Encyclopedia Entry: 74FCT2245ATSOG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Transceiver
• Characteristics: High-speed, bidirectional, voltage-level translation
• Package: SOG (Small Outline Gull Wing)
• Essence: Transferring digital signals between different voltage domains
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 4.5V to 5.5V
• Input Voltage Range (Vref): 0V to VCC
• Output Voltage Range (Vref): 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 3.5ns (typical)
• Output Drive Capability: ±24mA
• Input Capacitance: 4pF (typical)
• Output Capacitance: 6pF (typical)

Detailed Pin Configuration

The 74FCT2245ATSOG IC has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) 1
2. A1 (Data Bus) 1
3. B1 (Data Bus) 1
4. A2 (Data Bus) 2
5. B2 (Data Bus) 2
6. A3 (Data Bus) 3
7. B3 (Data Bus) 3
8. A4 (Data Bus) 4
9. B4 (Data Bus) 4
10. GND (Ground)
11. OE (Output Enable) 2
12. Y1 (Data Bus) 1
13. Y2 (Data Bus) 2
14. Y3 (Data Bus) 3
15. Y4 (Data Bus) 4
16. VCC (Supply Voltage)
17. DIR (Direction Control)
18. BDIR (Bidirectional Direction Control)
19. NC (No Connection)
20. GND (Ground)

Functional Features

• Bidirectional voltage-level translation between two different voltage domains.
• High-speed operation with low propagation delay.
• Output drive capability allows for reliable signal transmission over long distances.
• Output enable control for disabling the outputs when not in use.
• Direction control pins for selecting the direction of data flow.

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices operating at different voltage levels. - High-speed operation ensures efficient data transfer. - Robust output drive capability ensures signal integrity. - Compact SOG package allows for space-saving integration.

Disadvantages: - Limited to bidirectional voltage-level translation, may not be suitable for unidirectional applications. - Requires careful consideration of voltage compatibility between input and output domains.

Working Principles

The 74FCT2245ATSOG is designed to facilitate the bidirectional transfer of digital signals between two voltage domains. It utilizes a combination of level-shifting circuitry and tri-state buffers to achieve this functionality. The direction of data flow is controlled by the DIR and BDIR pins. When enabled, the IC translates and transfers the signals from one domain to the other, ensuring proper voltage compatibility.

Detailed Application Field Plans

The 74FCT2245ATSOG finds application in various scenarios where digital signals need to be transferred between different voltage domains. Some common application fields include: - Interfacing between microcontrollers operating at different voltage levels. - Communication between FPGA (Field-Programmable Gate Array) and peripheral devices. - Level shifting in mixed-voltage systems, such as automotive electronics or industrial control systems.

Detailed and Complete Alternative Models

• 74FCT2245ATQG8: Similar functionality, available in a different package (QSOP).
• SN74LVC245A: Bidirectional voltage-level translator with similar characteristics, offered by Texas Instruments.
• MC74VHC245: High-speed octal bus transceiver with comparable features, manufactured by ON Semiconductor.

Note: The alternative models listed above are provided for reference and may have slight variations in specifications or pin configuration. It is recommended to consult the respective datasheets for detailed information.

This encyclopedia entry provides an overview of the 74FCT2245ATSOG IC, including its product details, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.