SN74AHC245MDWREP

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: High-Speed, Non-Inverting, 8-Bit Bidirectional Transceiver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: This integrated circuit is designed to shift voltage levels and enable bidirectional communication between two different logic families.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• High-Level Input Voltage: 2 V to VCC
• Low-Level Input Voltage: GND to 0.8 V
• High-Level Output Voltage: VCC - 0.5 V
• Low-Level Output Voltage: 0.5 V
• Maximum Input Current: ±20 mA
• Maximum Output Current: ±25 mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74AHC245MDWREP has a total of 20 pins. The pin configuration is as follows:

1. DIR (Direction Control)
2. OE (Output Enable)
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.
• Level Shifting: Converts voltage levels between different logic families.
• Non-Inverting: Maintains the same logical state of the input signal at the output.
• High-Speed Operation: Supports fast data transmission.

Advantages and Disadvantages

Advantages: - Enables communication between different logic families. - Supports bidirectional data transfer. - Non-inverting operation preserves logical states. - High-speed operation for efficient data transmission.

Disadvantages: - Limited supply voltage range (2 V to 5.5 V). - Maximum input and output current limitations. - Operating temperature range may not be suitable for extreme environments.

Working Principles

The SN74AHC245MDWREP operates by receiving data from one logic family, converting the voltage levels to match the requirements of another logic family, and transmitting the converted data. The direction of data flow is controlled by the DIR pin. When DIR is set to a specific logic level, the data is transferred in that direction. The OE pin enables or disables the output buffers.

Detailed Application Field Plans

The SN74AHC245MDWREP is commonly used in various applications, including:

1. Microcontroller Interfacing: It facilitates communication between microcontrollers operating at different voltage levels.
2. Bus Transceivers: It can be used as a bidirectional transceiver in bus systems, such as I2C or SPI.
3. Logic Level Conversion: It allows interfacing between devices with different logic voltage levels, ensuring compatibility.

Detailed and Complete Alternative Models

1. SN74LVC245APWR: Low-Voltage CMOS Octal Bus Transceiver
2. SN74HCT245N: High-Speed CMOS Octal Bus Transceiver
3. SN74LVCH245ADBR: Low-Voltage CMOS Octal Bus Transceiver with 3-State Outputs
4. SN74AUP1G125DCKR: Single Bus Buffer Gate with 3-State Output

These alternative models offer similar functionality and can be used as substitutes for the SN74AHC245MDWREP in various applications.

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