MC74AC245N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal level shifting and voltage translation
• Characteristics: High-speed, octal bus transceiver, non-inverting
• Package: DIP (Dual In-line Package)
• Essence: Transfers data between two bidirectional buses with different voltage levels
• Packaging/Quantity: Available in tubes of 25 units or reels of 2500 units

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 5ns (typical)
• Output Drive Capability: ±24mA

Detailed Pin Configuration

The MC74AC245N has a total of 20 pins. The pin configuration is as follows:

1. OE (Output Enable) - Output control pin
2. A1-A8 (Input/Output) - Bidirectional data bus pins
3. B1-B8 (Input/Output) - Bidirectional data bus pins
4. GND (Ground) - Ground reference
5. VCC (Power Supply) - Positive power supply
6. DIR (Direction Control) - Direction control pin

Functional Features

• High-speed operation allows for efficient data transfer
• Non-inverting feature preserves the logic state of the input signal
• Bidirectional capability enables data transmission in both directions
• Output enable pin provides control over the output state
• Direction control pin determines the direction of data flow

Advantages and Disadvantages

Advantages: - High-speed operation ensures fast data transfer - Non-inverting feature maintains signal integrity - Bidirectional capability allows for versatile data transmission - Output enable pin provides flexibility in controlling the output state

Disadvantages: - Limited voltage range (2V to 6V) - Propagation delay may affect timing-sensitive applications

Working Principles

The MC74AC245N is an octal bus transceiver that facilitates bidirectional data transfer between two buses with different voltage levels. It operates by using a direction control pin to determine the direction of data flow. The non-inverting feature ensures that the logic state of the input signal is preserved during the translation process. The output enable pin allows for control over the output state, enabling or disabling the data transmission.

Detailed Application Field Plans

The MC74AC245N is commonly used in various applications, including:

1. Microcontroller interfacing
2. Level shifting in communication systems
3. Data transfer between different voltage domains
4. Bus buffering and isolation
5. Industrial automation systems
6. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the MC74AC245N are:

1. SN74LV245A - Low-voltage octal bus transceiver
2. CD74HCT245 - High-speed CMOS octal bus transceiver
3. 74HC245 - High-speed CMOS octal bus transceiver
4. 74LS245 - Low-power Schottky octal bus transceiver
5. CD4050 - Hex non-inverting buffer/converter

These alternative models offer similar functionality and can be used as replacements based on specific requirements.

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