3 18| B2 A4 |4 17| B3 A5 |5 16| B4 A6 |6 15| B5 A7 |7 14| B6 A8 |8 13| B7 GND |9 12| B8 OE1 |10 11| OE2 ¯¯ ¯¯

Functional Features

• Bidirectional voltage level shifting
• Non-inverting logic translation
• Tri-state outputs for bus-oriented applications
• Schmitt trigger inputs for noise immunity
• High-speed operation

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems
• Low power consumption helps in reducing overall energy consumption
• Schmitt trigger inputs provide improved noise immunity
• Tri-state outputs enable efficient bus sharing

Disadvantages

• Propagation delay time may limit the maximum achievable data transfer rate
• Limited output current may restrict its use in certain high-current applications

Working Principles

M74HCT245B1R operates by receiving input signals from one logic level and translating them to another logic level. It utilizes a combination of transistors, resistors, and other electronic components to achieve this voltage level shifting functionality.

Detailed Application Field Plans

M74HCT245B1R finds extensive application in various digital systems, including but not limited to: - Microcontrollers - Data communication interfaces - Memory modules - Industrial automation systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to M74HCT245B1R are: - SN74HCT245N by Texas Instruments - CD74HCT245E by Texas Instruments - MC74HCT245ADWR2G by ON Semiconductor - 74HCT245D by NXP Semiconductors

These alternatives can be considered based on specific requirements, availability, and cost considerations.

In conclusion, M74HCT245B1R is a versatile integrated circuit that provides bidirectional voltage level shifting and finds application in various digital systems. Its high-speed operation, wide operating voltage range, and low power consumption make it a popular choice among designers. However, its limitations in terms of propagation delay time and output current should be taken into account during system design.