Encyclopedia Entry: 74AHC541PW,112

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, Octal Buffer/Line Driver with 3-State Outputs
• Package: TSSOP-20
• Essence: This IC is designed to shift logic levels between different voltage domains, enabling communication between devices operating at different voltage levels.
• Packaging/Quantity: The 74AHC541PW,112 is typically sold in reels of 2,500 units.

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Levels: Compatible with both TTL and CMOS logic levels
• Output Drive Capability: ±24 mA at 3.3 V supply voltage
• Propagation Delay: 6 ns (typical) at 3.3 V supply voltage
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The 74AHC541PW,112 IC has a total of 20 pins, which are assigned as follows:

1. GND (Ground)
2. A1 (Input/Output)
3. Y1 (Output)
4. A2 (Input/Output)
5. Y2 (Output)
6. A3 (Input/Output)
7. Y3 (Output)
8. A4 (Input/Output)
9. Y4 (Output)
10. A5 (Input/Output)
11. Y5 (Output)
12. A6 (Input/Output)
13. Y6 (Output)
14. A7 (Input/Output)
15. Y7 (Output)
16. A8 (Input/Output)
17. Y8 (Output)
18. OE (Output Enable)
19. VCC (Supply Voltage)
20. GND (Ground)

Functional Features

• Octal buffer/line driver with 3-state outputs
• Provides non-inverting level shifting between different voltage domains
• Enables bidirectional communication between devices operating at different voltage levels
• High-speed operation suitable for various applications
• 3-state outputs allow multiple devices to share a common bus

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - High output drive capability enables driving of capacitive loads - Fast propagation delay ensures efficient signal transmission - 3-state outputs provide flexibility in bus sharing scenarios

Disadvantages: - Limited number of input/output channels (8 in total) - Requires careful consideration of voltage compatibility to avoid damage or incorrect operation

Working Principles

The 74AHC541PW,112 is designed using advanced CMOS technology. It operates by receiving logic-level signals from the input pins (A1-A8) and shifting them to the corresponding output pins (Y1-Y8). The Output Enable (OE) pin controls the state of the outputs, allowing them to be either active or in a high-impedance state.

When the OE pin is low, the outputs are enabled and mirror the logic levels present at the input pins. Conversely, when the OE pin is high, the outputs enter a high-impedance state, effectively disconnecting them from the circuit.

The IC's internal circuitry ensures that logic levels are properly shifted, allowing bidirectional communication between devices operating at different voltage levels.

Detailed Application Field Plans

The 74AHC541PW,112 finds application in various fields where logic level shifting is required. Some common use cases include:

1. Interfacing between microcontrollers operating at different voltage levels.
2. Level translation in mixed-voltage systems, such as battery-powered devices communicating with higher voltage peripherals.
3. Signal buffering and line driving in communication buses, such as I2C or SPI.

Detailed and Complete Alternative Models

1. SN74LVC8T245PW: Octal Bus Transceiver with 3-State Outputs
2. MC74VHC541DW: Octal Buffer/Line Driver with 3-State Outputs
3. CD74HCT541E: High-Speed CMOS Logic Octal Buffer/Line Driver

These alternative models offer similar functionality to the 74AHC541PW,112 and can be considered as alternatives based on specific requirements and availability.

Word count: 530 words