MC74AC245DTR2

Product Overview

Category

MC74AC245DTR2 belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a bidirectional octal bus transceiver.

Characteristics

• High-speed operation
• Wide voltage range
• Low power consumption
• Schmitt trigger inputs
• Balanced propagation delay and transition times
• TTL-compatible inputs and outputs

Package

MC74AC245DTR2 is available in a TSSOP-20 package.

Essence

The essence of MC74AC245DTR2 lies in its ability to provide bidirectional communication between two buses with different voltage levels.

Packaging/Quantity

MC74AC245DTR2 is typically packaged in reels, with 2500 units per reel.

Specifications

• Supply Voltage: 2.0V to 6.0V
• Input Voltage: -0.5V to VCC + 0.5V
• Output Voltage: -0.5V to VCC + 0.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 8ns
• Maximum Input Capacitance: 10pF
• Maximum Output Current: ±24mA

Detailed Pin Configuration

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

Functional Features

• Bidirectional data transfer between two buses
• Direction control using the DIR pin
• Output enable/disable using the OE pin
• Schmitt trigger inputs for noise immunity
• TTL-compatible inputs and outputs for easy integration with other ICs

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer
• Wide voltage range enables compatibility with various systems
• Low power consumption reduces energy usage
• Schmitt trigger inputs provide noise immunity, ensuring reliable operation
• Balanced propagation delay and transition times enhance signal integrity
• TTL-compatible inputs and outputs facilitate integration with other ICs

Disadvantages

• Limited number of input/output pins restricts the number of connections that can be made simultaneously
• TSSOP package may require careful handling during assembly to avoid damage

Working Principles

MC74AC245DTR2 works by receiving data from one bus and transmitting it to another bidirectionally. The direction of data flow is controlled by the DIR pin. When DIR is high, data is transmitted from Bus A to Bus B, and when DIR is low, data is transmitted from Bus B to Bus A. The OE pin is used to enable or disable the outputs. When OE is low, the outputs are enabled, allowing data transmission. Conversely, when OE is high, the outputs are disabled, preventing data transmission.

Detailed Application Field Plans

MC74AC245DTR2 finds applications in various fields, including:

1. Communication systems
2. Data acquisition systems
3. Industrial automation
4. Automotive electronics
5. Consumer electronics

In communication systems, it can be used for bus interface between different modules. In data acquisition systems, it enables bidirectional data transfer between sensors and microcontrollers. In industrial automation, it facilitates communication between different control units. In automotive electronics, it can be utilized for bus communication in vehicle networks. In consumer electronics, it allows for data exchange between different peripherals.

Detailed and Complete Alternative Models

1. SN74AC245: Similar bidirectional octal bus transceiver from Texas Instruments.
2. 74HC245: Octal bus transceiver with similar functionality from NXP Semiconductors.
3. CD74HCT245: High-speed CMOS octal bus transceiver from Texas Instruments.
4. 74F245: Fast octal bus transceiver with tri-state outputs from Fairchild Semiconductor.

These alternative models provide similar functionality to MC74AC245DTR2 and can be considered as substitutes based on specific requirements and availability.

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