SN74ALS245A-1NG4

Product Overview

Category

The SN74ALS245A-1NG4 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
• Bidirectional data transfer capability
• Eight-bit wide, non-inverting transceiver
• 3-state outputs for bus-oriented applications

Package

The SN74ALS245A-1NG4 is available in a standard 20-pin DIP (Dual In-line Package) format.

Essence

The essence of this product lies in its ability to facilitate efficient and reliable data transfer between different logic families.

Packaging/Quantity

The SN74ALS245A-1NG4 is typically packaged in reels or tubes, with each reel containing 2,000 units.

Specifications

• Supply voltage: 4.5V to 5.5V
• Input voltage range: 0V to VCC
• Output voltage range: 0V to VCC
• Operating temperature range: -40°C to +85°C
• Propagation delay time: 10ns (max)
• Output current: ±24mA

Detailed Pin Configuration

The SN74ALS245A-1NG4 has a total of 20 pins, which are assigned specific functions as follows:

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

Functional Features

The SN74ALS245A-1NG4 offers the following functional features:

• Bidirectional data transfer: Allows data to be transmitted in both directions, making it suitable for bus interface applications.
• Non-inverting transceiver: Ensures that the output signal is an exact replica of the input signal.
• 3-state outputs: Enables multiple devices to share a common bus without interfering with each other.

Advantages and Disadvantages

Advantages

• High-speed operation: The SN74ALS245A-1NG4 can handle data transfers at a fast rate, making it ideal for time-critical applications.
• Compatibility: It is compatible with both TTL and CMOS logic families, providing flexibility in system design.
• Low power consumption: This IC consumes minimal power, contributing to energy-efficient designs.

Disadvantages

• Limited voltage range: The operating voltage range is restricted to 4.5V to 5.5V, which may not be suitable for all applications.
• Propagation delay: The propagation delay time of 10ns (max) may introduce slight delays in data transmission.

Working Principles

The SN74ALS245A-1NG4 operates based on the principles of digital logic. It uses a combination of transistors and other electronic components to facilitate the bidirectional transfer of data between different logic families. The direction control pin (DIR) determines the flow of data, while the output enable pin (OE) enables or disables the outputs.

Detailed Application Field Plans

The SN74ALS245A-1NG4 finds applications in various fields, including:

1. Microcontroller interfacing: It is commonly used to interface microcontrollers with external devices, such as sensors, displays, and memory modules.
2. Industrial automation: This IC plays a crucial role in connecting different components within industrial automation systems, allowing for efficient communication and control.
3. Communication systems: It is utilized in communication systems to interface between different logic levels, ensuring seamless data transmission.
4. Automotive electronics: The SN74ALS245A-1NG4 is employed in automotive electronics for signal level shifting and bus interface applications.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74ALS245A-1NG4 include:

1. SN74LVC245A: Low-voltage