SN74ABT821ADWRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-power, bidirectional voltage translation
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Translates signals between different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 3.8 ns (typical)
• Maximum Operating Frequency: 200 MHz

Detailed Pin Configuration

The SN74ABT821ADWRG4 has a total of 20 pins. The pin configuration is as follows:

1. OE1 (Output Enable Input 1)
2. A1 (Data Input/Output 1)
3. B1 (Data Input/Output 2)
4. GND (Ground)
5. B2 (Data Input/Output 3)
6. A2 (Data Input/Output 4)
7. OE2 (Output Enable Input 2)
8. VCC (Supply Voltage)
9. Y1 (Translated Data Output 1)
10. Y2 (Translated Data Output 2)
11. Y3 (Translated Data Output 3)
12. Y4 (Translated Data Output 4)
13. GND (Ground)
14. Y5 (Translated Data Output 5)
15. Y6 (Translated Data Output 6)
16. Y7 (Translated Data Output 7)
17. Y8 (Translated Data Output 8)
18. VCC (Supply Voltage)
19. B3 (Data Input/Output 5)
20. A3 (Data Input/Output 6)

Functional Features

• Bidirectional voltage translation between two different voltage levels
• High-speed operation with low propagation delay time
• Supports a wide supply voltage range
• Output enable inputs for controlling the direction of translation
• ESD protection on all inputs and outputs

Advantages and Disadvantages

Advantages: - Allows interfacing between devices operating at different voltage levels - Fast signal translation with minimal delay - Wide supply voltage range provides flexibility in various applications - ESD protection ensures reliability

Disadvantages: - Limited number of translated data outputs (8 in total) - Requires careful consideration of input and output voltage levels to prevent damage

Working Principles

The SN74ABT821ADWRG4 is designed to translate signals between two different voltage levels. It uses a combination of CMOS and TTL technologies to achieve high-speed operation with low power consumption. The device has separate input/output banks, allowing bidirectional translation.

The direction of translation is controlled by the output enable inputs (OE1 and OE2). When OE1 is low, the device translates signals from bank A to bank B. Conversely, when OE2 is low, the translation occurs from bank B to bank A. When both OE1 and OE2 are high, the device is in a high-impedance state, isolating the input and output banks.

Detailed Application Field Plans

The SN74ABT821ADWRG4 can be used in various applications that require voltage level translation. Some potential application fields include:

1. Microcontroller interfacing: Translating signals between microcontrollers operating at different voltage levels.
2. Communication systems: Enabling communication between devices with different logic voltage levels, such as UART, SPI, or I2C interfaces.
3. Industrial automation: Facilitating communication between different modules or subsystems operating at different voltage levels.
4. Battery-powered devices: Allowing integration of components with different voltage requirements in portable electronics.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Single-bit dual-supply level translator with 3-state outputs.
2. TXB0108PWR: 8-bit bidirectional voltage-level translator with automatic direction sensing.
3. PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage-level translator.

These alternative models offer similar functionality and can be considered as alternatives to the SN74ABT821ADWRG4 based on specific application requirements.

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