SN74AHC240DBRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate
• Characteristics: High-Speed, Low-Power, Octal Buffer/Line Driver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Buffer and Line Driver
• 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
• High-Level Input Voltage: 0.7 x VCC to VCC
• Low-Level Input Voltage: 0 V to 0.3 x VCC
• High-Level Output Voltage: 0.9 x VCC to VCC
• Low-Level Output Voltage: 0 V to 0.1 x VCC
• Maximum Operating Frequency: 50 MHz
• Number of Inputs/Outputs: 8

Detailed Pin Configuration

The SN74AHC240DBRG4 has a total of 20 pins. The pin configuration is 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 (Supply Voltage)
20. GND (Ground)

Functional Features

• Octal buffer/line driver with 3-state outputs
• High-speed operation, suitable for high-frequency applications
• Low power consumption, ideal for battery-powered devices
• 3-state outputs allow multiple devices to share a common bus
• Schmitt-trigger inputs provide hysteresis and improve noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Low power consumption prolongs battery life in portable devices - 3-state outputs facilitate bus sharing among multiple devices - Schmitt-trigger inputs enhance noise immunity

Disadvantages: - Limited number of inputs/outputs (8) - Maximum operating frequency may not be sufficient for some applications

Working Principles

The SN74AHC240DBRG4 is an octal buffer/line driver that operates on a supply voltage range of 2 V to 5.5 V. It accepts logic level inputs and provides buffered outputs. The device features 3-state outputs, which means they can be actively driven high or low or left floating (disconnected). This allows multiple devices to share a common bus without interfering with each other.

The inputs of the SN74AHC240DBRG4 are equipped with Schmitt-trigger circuitry, which provides hysteresis and improves noise immunity. This ensures reliable operation even in the presence of electrical noise or signal degradation.

Detailed Application Field Plans

The SN74AHC240DBRG4 can be used in various applications, including:

1. Data communication systems: The device's high-speed operation makes it suitable for use in data transmission systems, such as UART (Universal Asynchronous Receiver-Transmitter) interfaces.
2. Memory interfacing: The buffer/line driver can be used to interface between a microcontroller and external memory devices, ensuring reliable data transfer.
3. Bus systems: The 3-state outputs allow multiple devices to share a common bus, making the SN74AHC240DBRG4 ideal for use in bus systems like I2C (Inter-Integrated Circuit) or SPI (Serial Peripheral Interface).
4. Industrial automation: The device's low power consumption and noise immunity make it suitable for use in industrial automation systems, where reliability and efficiency are crucial.

Detailed and Complete Alternative Models

1. SN74AHC244DBRG4: Octal buffer/line driver with non-inverting 3-state outputs.
2. SN74AHC541DBRG4: Octal buffer/line driver with inverting 3-state outputs.
3. SN74AHC573DBRG4: Octal transparent latch with 3-state outputs.

These alternative models offer similar functionality but may have different pin configurations or additional features depending on specific application requirements.

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