MC74HCT245ADTR2G

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-Speed, CMOS Logic, 3-State Outputs
• Package: TSSOP-20
• Essence: Transfers data between different voltage levels in digital systems
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

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: 13 ns (typical)
• Output Current: ±6 mA

Detailed Pin Configuration

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

Functional Features

• Bi-directional level shifting between two voltage domains
• 3-state outputs allow multiple devices to share a common bus
• High-speed operation suitable for fast digital systems
• CMOS logic ensures low power consumption

Advantages and Disadvantages

Advantages

• Enables interfacing between different voltage levels in digital systems
• Provides bidirectional data transfer capability
• Supports high-speed operation
• Low power consumption due to CMOS technology

Disadvantages

• Limited output current capacity
• Requires careful consideration of voltage compatibility between input and output domains

Working Principles

The MC74HCT245ADTR2G is a level shifter and bus transceiver IC that allows bidirectional data transfer between two voltage domains. It operates by receiving data from one domain and translating it to the appropriate voltage level for the other domain. The direction of data flow is controlled by the DIR pin. When the DIR pin is set to a specific logic level, the corresponding data inputs/outputs (A1-A8 and B1-B8) are connected to the respective ports (Port A or Port B).

Detailed Application Field Plans

The MC74HCT245ADTR2G is commonly used in various applications where there is a need to interface between different voltage levels. Some typical application fields include: - Microcontroller interfacing with external peripherals operating at different voltage levels - Communication systems involving multiple devices communicating over a shared bus - Level shifting in mixed-voltage digital systems

Detailed and Complete Alternative Models

• SN74HCT245N: DIP-20 package, similar functionality
• 74LVC245APW: TSSOP-20 package, lower power consumption
• CD74HCT245E: PDIP-20 package, compatible functionality

(Note: The above alternative models are provided for reference and may have slight variations in specifications and pin configuration. It is recommended to refer to the respective datasheets for detailed information.)

In conclusion, the MC74HCT245ADTR2G is a high-speed CMOS logic IC used for level shifting and bus transceiver applications. Its bidirectional data transfer capability, 3-state outputs, and compatibility with different voltage domains make it a versatile component in digital systems. However, designers should consider its limited output current capacity and ensure proper voltage compatibility between input and output domains.