MM74HC245ASJX

Product Overview

• Category: Integrated Circuit
• Use: Signal Level Shifter
• Characteristics: High-Speed, Octal Bus Transceiver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The MM74HC245ASJX is a high-speed octal bus transceiver that is designed to shift signals between different voltage levels. It can be used in various applications where signal level shifting is required.
• Packaging/Quantity: The MM74HC245ASJX is available in a standard SOIC package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to Vcc
• Output Voltage: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 11 ns (typical)
• Output Current: ±6 mA
• Input Capacitance: 3 pF (typical)

Pin Configuration

The MM74HC245ASJX has a total of 20 pins arranged as follows:

__ __ A1 |1 \__/ 20| Vcc A2 |2 19| B1 A3 |3 18| B2 A4 |4 17| B3 A5 |5 16| B4 A6 |6 15| B5 A7 |7 14| B6 A8 |8 13| B7 GND |9 12| B8 OE |10 11| DIR |__________|

Functional Features

• The MM74HC245ASJX is an octal bus transceiver, which means it can transmit and receive signals on eight different lines simultaneously.
• It operates at high-speed, making it suitable for applications that require fast signal transmission.
• The device has a direction control pin (DIR) that allows bidirectional data flow.
• It also features an output enable pin (OE) that can be used to disable the outputs when not in use.

Advantages and Disadvantages

Advantages: - High-speed operation - Bidirectional data flow capability - Wide operating voltage range - Low power consumption - Compact SOIC package

Disadvantages: - Limited output current capacity - Input and output voltage levels are limited to the supply voltage range

Working Principles

The MM74HC245ASJX works by using internal circuitry to shift the voltage levels of input signals to match the desired output voltage levels. It uses a combination of transistors and logic gates to achieve this level shifting functionality. The direction control pin (DIR) determines the direction of data flow, while the output enable pin (OE) controls the output state.

Detailed Application Field Plans

The MM74HC245ASJX can be used in various applications where signal level shifting is required. Some common application fields include:

1. Microcontroller Interfacing: The device can be used to interface microcontrollers with other devices operating at different voltage levels, such as sensors, displays, or memory modules.

2. Communication Systems: It can be used in communication systems to convert signals between different voltage levels, ensuring compatibility between different components.

3. Industrial Automation: The MM74HC245ASJX can be utilized in industrial automation systems to interface between different control modules and actuators, enabling seamless communication.

4. Data Acquisition: It can be employed in data acquisition systems to shift signals between sensors and data processing units, ensuring accurate and reliable data transfer.

Detailed and Complete Alternative Models

1. SN74HC245N: This is a similar octal bus transceiver from Texas Instruments, offering comparable specifications and functionality.
2. CD74HC245E: Another alternative from Texas Instruments, providing the same functionality with slight variations in package type and dimensions.
3. 74HCT245: This is a CMOS-based octal bus transceiver from NXP Semiconductors, offering improved noise immunity compared to the MM74HC245ASJX.

These alternative models can be considered based on specific requirements and availability.

In conclusion, the MM74HC245ASJX is a high-speed octal bus transceiver that provides signal level shifting capabilities. It offers various advantages such as high-speed operation, bidirectional data flow, and a wide operating voltage range. However, it has limitations in terms of output current capacity and input/output voltage levels. The device finds applications in microcontroller interfacing, communication systems, industrial automation, and data acquisition. Alternative models like SN74HC245N, CD