Encyclopedia Entry: 74LVCH16540ADLRG4

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-voltage, 16-bit bus transceiver
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Transfers data between two different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Number of Bits: 16
• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Levels: 0V to VCC
• Output Voltage Levels: 0V to VCC
• Maximum Operating Frequency: 200 MHz
• Propagation Delay: 2.5 ns (typical)

Detailed Pin Configuration

The 74LVCH16540ADLRG4 has a total of 48 pins, which are divided into four groups: - Group A: Pins 1 to 12 - Group B: Pins 13 to 24 - Group C: Pins 25 to 36 - Group D: Pins 37 to 48

Each group consists of an input side (A1-A12, B1-B12, C1-C12, D1-D12) and an output side (Y1-Y12, Z1-Z12, AA1-AA12, AB1-AB12).

Functional Features

• Bidirectional Data Transfer: Allows data transmission in both directions between two voltage domains.
• Voltage Level Shifting: Converts signals from one voltage level to another, ensuring compatibility between different logic families.
• Output Enable Control: Enables or disables the outputs, providing flexibility in controlling data flow.

Advantages

• High-Speed Operation: Supports fast data transfer rates up to 200 MHz, making it suitable for high-performance applications.
• Low-Voltage Operation: Works with a wide supply voltage range of 1.2V to 3.6V, enabling compatibility with various low-power systems.
• Compact Package: The TSSOP package offers a small footprint, saving board space in densely populated designs.

Disadvantages

• Limited Voltage Range: The IC is not suitable for voltage levels outside the specified range of 1.2V to 3.6V.
• Propagation Delay: Although relatively low at 2.5 ns, the propagation delay can impact timing-sensitive applications.

Working Principles

The 74LVCH16540ADLRG4 utilizes a combination of MOSFETs and CMOS technology to achieve bidirectional level shifting. It employs a voltage translation technique that allows data to be transferred between two voltage domains while maintaining signal integrity and minimizing power consumption.

Detailed Application Field Plans

The 74LVCH16540ADLRG4 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: Supports level shifting in serial communication interfaces such as UART, SPI, and I2C. 4. Industrial Automation: Provides voltage level conversion in control systems and PLCs.

Detailed and Complete Alternative Models

1. SN74LVC8T245: 8-bit bidirectional voltage-level translator with automatic direction sensing.
2. TXB0108: 8-bit bidirectional voltage-level translator with integrated auto-direction sensing.
3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator.

Note: This is not an exhaustive list, and there are several other alternative models available in the market.

Word count: 486 words