PI74ALVCHR162245AEX

Product Overview

• Category: Integrated Circuit
• Use: Logic Level Translator
• Characteristics: High-speed, low-voltage, bidirectional translation between two voltage levels
• Package: 48-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage domains while maintaining signal integrity
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 1.2V - 3.6V
• Input Voltage Levels: 0V - VCC
• Output Voltage Levels: 0V - VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 2.5ns (typical)
• Output Drive Strength: ±24mA

Detailed Pin Configuration

The PI74ALVCHR162245AEX has a total of 48 pins, which are organized as follows:

• Pins 1-8: Port A Data Inputs/Outputs
• Pins 9-16: Port B Data Inputs/Outputs
• Pins 17-24: Port C Data Inputs/Outputs
• Pins 25-32: Port D Data Inputs/Outputs
• Pins 33-40: Port E Data Inputs/Outputs
• Pins 41-48: Control and Power Pins

Functional Features

• Bidirectional voltage level translation between two voltage domains
• Supports high-speed data transmission
• Automatic direction control based on the voltage level of the control pin
• Provides voltage isolation between input and output sides
• Low power consumption
• ESD protection on all inputs and outputs

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Wide supply voltage range enables compatibility with various systems - Bidirectional translation simplifies circuit design - ESD protection ensures reliability in harsh environments

Disadvantages: - Limited number of data channels (5 ports) - Requires careful consideration of voltage levels to avoid signal distortion

Working Principles

The PI74ALVCHR162245AEX utilizes a combination of CMOS and BiCMOS technologies to achieve bidirectional voltage level translation. It consists of multiple input/output ports, each capable of translating signals between two voltage domains. The direction of translation is determined by the voltage level applied to the control pin.

When the control pin is set to a logic high level, the device translates signals from the A-side voltage domain to the B-side voltage domain. Conversely, when the control pin is set to a logic low level, the translation occurs in the opposite direction.

The integrated circuit incorporates level-shifting circuitry that ensures proper voltage translation while maintaining signal integrity. It also provides ESD protection on all inputs and outputs, safeguarding against electrostatic discharge events.

Detailed Application Field Plans

The PI74ALVCHR162245AEX is commonly used in various applications where voltage level translation is required. Some typical application fields include:

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: Allows for seamless integration of devices operating at different voltage domains in communication networks.
4. Industrial Automation: Supports voltage level translation in industrial control systems, ensuring compatibility between different components.
5. Consumer Electronics: Used in portable devices, such as smartphones and tablets, to interface between different voltage domains.

Detailed and Complete Alternative Models

1. SN74LVC1T45: Single-bit dual-supply bus transceiver with configurable voltage translation.
2. TXB0108: 8-bit bidirectional voltage-level translator with automatic direction control.
3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator.

These alternative models offer similar functionality to the PI74ALVCHR162245AEX and can be considered as alternatives based on specific application requirements.

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