74LVC821ABQ,115

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: Low-voltage CMOS device, high-speed operation, wide voltage range compatibility
• Package: TSSOP-24
• Essence: Logic level translation between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-level Input Voltage (VIH): 2.3V to VCC + 0.3V
• Low-level Input Voltage (VIL): -0.3V to 0.8V
• High-level Output Voltage (VOH): VCC - 0.4V
• Low-level Output Voltage (VOL): 0.4V
• Maximum Operating Frequency: 100 MHz
• Propagation Delay: 3.9 ns (typical)

Detailed Pin Configuration

The 74LVC821ABQ,115 IC has a total of 24 pins arranged as follows:

___________ | | 1 | U1 | 24 |___________|

Pin Description:

1. A1: Input A1
2. B1: Input B1
3. GND: Ground
4. B2: Input B2
5. A2: Input A2
6. OE: Output Enable
7. Y1: Output Y1
8. Y2: Output Y2
9. GND: Ground
10. VCC: Power Supply
11. A3: Input A3
12. B3: Input B3
13. GND: Ground
14. B4: Input B4
15. A4: Input A4
16. OE: Output Enable
17. Y3: Output Y3
18. Y4: Output Y4
19. GND: Ground
20. VCC: Power Supply
21. A5: Input A5
22. B5: Input B5
23. GND: Ground
24. B6: Input B6

Functional Features

• Logic level translation between 1.8V and 5V voltage domains
• Bidirectional voltage translation with automatic direction sensing
• High-speed operation suitable for various applications
• Supports wide voltage range compatibility
• Low power consumption
• Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages: - Wide voltage range compatibility allows interfacing between different logic families - High-speed operation enables efficient data transfer - Automatic direction sensing simplifies the design process - Low power consumption reduces energy requirements

Disadvantages: - Limited to voltage translation between 1.8V and 5V domains - Not suitable for applications requiring translation between other voltage levels

Working Principles

The 74LVC821ABQ,115 is a logic level translator IC that facilitates communication between devices operating at different voltage levels. It utilizes a bidirectional voltage translation scheme with automatic direction sensing. The IC detects the direction of data flow and adjusts the voltage levels accordingly.

The device operates by receiving input signals from one voltage domain (e.g., 1.8V) and translating them to the corresponding voltage levels of the target domain (e.g., 5V). It ensures proper signal integrity and compatibility between different logic families.

Detailed Application Field Plans

The 74LVC821ABQ,115 is commonly used in various applications where logic level translation is required. Some of the typical application fields include:

1. Microcontroller interfacing with different voltage peripherals
2. Communication interfaces between devices operating at different voltage levels
3. Sensor networks requiring voltage level compatibility
4. Battery-powered systems with mixed voltage domains
5. Industrial automation and control systems

Detailed and Complete Alternative Models

1. SN74LVC821APWR: TSSOP-24 package, similar specifications
2. 74LVC821AD: SOIC-24 package, similar functionality
3. MC74LVC821ADG: TSSOP-24 package, comparable performance

These alternative models offer similar logic level translation capabilities and can be considered as substitutes for the 74LVC821ABQ,115 in various applications.

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