SN74LS368AD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Buffer/Driver
• Characteristics: TTL (Transistor-Transistor Logic) technology, 3-state outputs
• Package: DIP (Dual In-line Package)
• Essence: Buffering and driving signals in digital circuits
• Packaging/Quantity: Available in tubes of 25 pieces

Specifications

• Supply Voltage: 4.75V to 5.25V
• High-Level Input Voltage: 2V to 5.25V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: 2.7V (min)
• Low-Level Output Voltage: 0.5V (max)
• Maximum Operating Frequency: 33MHz
• Propagation Delay Time: 9ns (typical)

Detailed Pin Configuration

The SN74LS368AD has a 16-pin DIP package with the following pin configuration:

1. GND (Ground)
2. A1 (Input A1)
3. B1 (Input B1)
4. Y1 (Output Y1)
5. A2 (Input A2)
6. B2 (Input B2)
7. Y2 (Output Y2)
8. A3 (Input A3)
9. B3 (Input B3)
10. Y3 (Output Y3)
11. A4 (Input A4)
12. B4 (Input B4)
13. Y4 (Output Y4)
14. VCC (Supply Voltage)
15. OE (Output Enable)
16. GND (Ground)

Functional Features

• The SN74LS368AD is a quad buffer/driver with 3-state outputs.
• It provides non-inverting buffering and driving capabilities for digital signals.
• The 3-state outputs allow multiple devices to share a common bus without interference.
• The output enable (OE) pin controls the tri-state outputs, enabling or disabling them as needed.

Advantages and Disadvantages

Advantages: - TTL technology ensures compatibility with other TTL logic devices. - 3-state outputs allow for efficient bus sharing in multi-device systems. - High-speed operation with low propagation delay time.

Disadvantages: - Limited supply voltage range (4.75V to 5.25V). - Not suitable for high-frequency applications above 33MHz.

Working Principles

The SN74LS368AD operates based on TTL technology. It buffers and drives digital signals using non-inverting logic. When the OE pin is high, the outputs are enabled and actively drive the connected circuitry. When the OE pin is low, the outputs enter a high-impedance state, effectively disconnecting them from the circuit, allowing other devices to take control of the bus.

Detailed Application Field Plans

The SN74LS368AD finds applications in various digital systems where buffering and driving of signals are required. Some potential application fields include:

1. Microprocessor Systems: Buffering address and data lines between the microprocessor and memory or peripheral devices.
2. Communication Systems: Driving signals between different communication modules or interfaces.
3. Industrial Control Systems: Buffering control signals between sensors, actuators, and control units.
4. Test and Measurement Equipment: Providing signal conditioning and driving capabilities for test signals.

Detailed and Complete Alternative Models

1. SN74LS367A: Similar to SN74LS368AD but with open-collector outputs.
2. SN74LS244: Octal buffer/driver with 3-state outputs.
3. SN74LS541: Octal buffer/driver with 3-state outputs and increased output current capability.

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

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