SN74AHC245PWG4

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: High-Speed, Non-Inverting, 8-Bit Bidirectional Transceiver
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic IC for voltage level translation and bidirectional data transfer between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• High-Level Input Voltage: 0.7 x VCC to VCC
• Low-Level Input Voltage: 0 V to 0.3 x VCC
• High-Level Output Voltage: 0.9 x VCC to VCC
• Low-Level Output Voltage: 0 V to 0.1 x VCC
• Maximum Operating Frequency: 100 MHz
• Number of Channels: 8
• Input/Output Type: Tri-State

Detailed Pin Configuration

The SN74AHC245PWG4 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Bidirectional Voltage Level Translation: Allows for seamless data transfer between different voltage domains.
• Non-Inverting Logic: Maintains the same logic polarity during translation.
• High-Speed Operation: Supports data rates up to 100 MHz.
• Tri-State Outputs: Enables multiple devices to share a common bus.

Advantages and Disadvantages

Advantages: - Efficient voltage level translation between different voltage domains. - Non-inverting logic preserves signal integrity. - High-speed operation allows for fast data transfer. - Tri-state outputs enable bus sharing.

Disadvantages: - Limited to 8-bit bidirectional data transfer. - Requires careful consideration of voltage compatibility between input and output domains.

Working Principles

The SN74AHC245PWG4 is designed to facilitate bidirectional data transfer between two voltage domains. It utilizes non-inverting logic, ensuring that the logic polarity remains the same during translation. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the outputs. The device operates at high speeds and supports a wide supply voltage range.

Detailed Application Field Plans

The SN74AHC245PWG4 finds applications in various fields, including:

1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
2. Sensor Networks: Enables data exchange between sensors and microcontrollers with different voltage requirements.
3. Industrial Automation: Allows for bidirectional data transfer between control systems and peripheral devices.
4. Communication Systems: Supports voltage level translation in communication interfaces such as UART, SPI, and I2C.
5. Automotive Electronics: Facilitates data exchange between different automotive subsystems operating at varying voltages.

Detailed and Complete Alternative Models

1. SN74LVC245APW - Low-Voltage CMOS Octal Bus Transceiver
2. SN74LVCH245APW - Low-Voltage CMOS Octal Bus Transceiver with 3-State Outputs
3. SN74HCT245PW - High-Speed CMOS Logic Octal Bus Transceiver
4. SN74AHCT245PW - High-Speed CMOS Logic Octal Bus Transceiver with 3-State Outputs
5. SN74ACT245PW - Advanced CMOS Logic Octal Bus Transceiver

These alternative models offer similar functionality and can be used as substitutes for the SN74AHC245PWG4 in various applications.

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