74LCXR2245MSA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Bi-directional, Non-inverting, Voltage Translation
• Package: Mini Small Outline Package (MSOP)
• Essence: High-speed, Low-voltage, Logic-level Translation
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage: 1.65V to 3.6V
• Logic Voltage Levels: 1.8V, 2.5V, 3.3V
• Number of Channels: 8
• Input/Output Type: CMOS
• Data Rate: Up to 400 Mbps
• Propagation Delay: 4 ns (Max)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LCXR2245MSA has a total of 20 pins, which are assigned as follows:

• Pins 1 to 8: Channel A Data Input/Output (DIO) Pins
• Pins 9 to 16: Channel B DIO Pins
• Pin 17: Output Enable (OE) Pin
• Pin 18: VCC Supply Voltage Pin
• Pin 19: Ground (GND) Pin
• Pin 20: OE Control Input Pin

Functional Features

• Bi-directional voltage translation between two logic levels.
• Non-inverting operation preserves the logic state of the input signals.
• Wide supply voltage range allows compatibility with various systems.
• High-speed data transmission up to 400 Mbps.
• Low propagation delay ensures minimal signal distortion.
• Output enable pin for disabling the outputs when not in use.

Advantages and Disadvantages

Advantages: - Provides seamless translation between different logic voltage levels. - Supports bidirectional communication, enabling data transfer in both directions. - Compact MSOP package saves board space. - Wide operating temperature range allows usage in various environments.

Disadvantages: - Limited to CMOS input/output type, not compatible with other logic families. - Requires external pull-up or pull-down resistors for proper operation. - May experience signal degradation at higher frequencies.

Working Principles

The 74LCXR2245MSA is a level shifter and bus transceiver IC designed to translate logic-level signals between two different voltage domains. It utilizes a combination of MOSFETs and control circuitry to achieve bi-directional voltage translation without inverting the logic states.

The device operates by monitoring the input voltage levels and translating them to the corresponding output voltage levels. The OE pin controls the enable/disable state of the outputs, allowing the user to control the direction of data flow.

Detailed Application Field Plans

The 74LCXR2245MSA finds applications in various fields where voltage translation between different logic levels is required. Some common application areas include:

1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
2. Mixed Voltage Systems: Enables integration of components with varying voltage requirements in mixed voltage systems.
3. I/O Expansion: Allows interfacing with peripherals operating at different logic levels, such as sensors, displays, and memory devices.
4. Bus Transceivers: Used in bidirectional data buses, such as I2C, SPI, or UART, to ensure compatibility between devices with different voltage levels.

Detailed and Complete Alternative Models

1. SN74LVC8T245PW: 8-bit dual-supply bus transceiver with configurable voltage translation.
2. TXB0108PWR: 8-bit bidirectional voltage-level translator with automatic direction sensing.
3. PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage-level translator.

These alternative models offer similar functionality and can be considered as alternatives to the 74LCXR2245MSA based on specific application requirements.

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