PI74ALVCH16245A

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: Bi-directional voltage level translation, high-speed operation, low power consumption
• Package: 48-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels in digital systems
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 400MHz
• Propagation Delay: 2.5ns (typical)
• Output Drive Strength: ±24mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The PI74ALVCH16245A has a total of 48 pins, divided into two groups of 24 pins each. The pin configuration is as follows:

• Group A (pins 1-24):

  • Pins 1-12: Data Inputs/Outputs (A1-A12)
  • Pins 13-16: Voltage Control Inputs (DIR1, OE1, DIR2, OE2)
  • Pins 17-24: Ground (GND)

• Group B (pins 25-48):

  • Pins 25-36: Data Inputs/Outputs (B1-B12)
  • Pins 37-40: Voltage Control Inputs (DIR1, OE1, DIR2, OE2)
  • Pins 41-48: Power Supply (VCC)

Functional Features

• Bi-directional voltage level translation between two independent voltage domains
• Supports bidirectional data flow with automatic direction sensing
• High-speed operation allows for seamless integration in fast digital systems
• Low power consumption for energy-efficient designs
• 3-state outputs provide flexibility in bus-oriented applications

Advantages and Disadvantages

Advantages: - Wide supply voltage range enables compatibility with various systems - High-speed operation allows for efficient data transfer - Low power consumption helps reduce overall system power requirements - Bi-directional translation simplifies interface design

Disadvantages: - Limited number of data inputs/outputs (12 per group) - Requires careful consideration of voltage levels to avoid signal distortion or damage

Working Principles

The PI74ALVCH16245A is a bidirectional voltage level translator designed to facilitate communication between digital systems operating at different voltage levels. It utilizes a combination of CMOS and BiCMOS technologies to achieve high-speed operation and low power consumption.

The device features two independent groups of 12 bidirectional buffers, each capable of translating signals between two voltage domains. The direction of data flow is automatically determined based on the voltage control inputs (DIR1, OE1, DIR2, OE2). When enabled, the translator allows data to pass from one domain to the other, while disabling it isolates the two domains.

Detailed Application Field Plans

The PI74ALVCH16245A finds application in various scenarios where voltage level translation is required. Some common use cases include:

1. Interfacing between microcontrollers operating at different voltage levels.
2. Communication between digital devices with incompatible voltage levels.
3. Bridging between legacy and modern digital systems with different voltage requirements.
4. Level shifting in battery-powered portable electronics to optimize power consumption.

Detailed and Complete Alternative Models

1. SN74LVC4245A: Similar bidirectional voltage level translator with 8 channels and a wider supply voltage range.
2. TXB0108: Octal bidirectional voltage-level translator with automatic direction sensing and 8 channels.
3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator with configurable voltage levels.

These alternative models offer similar functionality to the PI74ALVCH16245A and can be considered based on specific application requirements.

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