Encyclopedia Entry: 74FCT245ATQG8

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Transceiver
• Characteristics: High-speed, Bi-directional, Octal Bus Transceiver
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Facilitates bidirectional data transfer between buses operating at different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: FCT
• Number of Channels: 8
• Input Voltage Range: 4.5V to 5.5V
• Output Voltage Range: 4.5V to 5.5V
• Propagation Delay Time: 3.5ns (Max)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. OE (Output Enable) - Active Low Output Enable
2. A1-A8 (Input/Output) - Data Bus Inputs/Outputs
3. B1-B8 (Input/Output) - Data Bus Inputs/Outputs
4. GND (Ground) - Ground Reference
5. B1-B8 (Input/Output) - Data Bus Inputs/Outputs
6. A1-A8 (Input/Output) - Data Bus Inputs/Outputs
7. VCC (Supply Voltage) - Positive Power Supply
8. DIR (Direction Control) - Direction Control Input

Functional Features

• Bidirectional data transfer between two buses with different voltage levels
• Non-inverting outputs for both input and output data
• High-speed operation suitable for bus-oriented applications
• Output enable control for disabling the outputs when not in use
• Direction control input for selecting the direction of data flow

Advantages

• Enables seamless communication between buses operating at different voltage levels
• High-speed operation allows for efficient data transfer
• Non-inverting outputs simplify the interface with other devices
• Output enable control provides flexibility in managing the output state
• Direction control input allows for easy selection of data flow direction

Disadvantages

• Limited to a specific number of channels (8 in this case)
• Requires careful consideration of voltage compatibility between buses

Working Principles

The 74FCT245ATQG8 is an octal bus transceiver that facilitates bidirectional data transfer between two buses operating at different voltage levels. It operates by using non-inverting buffers to transmit data from one bus to another. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the outputs. This IC ensures efficient and reliable communication between buses with varying voltage requirements.

Detailed Application Field Plans

• Interfacing between microcontrollers and peripheral devices
• Communication between different logic families or voltage domains
• Data transfer between memory modules and processors
• Bus communication in industrial automation systems
• Networking equipment and telecommunications applications

Detailed Alternative Models

• 74ACT245: Similar functionality but operates at a different voltage range (2V to 5.5V)
• 74HC245: Compatible with CMOS and TTL logic families, operates at a wider voltage range (2V to 6V)
• SN74LVC245A: Low-voltage version suitable for battery-powered applications (1.65V to 5.5V)

Note: The alternative models listed above are just a few examples and not an exhaustive list.

This encyclopedia entry provides an overview of the 74FCT245ATQG8, including its product details, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.