SN74LVT240ADWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics:
  • Low Voltage TTL (LVT) technology
  • Octal buffer/line driver with 3-state outputs
  • Bidirectional voltage translation
  • High-speed operation
  • Wide operating voltage range
• Package: SOIC (Small Outline Integrated Circuit)
• 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
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Input Capacitance: 4pF
• Output Capacitance: 8pF
• Propagation Delay Time: 2.9ns (max)
• Output Current: ±12mA

Detailed Pin Configuration

The SN74LVT240ADWR has a total of 20 pins arranged as follows:

+---+--+---+ A1 -|1 +--+ 20|- VCC A2 -|2 |- B1 A3 -|3 |- B2 A4 -|4 |- B3 A5 -|5 |- B4 A6 -|6 |- B5 A7 -|7 |- B6 A8 -|8 |- B7 GND -|9 |- B8 OE -|10 |- Y1 Y2 -|11 |- OE# Y3 -|12 |- Y3 Y4 -|13 |- Y4 Y5 -|14 |- Y5 Y6 -|15 |- Y6 Y7 -|16 |- Y7 Y8 -|17 |- GND B9 -|18 |- A9 B10 -|19 |- A10 GND -|20 |- A11 +---+--+---+

Functional Features

• Bidirectional voltage translation between two voltage domains
• High-speed operation allows for efficient data transfer
• 3-state outputs enable bus sharing and reduce contention
• Wide operating voltage range provides flexibility in different applications

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices operating at different voltage levels - Supports bidirectional data transmission - High-speed operation ensures efficient data transfer - 3-state outputs allow for bus sharing and reduce conflicts

Disadvantages: - Limited to a specific voltage range (1.65V to 3.6V) - May introduce propagation delay in signal transmission

Working Principles

The SN74LVT240ADWR is designed to translate logic levels between two voltage domains. It uses low voltage TTL (LVT) technology to achieve bidirectional voltage translation. The inputs (A1-A11) are connected to one voltage domain, while the outputs (Y1-Y8) are connected to another voltage domain. The direction of translation is controlled by the Output Enable (OE) pin.

When OE is high, the device is enabled, and the inputs are translated to the outputs according to the voltage levels of the respective domains. When OE is low, the outputs are in a high-impedance state, allowing other devices to drive the bus.

Detailed Application Field Plans

The SN74LVT240ADWR is commonly used in various applications where logic level translation is required. Some of the typical application fields include:

1. Microcontroller interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Mixed-voltage systems: It facilitates data transfer between components with different voltage requirements, such as sensors, displays, and memory devices.
3. Communication interfaces: It allows for seamless integration of devices with different logic levels, such as UART, SPI, and I2C interfaces.
4. Battery-powered devices: It can be used to interface low-power microcontrollers with higher voltage peripherals, extending battery life.

Detailed and Complete Alternative Models

• SN74LVC240ADWR
• SN74LVTH240ADWR
• SN74LVX240ADWR
• SN74AVC240ADWR
• SN74AHC240ADWR

These alternative models offer similar functionality and characteristics, but may have variations in voltage ranges, speed, or package options. It is important to select the appropriate model based on specific application requirements.

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