SN74ALS245A-1DWRG4

Product Overview

Category

The SN74ALS245A-1DWRG4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for signal level shifting and bus interface applications.

Characteristics

• High-speed, low-power device
• Compatible with TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic families
• Wide operating voltage range: 2 V to 6 V
• 8-bit bidirectional transceiver
• Non-inverting outputs
• 3-state outputs for bus-oriented applications

Package

The SN74ALS245A-1DWRG4 is available in a small-sized SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of this product lies in its ability to provide bidirectional communication between two buses with different voltage levels.

Packaging/Quantity

The SN74ALS245A-1DWRG4 is typically packaged in reels containing 2500 units.

Specifications

• Supply Voltage Range: 2 V to 6 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 9 ns (max)
• Output Current: ±24 mA

Detailed Pin Configuration

The SN74ALS245A-1DWRG4 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

The SN74ALS245A-1DWRG4 offers the following functional features:

• Bidirectional data transfer between two buses with different voltage levels
• Non-inverting outputs for direct compatibility with various logic families
• 3-state outputs for bus-oriented applications, allowing multiple devices to share a common bus

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data transfer
• Wide operating voltage range provides flexibility in various applications
• Compatibility with TTL and CMOS logic families allows for easy integration into existing systems
• 3-state outputs facilitate bus sharing among multiple devices

Disadvantages

• Limited output current may restrict usage in certain high-current applications
• Propagation delay time may affect real-time data transfer in time-critical applications

Working Principles

The SN74ALS245A-1DWRG4 operates by receiving input data from one bus and transmitting it to another bus bidirectionally. The direction of data flow is controlled by the DIR pin. When the DIR pin is set to a specific logic level, the IC either transmits data from bus A to bus B or vice versa. The OE pin enables or disables the outputs, allowing for 3-state operation.

Detailed Application Field Plans

The SN74ALS245A-1DWRG4 finds applications in various fields, including:

1. Microcontroller interfacing
2. Data communication systems
3. Industrial automation
4. Automotive electronics
5. Robotics
6. Networking equipment

Detailed and Complete Alternative Models

1. SN74ALS244A-1DWRG4: Octal buffer/line driver with 3-state outputs
2. SN74ALS240A-1DWRG4: Octal inverting buffer/line driver with 3-state outputs
3. SN74ALS541-1DWRG4: Octal buffer/line driver with 3-state outputs and non-inverting inputs

These alternative models offer similar functionality to the SN74ALS245A-1DWRG4 and can be used as substitutes depending on specific requirements.

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