74LCX16244MEA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: Low Voltage, High-Speed, Bidirectional
• Package: 48-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic Level Translation between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Logic Voltage Levels: 1.8V and 3.3V
• Number of Channels: 16
• Maximum Data Rate: 400 Mbps
• Input/Output Type: Tri-State
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LCX16244MEA has a total of 48 pins, which are distributed as follows:

• Pins 1 to 8: Channel 1 Inputs/Outputs
• Pins 9 to 16: Channel 2 Inputs/Outputs
• ...
• Pins 41 to 48: Channel 16 Inputs/Outputs

Functional Features

• Bidirectional Logic Level Translation: Allows seamless communication between devices operating at different voltage levels.
• Tri-State Outputs: Provides the ability to disable the outputs, allowing multiple devices to share a common bus without interference.
• High-Speed Operation: Supports data rates up to 400 Mbps, enabling fast and efficient data transfer.

Advantages

• Wide Supply Voltage Range: Can operate with low-voltage systems, making it suitable for battery-powered applications.
• Bi-directional Capability: Enables bidirectional communication between devices with different voltage levels, reducing the need for additional level-shifting components.
• Compact Package: The 48-pin TSSOP package offers a small footprint, saving valuable board space.

Disadvantages

• Limited Channel Count: The 74LCX16244MEA provides 16 channels, which may not be sufficient for applications requiring a higher number of I/O lines.
• Temperature Limitations: The operating temperature range of -40°C to +85°C may restrict its use in extreme temperature environments.

Working Principles

The 74LCX16244MEA utilizes a combination of MOSFETs and CMOS technology to achieve logic level translation. It employs a voltage level shifting technique that allows bidirectional data transfer between devices operating at different voltage domains. The tri-state outputs enable the device to be connected to a shared bus without causing contention or signal degradation.

Detailed Application Field Plans

The 74LCX16244MEA is commonly used in various applications, including:

1. Microcontroller Interfacing: Enables communication between microcontrollers operating at different voltage levels.
2. Memory Interfaces: Facilitates data transfer between memory modules with varying voltage requirements.
3. Communication Systems: Allows seamless integration of devices operating at different logic levels, such as UART, SPI, or I2C interfaces.
4. Industrial Automation: Provides level translation capabilities for sensors, actuators, and control systems.

Detailed and Complete Alternative Models

1. SN74LVC4245A: Similar bidirectional level translator with 8 channels and a wider supply voltage range (1.2V to 5.5V).
2. TXB0108: Octal bidirectional level shifter with 8 channels and support for voltage translation between 1.2V and 3.6V.
3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator with two channels and a supply voltage range of 1.2V to 3.6V.

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