SN74ALS245ADWR

Product Overview

• Category: Integrated Circuit
• Use: Bus Transceiver
• Characteristics: High-speed, non-inverting, 8-bit transceiver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Converts signals between two bidirectional bus systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 125 MHz
• Propagation Delay Time: 6 ns
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The SN74ALS245ADWR has a total of 20 pins. The pin configuration is as follows:

1. DIR (Direction Control)
2. GND (Ground)
3. B7 (Data Bus B, Bit 7)
4. B6 (Data Bus B, Bit 6)
5. B5 (Data Bus B, Bit 5)
6. B4 (Data Bus B, Bit 4)
7. B3 (Data Bus B, Bit 3)
8. B2 (Data Bus B, Bit 2)
9. B1 (Data Bus B, Bit 1)
10. B0 (Data Bus B, Bit 0)
11. VCC (Supply Voltage)
12. A0 (Data Bus A, Bit 0)
13. A1 (Data Bus A, Bit 1)
14. A2 (Data Bus A, Bit 2)
15. A3 (Data Bus A, Bit 3)
16. A4 (Data Bus A, Bit 4)
17. A5 (Data Bus A, Bit 5)
18. A6 (Data Bus A, Bit 6)
19. A7 (Data Bus A, Bit 7)
20. OE (Output Enable)

Functional Features

• Bidirectional data transfer between two bus systems
• Non-inverting logic ensures signal integrity
• High-speed operation for efficient data transmission
• Output enable control for flexible usage

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data transfer - Non-inverting logic preserves signal quality - Flexible output enable control enhances usability

Disadvantages: - Limited operating temperature range (-40°C to 85°C) - Requires a supply voltage within the specified range

Working Principles

The SN74ALS245ADWR is a bidirectional bus transceiver that converts signals between two bus systems. It operates by enabling data transfer in either direction based on the direction control input (DIR). 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 non-inverting logic ensures that the signal integrity is maintained during the conversion process.

Detailed Application Field Plans

The SN74ALS245ADWR is commonly used in various applications where bidirectional data transfer between different bus systems is required. Some of the specific application fields include:

1. Microprocessor-based systems
2. Data communication networks
3. Industrial automation
4. Automotive electronics
5. Embedded systems

Detailed and Complete Alternative Models

1. SN74ALS244ADWR: Octal Buffer/Line Driver with 3-State Outputs
2. SN74ALS240ADWR: Octal Inverter/Buffer with 3-State Outputs
3. SN74ALS245AN: DIP (Dual In-line Package) version of SN74ALS245ADWR

These alternative models offer similar functionality and can be used as substitutes for the SN74ALS245ADWR in various applications.

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