MC74ACT646DWG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic Level Shifter
• Characteristics: High-speed, Non-inverting, Octal Bus Transceiver
• Package: SOIC-24
• Essence: This IC is designed to shift logic levels between different voltage domains in digital systems.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Logic Family: ACT
• Number of Channels: 8
• Input Voltage Range: 2.0V to 6.0V
• Output Voltage Range: 2.0V to 6.0V
• Propagation Delay: 7 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC74ACT646DWG has a total of 24 pins, which are assigned as follows:

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

Functional Features

• Non-inverting bidirectional data transmission between different voltage domains.
• High-speed operation suitable for use in fast digital systems.
• Output enable control allows for easy bus sharing and multiplexing.
• Direction control pin enables flexible data flow control.

Advantages and Disadvantages

Advantages: - High-speed operation ensures efficient data transfer. - Non-inverting nature preserves signal integrity. - Output enable and direction control pins provide flexibility in system design.

Disadvantages: - Limited to a maximum input/output voltage range of 2.0V to 6.0V. - Requires careful consideration of power supply voltage compatibility.

Working Principles

The MC74ACT646DWG is based on advanced CMOS technology, which allows it to operate at high speeds while consuming low power. It utilizes non-inverting circuitry to ensure that the logic levels are preserved during data transmission. The output enable and direction control pins provide additional control over the data flow, allowing for efficient bus sharing and multiplexing.

Detailed Application Field Plans

The MC74ACT646DWG is commonly used in various digital systems where logic level shifting is required. Some typical application fields include:

1. Microcontroller interfacing with different voltage peripherals.
2. Communication systems involving multiple voltage domains.
3. Data acquisition systems with mixed voltage sensors.
4. Industrial automation and control systems.

Detailed and Complete Alternative Models

1. SN74ACT646: Similar octal bus transceiver from Texas Instruments.
2. CD74ACT646: Octal bus transceiver from Texas Instruments with slightly different pin configuration.
3. 74HCT646: Octal bus transceiver from NXP Semiconductors, compatible with HCT logic family.

These alternative models offer similar functionality and can be considered as substitutes for the MC74ACT646DWG in various applications.

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