74LVT240D,112

Basic Information 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 between different logic levels
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic level translation for interfacing between devices operating at different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• High-Level Input Voltage (VIH): 2.0V to VCC + 0.5V
• Low-Level Input Voltage (VIL): -0.5V to 0.8V
• High-Level Output Voltage (VOH): 2.4V (min) at IOH = -12mA
• Low-Level Output Voltage (VOL): 0.4V (max) at IOL = 24mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LVT240D,112 IC has a total of 20 pins arranged as follows:

+--\/--+ A1 |1 20| VCC A2 |2 19| OE# B1 |3 18| I/O1 B2 |4 17| I/O2 B3 |5 16| I/O3 B4 |6 15| I/O4 GND|7 14| I/O5 A3 |8 13| I/O6 A4 |9 12| I/O7 A5 |10 11| I/O8 +------+

Functional Features

• Bidirectional voltage translation: Allows interfacing between devices operating at different logic levels.
• 3-state outputs: Enables multiple devices to share a common bus without interference.
• Low voltage operation: Supports voltage levels as low as 1.2V, making it suitable for low-power applications.

Advantages and Disadvantages

Advantages

• Efficient voltage level translation between different logic families.
• High-speed operation with minimal propagation delay.
• 3-state outputs provide flexibility in bus sharing applications.

Disadvantages

• Limited voltage range: The IC is not suitable for translating very high voltage levels.
• Requires careful consideration of input and output voltage levels to prevent damage or incorrect operation.

Working Principles

The 74LVT240D,112 is designed using Low Voltage TTL (LVT) technology. It utilizes a combination of MOSFETs and bipolar transistors to achieve efficient voltage level translation. The IC operates by monitoring the input voltage levels and providing corresponding output voltage levels based on the specified logic thresholds.

Detailed Application Field Plans

The 74LVT240D,112 is commonly used in various applications where voltage level translation is required. Some typical application fields include: - Interfacing between microcontrollers and peripheral devices operating at different voltage levels. - Level shifting in communication interfaces such as UART, SPI, and I2C. - Bus sharing between devices with different logic families.

Detailed and Complete Alternative Models

Some alternative models that can be considered for voltage level translation are: - 74LVX245: Octal bus transceiver with 3-state outputs. - SN74LVC1T45: Single-bit dual-supply bus transceiver. - TXB0108: 8-bit bidirectional voltage-level translator.

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