SN74AHC245DWRG4

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 provide bidirectional communication between two different logic voltage domains.
• Packaging/Quantity: Tape and Reel, 2500 units 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 SN74AHC245DWRG4 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 - Supply Voltage

Functional Features

• Bidirectional voltage level shifting between two logic voltage domains.
• Non-inverting operation preserves the logic state of the input signals.
• High-speed operation allows for efficient data transfer.
• Tri-state output capability enables bus sharing between multiple devices.

Advantages and Disadvantages

Advantages: - Allows communication between different logic voltage domains. - Non-inverting operation ensures signal integrity. - High-speed operation supports fast data transfer. - Tri-state output capability facilitates bus sharing.

Disadvantages: - Limited to a maximum operating frequency of 100 MHz. - Requires external control signals for direction and output enable.

Working Principles

The SN74AHC245DWRG4 is a bidirectional transceiver that uses non-inverting buffers to shift voltage levels between two logic voltage domains. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the outputs. When the DIR pin is set to a specific logic level, the corresponding data inputs are connected to the respective data outputs. The non-inverting nature of the transceiver ensures that the logic state of the input signals is preserved during the voltage level shifting process.

Detailed Application Field Plans

The SN74AHC245DWRG4 can be used in various applications where voltage level shifting and bidirectional communication between different logic voltage domains are required. Some potential application fields include:

1. Microcontroller interfacing with different voltage peripherals.
2. Communication interfaces between devices operating at different logic levels.
3. Bus sharing between multiple devices with different voltage requirements.
4. Level translation in mixed-voltage systems.

Detailed and Complete Alternative Models

1. SN74LVC245A: Low-Voltage CMOS Octal Bus Transceiver
2. SN74LVCH245A: Low-Voltage CMOS Octal Bus Transceiver with 3-State Outputs
3. SN74HCT245: High-Speed CMOS Octal Bus Transceiver
4. SN74ACT245: Octal Bus Transceiver with 3-State Outputs
5. SN74F245: Octal Bus Transceiver

These alternative models offer similar functionality to the SN74AHC245DWRG4 and can be considered as alternatives based on specific application requirements.

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