SN74LS645DWG4

Product Overview

Category

SN74LS645DWG4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for data bus transceiver applications.

Characteristics

• High-speed, low-power Schottky technology
• Bidirectional data transfer capability
• Non-inverting outputs
• 3-state outputs for bus-oriented applications

Package

SN74LS645DWG4 is available in a 20-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of SN74LS645DWG4 lies in its ability to facilitate efficient and reliable data transfer between different components of a digital system.

Packaging/Quantity

SN74LS645DWG4 is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Input Voltage: 0V to 7V
• Output Voltage: 0V to 5.25V
• Operating Temperature Range: -40°C to 85°C
• Maximum Propagation Delay: 15ns

Detailed Pin Configuration

1. A1 - Data Bus A, Bit 1
2. B1 - Data Bus B, Bit 1
3. GND - Ground
4. A2 - Data Bus A, Bit 2
5. B2 - Data Bus B, Bit 2
6. OE - Output Enable
7. A3 - Data Bus A, Bit 3
8. B3 - Data Bus B, Bit 3
9. DIR - Direction Control
10. VCC - Power Supply
11. B4 - Data Bus B, Bit 4
12. A4 - Data Bus A, Bit 4
13. B5 - Data Bus B, Bit 5
14. A5 - Data Bus A, Bit 5
15. B6 - Data Bus B, Bit 6
16. A6 - Data Bus A, Bit 6
17. B7 - Data Bus B, Bit 7
18. A7 - Data Bus A, Bit 7
19. B8 - Data Bus B, Bit 8
20. A8 - Data Bus A, Bit 8

Functional Features

• Bidirectional data transfer between two data buses (A and B)
• Non-inverting outputs ensure data integrity
• Output Enable (OE) pin allows for tri-state operation, enabling bus-oriented applications
• Direction Control (DIR) pin determines the direction of data flow

Advantages and Disadvantages

Advantages

• High-speed data transfer capability
• Low power consumption
• Reliable and robust design
• Suitable for bus-oriented applications

Disadvantages

• Limited number of data bits (8 bits)
• Requires external control signals for proper operation

Working Principles

SN74LS645DWG4 operates by receiving data from one data bus (A) and transmitting it to another data bus (B), or vice versa. The direction of data flow is determined by the state of the Direction Control (DIR) pin. The Output Enable (OE) pin enables or disables the output drivers, allowing for tri-state operation when multiple devices are connected to the same bus.

Detailed Application Field Plans

SN74LS645DWG4 finds applications in various digital systems where bidirectional data transfer is required. Some common application fields include: - Microprocessor-based systems - Data communication systems - Industrial automation - Embedded systems

Detailed and Complete Alternative Models

1. SN74LS646DWG4
2. SN74LS647DWG4
3. SN74LS648DWG4
4. SN74LS649DWG4

These alternative models offer similar functionality and characteristics to SN74LS645DWG4, providing options for different system requirements.

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