SN74AS240ADWG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate
• Characteristics: Octal Buffer/Line Driver with 3-State Outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Buffering and driving signals in digital circuits
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: 2.7V (min)
• Low-Level Output Voltage: 0.5V (max)
• Maximum Operating Frequency: 40MHz
• Number of Inputs/Outputs: 8

Detailed Pin Configuration

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

Functional Features

• Octal buffer with 3-state outputs
• Non-inverting outputs
• High output drive capability
• 3-state outputs for bus-oriented applications
• Outputs can be disabled using the OE (Output Enable) pin

Advantages and Disadvantages

Advantages: - High output drive capability allows for driving multiple loads - 3-state outputs enable bus sharing and reduce conflicts - Non-inverting outputs preserve signal integrity

Disadvantages: - Limited operating frequency compared to some newer ICs - Requires external pull-up resistors for proper operation in certain applications

Working Principles

The SN74AS240ADWG4 is an octal buffer with 3-state outputs. It takes input signals and buffers them, providing amplified and non-inverted outputs. The 3-state outputs allow the device to be effectively disconnected from the bus when not in use, reducing conflicts and enabling bus sharing.

The device operates within a specified supply voltage range and has specific voltage thresholds for high and low-level inputs and outputs. When the OE (Output Enable) pin is low, the outputs are enabled and actively driven. When the OE pin is high, the outputs are in a high-impedance state, effectively disconnecting them from the circuit.

Detailed Application Field Plans

The SN74AS240ADWG4 is commonly used in various digital systems where buffering and driving of signals are required. Some application fields include:

1. Microprocessor Systems: The IC can be used to interface between the microprocessor and other peripheral devices, ensuring proper signal levels and driving capability.

2. Data Communication: It can be employed in data communication systems to buffer and drive signals between different components, such as transceivers, switches, and routers.

3. Memory Systems: The IC can be utilized in memory systems to amplify and buffer address and data signals between the memory modules and the memory controller.

4. Industrial Control Systems: It finds applications in industrial control systems where it can be used to buffer and drive signals between various control units, sensors, and actuators.

Detailed and Complete Alternative Models

1. SN74AS244: Octal Buffer/Line Driver with 3-State Outputs, similar functionality to SN74AS240ADWG4.
2. SN74LS240: Octal Buffer/Line Driver with 3-State Outputs, compatible with TTL logic levels.
3. SN74HC240: Octal Buffer/Line Driver with 3-State Outputs, operates at higher frequencies and lower power consumption compared to SN74AS240ADWG4.

These alternative models offer similar functionality but may have different characteristics, specifications, and package options.

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