SN74BCT29821NT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, non-inverting, 8-bit bidirectional level shifter
• Package: DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit)
• Essence: Transfers logic-level signals between devices operating at different voltage levels
• Packaging/Quantity: Available in reels or tubes, quantity varies depending on supplier

Specifications

• Number of Bits: 8
• Input Voltage Range: 2V to 6V
• Output Voltage Range: 2V to 6V
• Propagation Delay Time: 5.5ns (typical)
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: 4.5V to 5.5V
• Supply Current: 10mA (typical)

Detailed Pin Configuration

The SN74BCT29821NT has a total of 20 pins. The pin configuration is as follows:

1. OE (Output Enable)
2. A0 (Input A0)
3. A1 (Input A1)
4. A2 (Input A2)
5. A3 (Input A3)
6. A4 (Input A4)
7. A5 (Input A5)
8. A6 (Input A6)
9. A7 (Input A7)
10. VCC (Supply Voltage)
11. B0 (Input B0)
12. B1 (Input B1)
13. B2 (Input B2)
14. B3 (Input B3)
15. B4 (Input B4)
16. B5 (Input B5)
17. B6 (Input B6)
18. B7 (Input B7)
19. GND (Ground)
20. Y (Output)

Functional Features

• Bidirectional level shifting: Allows for the translation of logic-level signals in both directions.
• Non-inverting: The output signal maintains the same logic state as the input signal.
• High-speed operation: The SN74BCT29821NT is designed for fast data transfer between devices.

Advantages and Disadvantages

Advantages: - Supports bidirectional level shifting, making it versatile for various applications. - Non-inverting nature ensures compatibility with different logic families. - High-speed operation allows for efficient data transfer.

Disadvantages: - Limited voltage range (2V to 6V) may not be suitable for all applications. - Requires external pull-up or pull-down resistors for proper operation.

Working Principles

The SN74BCT29821NT operates by using a combination of MOSFETs and CMOS technology to shift logic-level signals between devices operating at different voltage levels. It utilizes a control signal (OE) to enable or disable the output, allowing bidirectional communication. The non-inverting nature of the IC ensures that the output signal matches the logic state of the input signal.

Detailed Application Field Plans

The SN74BCT29821NT can be used in various applications where logic-level translation is required. Some potential application fields include:

1. Microcontroller interfacing: The IC can be used to interface microcontrollers operating at different voltage levels.
2. Communication systems: It can be employed in communication systems to translate logic signals between different components.
3. Sensor networks: The SN74BCT29821NT can facilitate communication between sensors and microcontrollers operating at different voltage levels.

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the SN74BCT29821NT are:

1. TXS0108E: An 8-bit bidirectional voltage-level translator with automatic direction sensing.
2. PCA9306: A dual bidirectional I2C-bus and SMBus voltage-level translator.
3. SN74LVC4245A: An 8-bit dual-supply bus transceiver with configurable voltage translation.

These alternative models offer similar features and can be considered as substitutes for the SN74BCT29821NT in various applications.

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