SN74ABT821ANSRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers logic signals between devices operating at different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: ABT
• Number of Channels: 10
• Input Voltage Levels: 2.3V to 3.6V
• Output Voltage Levels: 1.65V to 3.6V
• Propagation Delay: 3.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74ABT821ANSRG4 has a 20-pin SOIC package with the following pin configuration:

Pin 1: A1 Pin 2: B1 Pin 3: Y1 Pin 4: GND Pin 5: A2 Pin 6: B2 Pin 7: Y2 Pin 8: VCC Pin 9: A3 Pin 10: B3 Pin 11: Y3 Pin 12: A4 Pin 13: B4 Pin 14: Y4 Pin 15: A5 Pin 16: B5 Pin 17: Y5 Pin 18: OE# Pin 19: GND Pin 20: Y6

Functional Features

• Provides bidirectional level shifting for up to 10 channels
• Supports voltage translation between 2.3V and 3.6V logic levels
• High-speed operation with low propagation delay
• Low power consumption for energy-efficient applications
• Enables seamless communication between devices operating at different voltage levels

Advantages and Disadvantages

Advantages: - Allows interfacing between devices with different voltage requirements - Fast signal propagation for efficient data transfer - Low power consumption for improved energy efficiency - Compact SOIC package for space-constrained designs

Disadvantages: - Limited to voltage translation within the specified range - Requires careful consideration of input and output voltage levels to avoid damage

Working Principles

The SN74ABT821ANSRG4 is a logic level shifter that facilitates communication between devices operating at different voltage levels. It utilizes a bidirectional circuitry design to ensure seamless signal transfer. The inputs (A1-A5, B1-B5) are connected to devices with one voltage level, while the outputs (Y1-Y6) are connected to devices with another voltage level. The OE# pin controls the direction of data flow.

When the OE# pin is low, the device is enabled, and the logic signals from the A inputs are translated to the corresponding Y outputs. Conversely, when the OE# pin is high, the device is disabled, and the Y outputs are in a high-impedance state.

Detailed Application Field Plans

The SN74ABT821ANSRG4 is commonly used in various applications where logic level shifting is required. Some of the typical application fields include:

1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
2. Sensor Networks: Enables connectivity between sensors and microcontrollers with varying voltage requirements.
3. Communication Interfaces: Supports voltage translation in UART, I2C, SPI, and other serial communication interfaces.
4. Battery-Powered Devices: Helps interface low-power devices with higher voltage systems.
5. Industrial Automation: Allows integration of devices with different logic voltage levels in industrial control systems.

Detailed and Complete Alternative Models

1. SN74ABT821AN: Similar to SN74ABT821ANSRG4 but available in a PDIP package.
2. SN74LVC1T45DBVR: Single-channel logic level shifter with voltage translation between 1.65V and 5.5V.
3. SN74LVCH16244ADGGR: 16-bit bidirectional level shifter with voltage translation between 1.65V and 3.6V.

These alternative models provide similar functionality and can be considered based on specific application requirements.

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