IDT74LVC4245APYG

Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics:
  • Bidirectional voltage level translation between different logic levels
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
• Package: 48-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: The IDT74LVC4245APYG is a versatile IC that allows bidirectional voltage level translation between different logic levels, making it suitable for various applications.
• Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Logic Voltage Levels:
  • High-Level Input Voltage (VIH): 2.0V to VCC + 0.3V
  • Low-Level Input Voltage (VIL): -0.3V to 0.8V
  • High-Level Output Voltage (VOH): VCC - 0.4V to VCC
  • Low-Level Output Voltage (VOL): 0V to 0.4V
• Maximum Operating Frequency: 200MHz
• Input Capacitance: 4pF
• Output Capacitance: 6pF
• Propagation Delay: 2.5ns (max)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The IDT74LVC4245APYG has a total of 48 pins arranged as follows:

___________ | | 1 | | 48 |___________|

Pin Description:

• Pins 1 to 24: A-side bidirectional I/Os
• Pins 25 to 48: B-side bidirectional I/Os

Functional Features

• Bidirectional voltage level translation: Allows seamless communication between devices operating at different logic levels.
• Automatic direction control: Eliminates the need for additional control signals by automatically determining the direction of data flow.
• High-speed operation: Enables fast data transfer between different logic domains.
• ESD protection: Provides robust protection against electrostatic discharge, enhancing reliability.

Advantages and Disadvantages

Advantages: - Versatile voltage level translation capability - High-speed operation - Low power consumption - Wide operating voltage range - Automatic direction control simplifies system design

Disadvantages: - Limited maximum operating frequency compared to some specialized level shifters - Relatively higher input/output capacitance

Working Principles

The IDT74LVC4245APYG utilizes a combination of MOSFET-based level shifting circuits and automatic direction control logic. When the direction control pin is set to a specific logic level, the IC determines the direction of data flow and performs the necessary voltage level translation accordingly. The bidirectional I/O pins are designed to handle both high and low logic levels, ensuring compatibility with various systems.

Application Field Plans

The IDT74LVC4245APYG finds applications in various fields where voltage level translation is required. Some potential application areas include:

1. Microcontroller interfacing: Facilitating communication between microcontrollers operating at different logic levels.
2. Mixed-voltage systems: Enabling seamless integration of components with different voltage requirements.
3. Communication interfaces: Supporting bidirectional data transfer between devices using different logic families (e.g., TTL and CMOS).
4. Industrial automation: Level shifting signals in control systems involving sensors, actuators, and PLCs.
5. Automotive electronics: Voltage level translation in automotive communication networks like CAN bus and LIN bus.

Alternative Models

1. SN74LVC4245APW: Similar bidirectional level shifter from Texas Instruments.
2. MC74LVX4245: Another alternative from ON Semiconductor with comparable features.
3. 74LVC4245A: NXP Semiconductors offers this compatible IC with bidirectional voltage level translation capabilities.

These alternative models provide similar functionality and can be considered as substitutes for the IDT74LVC4245APYG based on specific application requirements.

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