SN74AHCT245PW

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level shifting and voltage translation
• Characteristics: High-speed, low-power, bidirectional voltage-level translator
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage: 2V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 6 ns (typical)
• Output Drive Capability: ±24 mA

Detailed Pin Configuration

The SN74AHCT245PW has a total of 20 pins arranged as follows:

1. DIR: Direction Control Input
2. OE: Output Enable Input
3. A1: Data Input/Output
4. B1: Data Input/Output
5. A2: Data Input/Output
6. B2: Data Input/Output
7. A3: Data Input/Output
8. B3: Data Input/Output
9. A4: Data Input/Output
10. B4: Data Input/Output
11. GND: Ground
12. B5: Data Input/Output
13. A5: Data Input/Output
14. B6: Data Input/Output
15. A6: Data Input/Output
16. B7: Data Input/Output
17. A7: Data Input/Output
18. B8: Data Input/Output
19. A8: Data Input/Output
20. VCC: Supply Voltage

Functional Features

• Bidirectional voltage-level translation between two different voltage domains
• Automatic direction control based on the DIR input signal
• Output enable control using the OE input signal
• High-speed operation with low power consumption
• Supports a wide range of supply voltages (2V to 5.5V)
• Provides robust ESD protection for reliable operation

Advantages and Disadvantages

Advantages: - Fast propagation delay ensures quick signal translation - Low power consumption for energy-efficient applications - Wide supply voltage range allows compatibility with various systems - Robust ESD protection enhances reliability

Disadvantages: - Limited number of data input/output channels (8 in total) - May require additional components for more complex level shifting scenarios

Working Principles

The SN74AHCT245PW is designed to translate signals between two voltage domains. It operates based on the input signals received at the DIR, OE, and data input pins. The DIR pin controls the direction of signal translation, while the OE pin enables or disables the output. The IC uses a combination of transistors and logic gates to perform the voltage-level translation.

Detailed Application Field Plans

The SN74AHCT245PW can be used in various applications that require level shifting and voltage translation. Some potential application fields include:

1. Microcontroller Interfacing: Connecting microcontrollers operating at different voltage levels.
2. Communication Systems: Translating signals between different communication protocols or standards.
3. Sensor Networks: Enabling communication between sensors operating at different voltage levels.
4. Industrial Automation: Facilitating signal translation in industrial control systems.
5. Automotive Electronics: Level shifting in automotive electronic systems.

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar bidirectional voltage-level translator with 8 data input/output channels.
2. SN74LVCH245A: Low-voltage, high-speed translator with 8 data input/output channels.
3. SN74AVC4T245: Quad-bit level shifter with 4 data input/output channels.

These alternative models offer similar functionality and can be considered as alternatives to the SN74AHCT245PW based on specific requirements and constraints.

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