SN74AHC240DBR

Product Overview

• Category: Integrated Circuit
• Use: Buffer/Line Driver
• Characteristics: High-Speed, Low-Power, Octal Bus Buffer
• Package: SSOP (Shrink Small Outline Package)
• Essence: A high-performance buffer designed to provide signal amplification and isolation in digital circuits.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Input Capacitance: 3.5 pF
• Output Capacitance: 6 pF
• Propagation Delay Time: 7 ns
• Output Current: ±8 mA

Detailed Pin Configuration

The SN74AHC240DBR has a total of 20 pins, which are assigned as follows:

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

Functional Features

• Octal buffer with 3-state outputs
• High-speed operation with low power consumption
• Wide supply voltage range for compatibility with various systems
• 3-state outputs allow multiple devices to share a common bus

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer in digital circuits. - Low-power consumption helps conserve energy in battery-powered applications. - Wide supply voltage range allows for compatibility with different voltage levels. - 3-state outputs facilitate bus sharing among multiple devices.

Disadvantages: - Limited output current may restrict its use in certain high-current applications. - Input and output capacitance can affect signal integrity in high-frequency circuits.

Working Principles

The SN74AHC240DBR is an octal buffer that amplifies and isolates digital signals. It operates by receiving input signals on the A1-A8 pins and providing amplified output signals on the Y1-Y8 pins. The OE (Output Enable) pin controls the output state, allowing the device to be enabled or disabled as needed. When the OE pin is high, the outputs are active, and when it is low, the outputs are in a high-impedance state.

Detailed Application Field Plans

The SN74AHC240DBR is commonly used in various digital systems where signal buffering and isolation are required. Some specific application fields include:

1. Microcontrollers: The buffer can be used to amplify and isolate signals between microcontrollers and other peripheral devices.
2. Memory Systems: It can be employed to interface between memory modules and the memory controller, ensuring reliable data transfer.
3. Communication Systems: The buffer helps in signal conditioning and level shifting between different communication modules.
4. Industrial Automation: It finds application in PLCs (Programmable Logic Controllers) and other automation systems for signal amplification and isolation.

Detailed and Complete Alternative Models

1. SN74AHC244DBR: Octal Buffer/Line Driver with 3-State Outputs
2. SN74AHC541DBR: Octal Buffer/Line Driver with 3-State Outputs and Schmitt-Trigger Inputs
3. SN74AHC573DBR: Octal Transparent D-Type Latch with 3-State Outputs

These alternative models offer similar functionality to the SN74AHC240DBR and can be used as substitutes depending on specific requirements.

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