Encyclopedia Entry: 74ACTQ843SCX

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-power, voltage level shifting
• Package: Small Outline Integrated Circuit (SOIC)
• Essence: Translates logic levels between different voltage domains
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Logic Family: ACTQ
• Number of Pins: 20
• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Levels: TTL/CMOS
• Output Voltage Levels: CMOS
• Propagation Delay: 4.5 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74ACTQ843SCX has a total of 20 pins, each serving a specific purpose. The pin configuration is as follows:

1. A1
2. B1
3. GND
4. A2
5. B2
6. VCC
7. OE
8. Y1
9. Y2
10. GND
11. A3
12. B3
13. VCC
14. A4
15. B4
16. GND
17. Y3
18. Y4
19. GND
20. VCC

Functional Features

• Provides bidirectional voltage level translation between two logic families
• Supports voltage translation from TTL/CMOS to CMOS logic levels
• Enables interfacing between devices operating at different voltage levels
• Offers high-speed operation with minimal propagation delay
• Low power consumption makes it suitable for battery-powered applications
• 3-state output allows for easy bus sharing

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - Bidirectional level translation - 3-state output for bus sharing

Disadvantages: - Limited to specific logic families (ACTQ) - Not suitable for voltage translation between non-CMOS logic families

Working Principles

The 74ACTQ843SCX utilizes a combination of MOSFETs and CMOS technology to achieve voltage level translation. It employs a voltage divider network to shift the input signal levels to the desired output voltage levels. The device operates by monitoring the input voltage and adjusting the output voltage accordingly, ensuring proper logic level translation.

Detailed Application Field Plans

The 74ACTQ843SCX finds applications in various fields where voltage level translation is required. Some of the common application areas include:

1. Microcontroller interfacing with different voltage peripherals
2. Communication systems involving multiple voltage domains
3. Industrial automation and control systems
4. Battery-powered devices requiring efficient level shifting
5. Sensor networks with mixed voltage requirements

Detailed and Complete Alternative Models

1. 74ACTQ841SCX: Similar functionality but with fewer pins (16 instead of 20)
2. 74ACTQ844SCX: Similar functionality but with additional 3-state outputs
3. 74ACTQ845SCX: Similar functionality but with higher operating temperature range (-55°C to +125°C)

These alternative models provide similar voltage level translation capabilities but may have variations in pin count, additional features, or extended temperature ranges.

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