TC74HC244AF(EL,F)

Basic Information Overview

• Category: Integrated Circuit
• Use: Buffer/Line Driver
• Characteristics:
  • High-Speed CMOS Logic
  • Octal Bus Buffer with 3-State Outputs
• Package: SOP (Small Outline Package)
• Essence: Buffering and driving signals in digital systems
• 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
• Maximum Operating Frequency: 50MHz
• Number of Channels: 8
• Output Current: ±6mA
• Propagation Delay Time: 9ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC74HC244AF(EL,F) has a total of 20 pins. The pin configuration is as follows:

1. GND (Ground)
2. A1 (Input A1)
3. B1 (Output B1)
4. A2 (Input A2)
5. B2 (Output B2)
6. A3 (Input A3)
7. B3 (Output B3)
8. A4 (Input A4)
9. B4 (Output B4)
10. OE (Output Enable)
11. B5 (Output B5)
12. A5 (Input A5)
13. B6 (Output B6)
14. A6 (Input A6)
15. B7 (Output B7)
16. A7 (Input A7)
17. B8 (Output B8)
18. VCC (Supply Voltage)
19. NC (No Connection)
20. GND (Ground)

Functional Features

• Octal bus buffer with 3-state outputs
• High-speed CMOS logic for fast signal propagation
• Output enable (OE) pin for controlling the output state
• Wide supply voltage range for compatibility with various systems
• Low power consumption

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient signal buffering - 3-state outputs provide flexibility in connecting multiple devices - Wide supply voltage range enables compatibility with different systems - Small package size saves board space

Disadvantages: - Limited output current may not be suitable for driving heavy loads - Propagation delay time may affect timing-sensitive applications - Not suitable for high-voltage applications due to limited supply voltage range

Working Principles

The TC74HC244AF(EL,F) is an octal bus buffer with 3-state outputs. It acts as a buffer and line driver, receiving input signals and amplifying them to drive connected devices. The output enable (OE) pin controls the output state, allowing the device to be tri-stated when not in use.

When the OE pin is low, the outputs are enabled and actively driven by the input signals. When the OE pin is high, the outputs are disabled and enter a high-impedance state, effectively disconnecting them from the system.

The high-speed CMOS logic used in the IC ensures fast signal propagation, making it suitable for applications where timing is critical.

Detailed Application Field Plans

The TC74HC244AF(EL,F) can be used in various digital systems that require signal buffering and driving. Some application fields include:

1. Microcontrollers: The IC can be used to interface microcontrollers with other devices, such as sensors, displays, or memory modules.
2. Communication Systems: It can be employed in communication systems to amplify and buffer signals between different components, ensuring reliable data transmission.
3. Industrial Automation: The IC can be utilized in industrial automation systems to drive actuators, motors, or control signals.
4. Automotive Electronics: It can be integrated into automotive electronics for signal buffering and driving in various subsystems, such as infotainment systems or engine control units.

Detailed and Complete Alternative Models

1. SN74HC244: Similar octal bus buffer with 3-state outputs from Texas Instruments.
2. CD74HC244: Octal buffer/line driver with 3-state outputs from Texas Instruments.
3. MC74HC244: High-speed CMOS octal buffer/line driver with 3-state outputs from ON Semiconductor.

These alternative models offer similar functionality and characteristics to the TC74HC244AF(EL,F) and can be considered as alternatives based on specific requirements and availability.

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