SN74AHC245PW

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 Level Translator
• 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: 80 MHz
• Number of Pins: 20

Detailed Pin Configuration

The SN74AHC245PW has a total of 20 pins, which are numbered 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. A5 (Data Input/Output)
12. B5 (Data Input/Output)
13. A6 (Data Input/Output)
14. B6 (Data Input/Output)
15. A7 (Data Input/Output)
16. B7 (Data Input/Output)
17. A8 (Data Input/Output)
18. B8 (Data Input/Output)
19. GND (Ground)
20. VCC (Supply Voltage)

Functional Features

• Bidirectional Data Transfer: Allows data to be transmitted in both directions.
• Non-Inverting Logic: Maintains the same logic level between input and output.
• High-Speed Operation: Supports a maximum operating frequency of 80 MHz.
• Level Shifting: Translates logic levels between different voltage domains.

Advantages and Disadvantages

Advantages: - Bi-directional communication simplifies circuit design. - Non-inverting logic preserves signal integrity. - High-speed operation enables fast data transfer. - Wide supply voltage range allows compatibility with various systems.

Disadvantages: - Limited number of data lines (8-bit) may not be sufficient for certain applications. - TSSOP package may require careful handling during assembly.

Working Principles

The SN74AHC245PW is a bidirectional level shifter/transceiver integrated circuit. It allows for the translation of logic levels between two different voltage domains. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the outputs. The non-inverting nature of the device ensures that the logic level at the input is maintained at the output. The high-speed operation of the IC enables efficient data transfer between different systems.

Detailed Application Field Plans

The SN74AHC245PW finds applications in various fields, including:

1. Microcontroller Interfacing: It can be used to interface microcontrollers operating at different voltage levels.
2. Communication Systems: It facilitates level shifting in communication interfaces such as UART, SPI, and I2C.
3. Sensor Networks: It enables data exchange between sensors operating at different voltage domains.
4. Industrial Automation: It can be utilized in industrial control systems for signal translation between different subsystems.
5. Automotive Electronics: It assists in connecting components with varying voltage requirements in automotive applications.

Detailed and Complete Alternative Models

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

These alternative models offer similar functionality to the SN74AHC245PW but may have differences in characteristics, package type, or operating voltage range.

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