SN74BCT245N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, Bi-directional, Non-inverting
• Package: DIP (Dual In-line Package)
• Essence: Logic Level Conversion and Signal Transmission
• Packaging/Quantity: Tube, 25 pieces per tube

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 8ns (Max)
• Output Current: ±24mA
• Number of Pins: 20

Detailed Pin Configuration

1. OE (Output Enable) - Active Low Output Enable
2. A1 - Data Input/Output A
3. B1 - Data Input/Output B
4. A2 - Data Input/Output A
5. B2 - Data Input/Output B
6. A3 - Data Input/Output A
7. B3 - Data Input/Output B
8. A4 - Data Input/Output A
9. B4 - Data Input/Output B
10. GND (Ground) - Ground Reference
11. B5 - Data Input/Output B
12. A5 - Data Input/Output A
13. B6 - Data Input/Output B
14. A6 - Data Input/Output A
15. B7 - Data Input/Output B
16. A7 - Data Input/Output A
17. B8 - Data Input/Output B
18. A8 - Data Input/Output A
19. VCC - Positive Power Supply
20. DIR (Direction Control) - Direction Control Input

Functional Features

• Bi-directional data transfer between two different voltage levels
• Non-inverting logic level conversion
• High-speed operation for efficient signal transmission
• Output enable control for flexible usage
• Wide operating temperature range for various environments

Advantages and Disadvantages

Advantages

• Enables seamless communication between devices with different voltage levels
• Provides reliable and efficient signal transmission
• Supports high-speed data transfer
• Easy to use with straightforward pin configuration
• Suitable for a wide range of applications

Disadvantages

• Limited to specific voltage ranges (4.5V to 5.5V)
• Requires careful consideration of input and output voltage levels
• May introduce propagation delay in signal transmission

Working Principles

The SN74BCT245N is designed to facilitate the bidirectional transfer of digital signals between systems operating at different voltage levels. It acts as a level shifter and bus transceiver, converting logic levels from one voltage domain to another without changing the signal polarity.

The direction of data flow is controlled by the DIR pin. When DIR is set to a logic high, data is transferred from the A side to the B side. Conversely, when DIR is set to a logic low, data is transferred from the B side to the A side.

The OE pin allows the user to enable or disable the outputs. When OE is set to a logic low, the outputs are enabled and actively driven. Conversely, when OE is set to a logic high, the outputs are disabled and enter a high-impedance state.

Detailed Application Field Plans

The SN74BCT245N finds applications in various fields where logic level conversion and signal transmission between different voltage domains are required. Some common application areas include:

1. Microcontroller interfacing: Facilitating communication between microcontrollers operating at different voltage levels.
2. Sensor networks: Enabling data exchange between sensors and microcontrollers with varying voltage requirements.
3. Industrial automation: Supporting bidirectional data transfer in industrial control systems.
4. Communication systems: Level shifting signals between different communication protocols and voltage domains.
5. Robotics: Facilitating interconnection between different modules and subsystems.

Detailed and Complete Alternative Models

1. SN74LVC245A: Low Voltage CMOS Octal Bus Transceiver
2. SN74HCT245: High-Speed CMOS Octal Bus Transceiver
3. SN74LVCH245A: Low Voltage CMOS Octal Bus Transceiver with 3-State Outputs
4. SN74ACT245: Octal Bus Transceiver with 3-State Outputs
5. SN74ABT245B: Octal Bus Transceiver with 3-State Outputs

These alternative models offer similar functionality to the SN74BCT245N, but may have different characteristics, specifications, or package options.

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