Encyclopedia Entry: 74ABT245CSCX

Product Overview

Category

The 74ABT245CSCX belongs to the category of integrated circuits (ICs) and specifically falls under the group of bus transceivers.

Use

This IC is commonly used for bidirectional level shifting and voltage translation between different logic families, such as TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor).

Characteristics

• Bidirectional data transfer capability
• Wide operating voltage range
• High-speed operation
• Low power consumption
• Schmitt-trigger inputs for noise immunity
• Output current drive capability

Package

The 74ABT245CSCX is available in a small outline package (SOIC) with 20 pins. The package provides protection and easy integration onto printed circuit boards (PCBs).

Essence

The essence of the 74ABT245CSCX lies in its ability to facilitate seamless communication between different logic families by converting voltage levels and ensuring reliable data transmission.

Packaging/Quantity

The IC is typically packaged in reels or tubes, with each reel containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Supply Voltage Range: 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
• Maximum Propagation Delay: 7 ns
• Maximum Output Current: ±24 mA

Detailed Pin Configuration

The 74ABT245CSCX has a total of 20 pins, which are assigned specific functions. The pin configuration is as follows:

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

Functional Features

• Bidirectional data transfer: Allows data to be transmitted in both directions.
• Voltage level translation: Converts logic levels between different families, ensuring compatibility.
• Output enable control: Enables or disables the output stage for efficient power management.
• Direction control: Determines the direction of data flow.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems.
• High-speed operation enables fast data transmission.
• Low power consumption contributes to energy efficiency.
• Schmitt-trigger inputs provide noise immunity, enhancing signal integrity.
• Output current drive capability facilitates driving external loads.

Disadvantages

• Limited number of input/output pins may restrict the complexity of certain applications.
• Requires careful consideration of voltage compatibility to avoid damage or incorrect data transmission.

Working Principles

The 74ABT245CSCX operates by receiving data from one logic family, such as TTL, and converting it into a compatible format for another logic family, such as CMOS. It achieves this through bidirectional level shifting and voltage translation. The direction control pin determines the flow of data, while the output enable pin enables or disables the output stage as needed.

Detailed Application Field Plans

The 74ABT245CSCX finds applications in various fields where voltage level translation and bidirectional data transfer are required. Some specific application areas include:

1. Microcontroller interfacing: Facilitates communication between microcontrollers operating at different logic levels.
2. Communication systems: Enables data exchange between devices using different logic families.
3. Industrial automation: Allows integration of components with varying voltage requirements.
4. Automotive electronics: Supports compatibility between different electronic systems within vehicles.
5. Consumer electronics: Enables seamless connectivity between devices with different logic families.

Detailed and Complete Alternative Models

• SN74LVC245A: Similar bidirectional bus transceiver IC with low voltage CMOS technology.
• CD4050B: Hex non-inverting buffer/converter IC for voltage level translation.
• MC74VHC245: Octal bus transceiver IC with high-speed CMOS technology.

These alternative models offer similar functionality to the 74ABT245CSCX and can be used as