CD74HCT244ME4

Product Overview

• Category: Integrated Circuit
• Use: Buffer/Line Driver
• Characteristics: High-Speed, CMOS Logic, Octal Bus Buffer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers data between different parts of a digital system
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 9 ns (typical)
• Output Current: ±6 mA
• Number of Pins: 20

Detailed Pin Configuration

1. GND (Ground)
2. A1 (Input/Output)
3. B1 (Input/Output)
4. A2 (Input/Output)
5. B2 (Input/Output)
6. A3 (Input/Output)
7. B3 (Input/Output)
8. A4 (Input/Output)
9. B4 (Input/Output)
10. OE (Output Enable)
11. B5 (Input/Output)
12. A5 (Input/Output)
13. B6 (Input/Output)
14. A6 (Input/Output)
15. B7 (Input/Output)
16. A7 (Input/Output)
17. B8 (Input/Output)
18. A8 (Input/Output)
19. VCC (Supply Voltage)
20. GND (Ground)

Functional Features

• Octal non-inverting buffer/line driver
• High-speed operation
• Compatible with TTL inputs
• Balanced propagation delays
• Low power consumption
• Wide operating voltage range

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Compatibility with TTL inputs makes it versatile - Balanced propagation delays ensure accurate timing - Low power consumption reduces energy usage - Wide operating voltage range provides flexibility in different systems

Disadvantages: - Limited output current may restrict use in certain applications - Only supports non-inverting buffer/line driver functionality

Working Principles

The CD74HCT244ME4 is an octal non-inverting buffer/line driver integrated circuit. It operates by receiving input signals on the A1-A8 pins and providing corresponding output signals on the B1-B8 pins. The OE (Output Enable) pin controls the output state, enabling or disabling the buffer function.

When the OE pin is low, the outputs are enabled and mirror the inputs. Conversely, when the OE pin is high, the outputs are disabled and remain in a high-impedance state. This allows for easy connection to other devices without interfering with their operation.

The CD74HCT244ME4 is designed to operate at high speeds and is compatible with TTL inputs. It features balanced propagation delays, ensuring accurate timing between input and output signals. Additionally, it has a wide operating voltage range, allowing it to be used in various digital systems.

Detailed Application Field Plans

The CD74HCT244ME4 is commonly used in digital systems where data needs to be transferred between different parts of the system. Some specific application fields include:

1. Microprocessors: The CD74HCT244ME4 can be used to buffer address and data lines between the microprocessor and memory devices, ensuring reliable communication.

2. Communication Systems: It can be employed in communication systems to amplify and buffer signals between different components, such as transceivers and antennas.

3. Industrial Automation: The IC can be utilized in industrial automation systems to interface between control units and various sensors or actuators, enabling efficient data transfer.

4. Automotive Electronics: It finds application in automotive electronics for buffering signals between different modules, such as engine control units, sensors, and displays.

Detailed and Complete Alternative Models

1. SN74HCT244N: This is a similar octal buffer/line driver IC from Texas Instruments. It has comparable specifications and pin configuration to the CD74HCT244ME4.

2. MC74HCT244AN: Another alternative from ON Semiconductor, offering similar functionality and characteristics as the CD74HCT244ME4.

3. 74HCT244D: This octal buffer/line driver IC from NXP Semiconductors is a drop-in replacement for the CD74HCT244ME4, with identical pin configuration and features.

4. CD74HC244E: A CMOS logic octal buffer/line driver from Texas Instruments, providing similar functionality and performance as the CD74HCT244ME4.

These alternative models can be considered based on specific requirements and availability.

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