SN74ALVTH16821VR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-power, voltage-level shifting
• Package: 56-pin Very Thin Quad Flat Package (VQFN)
• Essence: Translates signals between different voltage levels
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 2.5ns (typical)
• Output Drive Strength: ±12mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The SN74ALVTH16821VR has a total of 56 pins, which are organized as follows:

• Pins 1-8: Port A Inputs/Outputs
• Pins 9-16: Port B Inputs/Outputs
• Pins 17-24: Port C Inputs/Outputs
• Pins 25-32: Port D Inputs/Outputs
• Pins 33-40: Port E Inputs/Outputs
• Pins 41-48: Port F Inputs/Outputs
• Pins 49-56: Power and Ground Pins

Functional Features

• Bidirectional voltage-level translation between two independent voltage domains
• Supports translation between 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V systems
• Provides non-inverting level shifting with high-speed operation
• Low power consumption and wide operating temperature range

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - High-speed operation enables efficient signal translation - Low power consumption reduces energy usage - ESD protection ensures robustness against electrostatic discharge

Disadvantages: - Limited to 56-pin package, may not be suitable for space-constrained applications - Not compatible with voltage levels outside the specified range

Working Principles

The SN74ALVTH16821VR utilizes a combination of CMOS and BiCMOS technologies to achieve voltage-level translation. It employs a series of level-shifting circuits that allow bidirectional communication between two voltage domains. The input signals are detected and converted to the corresponding output voltage levels, ensuring seamless integration between different logic families.

Detailed Application Field Plans

The SN74ALVTH16821VR is commonly used in various applications where voltage-level translation is required. Some typical application fields include:

1. Microcontrollers and microprocessors interfacing with different voltage peripherals
2. Communication systems involving multiple voltage domains
3. Industrial automation and control systems
4. Portable electronic devices with mixed-voltage components
5. Automotive electronics for signal translation between different subsystems

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Single-bit dual-supply voltage-level translator
2. SN74AVC4T245PW: Quad-bit dual-supply voltage-level translator
3. SN74AHCT125N: Quad-bit non-inverting buffer with 3-state outputs
4. SN74LVCH16244ADGGR: 16-bit non-inverting buffer/line driver with 3-state outputs
5. SN74LVC8T245PWR: Octal-bit dual-supply voltage-level translator

These alternative models offer similar functionality and can be considered as substitutes for the SN74ALVTH16821VR based on specific application requirements.

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