SN74ACT245DWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, Non-Inverting, 8-bit Bidirectional Transceiver
• Package: SOIC-20 Wide
• Essence: Transfers data between two bidirectional bus systems with different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 6 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: ±10 mA
• Maximum Output Current: ±24 mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

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. VCC (Supply Voltage)
20. GND (Ground)

Functional Features

• Bidirectional Data Transfer: Allows data to be transferred in both directions between two bus systems.
• Level Shifting: Translates voltage levels between the two bus systems, ensuring compatibility.
• Non-Inverting: Maintains the same logic polarity of the input signals at the output.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide supply voltage range - Non-inverting functionality - Bidirectional data transfer

Disadvantages: - Limited number of data lines (8-bit) - Requires external control signals for direction and output enable

Working Principles

The SN74ACT245DWRE4 is a bidirectional level shifter and bus transceiver. It allows data to be transferred between two bus systems with different voltage levels. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the outputs. The IC translates the voltage levels of the input signals to match the voltage requirements of the receiving bus system. It operates in a non-inverting manner, maintaining the same logic polarity of the input signals at the output.

Detailed Application Field Plans

1. Interfacing between microcontrollers operating at different voltage levels.
2. Communication between digital devices with incompatible voltage levels.
3. Level shifting in mixed-voltage systems, such as automotive electronics.
4. Bus transceiver in industrial automation and control systems.
5. Interface conversion in consumer electronics, such as smartphones and tablets.

Detailed and Complete Alternative Models

1. SN74ACT244: Octal Buffer/Line Driver with 3-State Outputs
2. SN74LVC245A: Octal Bus Transceiver with 3-State Outputs
3. SN74HCT245: Octal Bus Transceiver with 3-State Outputs
4. SN74LVCH245A: Octal Bus Transceiver with 3-State Outputs
5. SN74LVC8T245: 8-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation

(Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's documentation for a complete list.)

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