Encyclopedia Entry: 74ALVT162245DGG:51

Product Overview

Category

The 74ALVT162245DGG:51 belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital logic devices.

Use

This product is commonly used in electronic systems for signal transmission and level shifting between different voltage domains. It acts as a bidirectional buffer, allowing data to be transferred between two buses with different voltage levels.

Characteristics

• Bidirectional buffer with 16 channels
• Supports voltage translation from 2.5V to 3.3V
• High-speed operation with low power consumption
• Compatible with various logic families
• Robust ESD protection

Package and Quantity

The 74ALVT162245DGG:51 is available in a surface-mount TSSOP package. Each package contains one IC.

Essence

The essence of this product lies in its ability to facilitate seamless communication between digital systems operating at different voltage levels, ensuring reliable data transfer.

Specifications

• Supply Voltage Range: 2.3V to 3.6V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200MHz
• Propagation Delay: 4.5ns (max)
• Output Drive Strength: ±24mA

Detailed Pin Configuration

The 74ALVT162245DGG:51 has a total of 48 pins, which are assigned as follows:

• Pins 1-8: Channel A Data Inputs/Outputs (A1-A8)
• Pins 9-16: Channel B Data Inputs/Outputs (B1-B8)
• Pins 17-24: Channel Enable Inputs (G1-G8)
• Pins 25-32: Voltage Level Control Inputs (DIR1-DIR8)
• Pins 33-40: Channel A Data Inputs/Outputs (A9-A16)
• Pins 41-48: Channel B Data Inputs/Outputs (B9-B16)

Functional Features

• Bidirectional data transfer between two buses with different voltage levels
• Individual channel enable/disable control
• Direction control for each channel
• High-speed operation with minimal propagation delay
• ESD protection for enhanced reliability

Advantages and Disadvantages

Advantages

• Enables seamless communication between systems operating at different voltage levels
• Supports high-speed data transfer
• Low power consumption
• Robust ESD protection ensures reliability
• Compatible with various logic families

Disadvantages

• Limited to voltage translation between 2.5V and 3.3V domains
• Not suitable for applications requiring voltage translation beyond the specified range

Working Principles

The 74ALVT162245DGG:51 utilizes a combination of MOSFETs and CMOS technology to achieve bidirectional voltage level translation. The direction control inputs (DIR1-DIR8) determine the flow of data between the A and B channels, while the channel enable inputs (G1-G8) allow individual channel selection.

When the direction control input is set to logic high, data flows from the A channels to the B channels, and vice versa when it is set to logic low. The voltage level translation is achieved through the use of level-shifting circuitry, ensuring compatibility between different voltage domains.

Detailed Application Field Plans

The 74ALVT162245DGG:51 finds extensive application in various electronic systems, including but not limited to:

1. Microprocessor and microcontroller interfaces
2. Memory modules and storage devices
3. Communication systems
4. Industrial automation equipment
5. Automotive electronics
6. Consumer electronics

Its ability to interface between different voltage domains makes it a crucial component in systems where data transfer and compatibility are essential.

Detailed Alternative Models

1. SN74LVC245A: This IC offers similar functionality with a wider voltage range (1.65V to 5.5V) and is available in various package options.
2. 74HCT245: A popular alternative with compatibility for TTL logic levels and a broader supply voltage range (4.5V to 5.5V).
3. CD4508: This IC provides bidirectional level shifting capability but operates at lower frequencies compared to the 74ALVT162245DGG:51.

These alternative models offer flexibility in terms of voltage range, logic compatibility, and package options, catering to different application requirements.

In conclusion, the 74ALVT162245DGG:51 is a versatile integrated circuit that enables seamless communication between digital systems operating at different voltage levels. Its high-speed operation, low power consumption, and robust ESD protection make it an ideal choice for a wide range of applications in various industries.