MC74HCT244ADW

Product Overview

• Category: Integrated Circuit
• Use: Logic Level Shifter
• Characteristics: High-Speed, CMOS Technology
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The MC74HCT244ADW is a logic level shifter integrated circuit that allows for bidirectional voltage translation between different logic levels.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HCT
• Number of Channels: 8
• Input/Output Compatibility: TTL/CMOS
• Propagation Delay: 9 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MC74HCT244ADW has a total of 20 pins. The pin configuration is as follows:

1. A1
2. Y1
3. A2
4. Y2
5. A3
6. Y3
7. A4
8. GND
9. Y4
10. A5
11. Y5
12. A6
13. Y6
14. A7
15. Y7
16. A8
17. VCC
18. OE (Output Enable)
19. Y8
20. GND

Functional Features

• Bidirectional voltage translation between TTL and CMOS logic levels.
• High-speed operation suitable for applications requiring fast data transfer.
• Wide operating voltage range allows compatibility with various power supply voltages.
• Output enable (OE) pin provides control over the direction of data flow.

Advantages

• Provides seamless integration between different logic level systems.
• Low power consumption due to CMOS technology.
• High-speed operation enables efficient data transfer.
• Wide operating voltage range allows for versatile applications.

Disadvantages

• Limited number of channels (8) may not be sufficient for complex systems requiring more connections.
• Propagation delay of 9 ns may introduce timing issues in certain high-speed applications.

Working Principles

The MC74HCT244ADW utilizes CMOS technology to achieve bidirectional voltage translation. It consists of eight input/output channels that can shift logic levels between TTL and CMOS. The direction of data flow is controlled by the output enable (OE) pin. When OE is low, the device is enabled, and data can flow bidirectionally. When OE is high, the device is disabled, and all outputs are in a high-impedance state.

Detailed Application Field Plans

The MC74HCT244ADW is commonly used in various applications where logic level shifting is required. Some of the typical application fields include:

1. Microcontroller interfacing with different logic level peripherals.
2. Communication systems involving multiple logic level devices.
3. Data acquisition systems requiring voltage translation between sensors and microcontrollers.
4. Industrial automation systems for signal conditioning and level conversion.
5. Robotics and motor control circuits.

Alternative Models

There are several alternative models available that offer similar functionality to the MC74HCT244ADW. Some popular alternatives include:

1. SN74HCT244N by Texas Instruments
2. CD74HCT244E by Texas Instruments
3. 74HCT244 by NXP Semiconductors
4. TC74HCT244AF by Toshiba

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

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