PI74FCT245ATS

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter/Transceiver
• Characteristics:
  • Bidirectional data transfer between two voltage domains
  • High-speed operation
  • Low power consumption
• Package: Surface Mount Technology (SMT)
• Essence: Transferring digital signals between different voltage levels
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 4.5V to 5.5V
• Input Voltage Range (A/B Ports): 0V to VCC
• Output Voltage Range (A/B Ports): 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 PI74FCT245ATS has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Active low output enable control
2. DIR (Direction Control) - Determines the direction of data flow
3. A1-A8 (Port A Data Inputs/Outputs) - Bidirectional data lines for Port A
4. GND (Ground) - Ground reference
5. B1-B8 (Port B Data Inputs/Outputs) - Bidirectional data lines for Port B
6. VCC (Power Supply) - Positive supply voltage

Functional Features

• Bidirectional data transfer between two voltage domains
• Automatic direction control based on DIR pin
• High-speed operation allows for efficient data transmission
• Low power consumption for energy-efficient applications
• Robust design ensures reliable signal transfer
• ESD protection on all inputs and outputs

Advantages

• Enables seamless communication between devices operating at different voltage levels
• Supports high-speed data transfer, suitable for time-critical applications
• Low power consumption helps prolong battery life in portable devices
• Compact SMT package saves board space
• ESD protection safeguards against electrostatic discharge damage

Disadvantages

• Limited to bidirectional data transfer only
• Requires careful consideration of voltage compatibility between connected devices
• May not be suitable for applications requiring unidirectional data flow

Working Principles

The PI74FCT245ATS is a level shifter/transceiver IC designed to facilitate bidirectional data transfer between two voltage domains. It operates by automatically controlling the direction of data flow based on the DIR pin's logic level. When DIR is low, data flows from Port A to Port B, and when DIR is high, data flows from Port B to Port A.

The IC utilizes internal circuitry to ensure fast and reliable data transmission. It features ESD protection on all inputs and outputs, safeguarding against potential damage caused by electrostatic discharge.

Detailed Application Field Plans

The PI74FCT245ATS finds application in various scenarios where bidirectional data transfer between different voltage levels is required. Some common application fields include:

1. Microcontroller Interfacing: The IC enables communication between microcontrollers operating at different voltage levels, facilitating data exchange in mixed-voltage systems.
2. Sensor Networks: It can be used to interface sensors with microcontrollers or other devices, allowing data acquisition from sensors operating at different voltage levels.
3. Communication Interfaces: The IC serves as a bridge between devices with incompatible voltage levels, enabling seamless data transfer in communication interfaces such as UART, SPI, or I2C.
4. Industrial Automation: It finds application in industrial automation systems where different subsystems operate at distinct voltage levels, ensuring efficient data exchange between them.

Detailed and Complete Alternative Models

1. SN74LV245A: Similar bidirectional level shifter/transceiver IC with comparable specifications and pin configuration.
2. 74HCT245: Another popular choice for bidirectional level shifting applications, offering similar functionality and performance.
3. CD4508: Dual 4-bit bidirectional level shifter IC suitable for smaller-scale applications requiring lower pin count.

These alternative models provide similar functionality to the PI74FCT245ATS and can be considered based on specific project requirements.

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