MC74VHCT245ADW

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: High-Speed, Low-Power, 8-Bit Bus Transceiver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Bi-directional voltage level shifter/transceiver for interfacing between different logic families
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Logic Family: VHCT (Very High-Speed CMOS)
• Number of Channels: 8
• Input/Output Compatibility: TTL, LVTTL, CMOS
• Maximum Data Rate: 200 Mbps
• Propagation Delay: 6 ns (typical)
• Output Drive Capability: ±24 mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC74VHCT245ADW has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Active low output enable pin
2. DIR (Direction Control) - Controls the direction of data flow
3. A1-A8 (Input/Output) - Bi-directional data bus pins
4. GND (Ground) - Ground reference pin
5. B1-B8 (Input/Output) - Bi-directional data bus pins
6. VCC (Supply Voltage) - Positive supply voltage pin

Functional Features

• Bi-directional data transfer between two buses with different voltage levels
• Automatic direction control based on the DIR pin
• High-speed operation with minimal propagation delay
• Low power consumption
• Wide operating temperature range for versatile applications
• Robust output drive capability for driving capacitive loads

Advantages and Disadvantages

Advantages: - Enables seamless interfacing between different logic families - High-speed operation allows for efficient data transfer - Low power consumption helps in reducing overall system power requirements - Wide operating temperature range ensures reliability in various environments - Robust output drive capability enables driving of capacitive loads

Disadvantages: - Limited to 8-bit data bus width - Requires careful consideration of voltage compatibility between input and output buses

Working Principles

The MC74VHCT245ADW is a bidirectional level shifter/transceiver that facilitates the translation of voltage levels between two buses with different logic families. The direction of data flow is controlled by the DIR pin. When DIR is high, data flows from A1-A8 to B1-B8, and when DIR is low, data flows in the opposite direction.

The device operates on a supply voltage range of 4.5V to 5.5V and is compatible with TTL, LVTTL, and CMOS logic families. It features high-speed operation with minimal propagation delay, allowing for efficient data transfer. The MC74VHCT245ADW also has a robust output drive capability, enabling it to drive capacitive loads.

Detailed Application Field Plans

The MC74VHCT245ADW finds applications in various fields where voltage level shifting and bi-directional data transfer are required. Some potential application areas include:

1. Microcontroller Interfacing: Facilitating communication between microcontrollers operating at different voltage levels.
2. Communication Systems: Enabling data exchange between devices using different logic families, such as UART, SPI, or I2C interfaces.
3. Industrial Automation: Level shifting between control systems and sensors/actuators operating at different voltage levels.
4. Automotive Electronics: Interfacing between different subsystems within a vehicle, such as infotainment systems, engine control units, and sensors.
5. Consumer Electronics: Enabling data transfer between devices with different logic families, such as smartphones, tablets, and peripherals.

Detailed and Complete Alternative Models

1. SN74LVC245A: Low-Voltage CMOS Octal Bus Transceiver
2. CD74HCT245E: High-Speed CMOS Logic Octal Bus Transceiver
3. 74HC245: High-Speed CMOS Logic Octal Bus Transceiver
4. MC74ACT245: Advanced CMOS Octal Bus Transceiver
5. SN74LVCH245A: Low-Voltage CMOS Octal Bus Transceiver

These alternative models offer similar functionality to the MC74VHCT245ADW and can be considered based on specific application requirements.

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