74LCX541BQX

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: Low Voltage, High-Speed CMOS Technology
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Bidirectional Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.3V to 3.6V
• High-Level Input Voltage: 2.0V (Minimum), 3.6V (Maximum)
• Low-Level Input Voltage: -0.3V (Minimum), 0.8V (Maximum)
• High-Level Output Voltage: 2.4V (Minimum), VCC (Maximum)
• Low-Level Output Voltage: 0V (Minimum), 0.4V (Maximum)
• Maximum Input Current: ±10mA
• Maximum Output Current: ±24mA
• Propagation Delay Time: 2.1ns (Typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LCX541BQX IC has a total of 20 pins, which are arranged as follows:

┌───┬───┐ OE ─┤1 └─ 20┬─ VCC A1 ─┤2 19├─ GND A2 ─┤3 18├─ B1 A3 ─┤4 17├─ B2 A4 ─┤5 16├─ B3 A5 ─┤6 15├─ B4 A6 ─┤7 14├─ B5 A7 ─┤8 13├─ B6 G1 ─┤9 12├─ B7 G2 ─┤10 11├─ B8 └───────┘

Functional Features

• Bidirectional buffer/line driver with 3-state outputs
• Inputs and outputs are 5V tolerant, allowing direct interfacing with 5V systems
• Provides non-inverting level shifting between 3.3V and 5V logic levels
• Supports high-speed data transmission with low propagation delay time
• Enables easy expansion of bus lines in digital systems

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - 5V tolerance simplifies interfacing with different logic levels - High-speed CMOS technology ensures fast data transmission - Non-inverting buffer minimizes signal distortion - Compact TSSOP package saves board space

Disadvantages: - Limited output current may restrict use in certain applications - Not suitable for high-voltage environments

Working Principles

The 74LCX541BQX is designed to shift logic levels bidirectionally between 3.3V and 5V systems. It acts as a buffer/line driver, amplifying and transmitting digital signals without inverting their logic states. The IC features 3-state outputs, which can be enabled or disabled using the Output Enable (OE) pin. When disabled, the outputs enter a high-impedance state, allowing multiple devices to share a common bus.

Detailed Application Field Plans

The 74LCX541BQX is commonly used in various digital systems that require level shifting between 3.3V and 5V logic levels. Some typical application fields include:

1. Microcontroller interfacing with 5V peripherals
2. Communication interfaces (UART, SPI, I2C) between different voltage domains
3. Memory address and data bus expansion in embedded systems
4. Signal buffering in mixed-voltage systems
5. Level translation in battery-powered devices

Detailed and Complete Alternative Models

• SN74LVC541A: Octal Buffer/Line Driver with 3-State Outputs
• MC74LCX541: Low Voltage CMOS Octal Buffer/Line Driver
• CD74HC541: High-Speed CMOS Logic Octal Buffer/Line Driver
• 74HCT541: Octal Buffer/Line Driver with 3-State Outputs

These alternative models offer similar functionality and can be considered as replacements for the 74LCX541BQX in different applications.

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