PI74FCT245ATQ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter/Transceiver
• Characteristics: High-speed, bidirectional data transfer, voltage level translation
• Package: 20-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Transfers data between two different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200MHz
• Number of Channels: 8
• Input/Output Type: Tri-State
• Logic Family: FCT

Detailed Pin Configuration

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

Functional Features

• Bidirectional data transfer between two voltage domains
• Level shifting capability for interfacing between different logic families
• Tri-state outputs for bus sharing applications
• High-speed operation up to 200MHz
• Output enable control for easy system integration

Advantages and Disadvantages

Advantages

• Allows communication between devices operating at different voltage levels
• Provides reliable data transfer with minimal signal degradation
• Supports high-speed data transmission
• Tri-state outputs enable bus sharing, reducing the number of required pins

Disadvantages

• Limited to a maximum operating frequency of 200MHz
• Requires careful consideration of voltage compatibility between input and output domains

Working Principles

The PI74FCT245ATQ is a bidirectional level shifter/transceiver IC. It facilitates data transfer between two voltage domains, allowing communication between devices operating at different logic levels. The device utilizes tri-state outputs, enabling multiple devices to share a common bus.

The direction of data flow is controlled by the DIR pin. When DIR is set to a logic high, data is transferred from Bus A to Bus B, and when DIR is set to a logic low, data is transferred from Bus B to Bus A. The OE pin controls the output enable function, allowing the user to disable the outputs when not in use.

The PI74FCT245ATQ operates within a supply voltage range of 4.5V to 5.5V and supports a maximum operating frequency of 200MHz. It is designed to provide reliable and efficient data transfer while minimizing signal degradation.

Detailed Application Field Plans

The PI74FCT245ATQ is commonly used in various applications that require voltage level translation and bidirectional data transfer. Some of the typical application fields include:

1. Microcontroller interfacing: The IC enables communication between microcontrollers operating at different voltage levels, facilitating seamless integration into complex systems.
2. Memory interfaces: It allows data transfer between memory modules operating at different logic levels, ensuring compatibility and efficient data exchange.
3. Communication systems: The IC is utilized in communication systems to interface between different voltage domains, enabling data transfer between various components such as transceivers, controllers, and peripherals.
4. Industrial automation: It finds application in industrial automation systems where different devices with varying voltage requirements need to communicate with each other.

Detailed and Complete Alternative Models

1. SN74LV245A: This IC offers similar functionality and features as the PI74FCT245ATQ, with a supply voltage range of 2V to 5.5V and a maximum operating frequency of 125MHz.
2. MC74LVX245: Another alternative with comparable characteristics, supporting a supply voltage range of 2V to 3.6V and a maximum operating frequency of 100MHz.
3. CD74HCT245: This IC operates at a wider supply voltage range of 4.5V to 5.5V and supports a maximum operating frequency of 25MHz.

These alternative models provide options for designers based on specific voltage requirements, operating frequencies, and compatibility with existing systems.

In conclusion, the PI74FCT245ATQ is a versatile level shifter/transceiver IC that