DM74ALS645AN

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Data Bus Transceiver
• Characteristics: High-speed, TTL compatible, bidirectional data transfer
• Package: 20-pin DIP (Dual In-line Package)
• Essence: Facilitates the bidirectional transfer of data between two separate buses
• Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier

Specifications

• Supply Voltage: 4.5V to 5.5V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 10ns
• Maximum Input Rise and Fall Time: 6ns
• Maximum Output Current: ±24mA

Detailed Pin Configuration

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

Functional Features

• Bidirectional data transfer between two separate buses (A and B)
• TTL compatible inputs and outputs
• High-speed operation with minimal propagation delay
• Output enable and direction control for flexible data flow management

Advantages

• Enables efficient data exchange between different bus systems
• Compatible with TTL logic levels, ensuring seamless integration with existing circuits
• Fast operation allows for quick data transmission
• Flexible control options provide versatility in managing data flow

Disadvantages

• Limited to 8-bit data bus width
• Requires additional external components for voltage regulation and protection

Working Principles

The DM74ALS645AN is a bidirectional data bus transceiver that facilitates the transfer of data between two separate buses, A and B. The direction of data flow is controlled by the DIR pin. When DIR is high, data flows from bus A to bus B, and when DIR is low, data flows from bus B to bus A. The OE pin enables or disables the output buffers, allowing for control over when data is transmitted.

Detailed Application Field Plans

The DM74ALS645AN is commonly used in various applications where bidirectional data transfer between different bus systems is required. Some typical application fields include: - Microprocessor-based systems - Data communication equipment - Industrial automation - Automotive electronics - Test and measurement instruments

Detailed and Complete Alternative Models

• SN74ALS645AN
• MC74ALS645AN
• CD74ALS645AN
• 74F645AN
• 74HC645AN

Note: This list is not exhaustive, and there may be other alternative models available from different manufacturers.

This entry provides an overview of the DM74ALS645AN integrated circuit, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models. The DM74ALS645AN is a versatile data bus transceiver that enables efficient bidirectional data transfer between separate buses. Its high-speed operation, TTL compatibility, and flexible control options make it suitable for various applications in different industries.