SN74AS245DWRG4

Product Overview

• Category: Integrated Circuit
• Use: Bus Transceiver
• Characteristics: High-speed, bidirectional data transfer, voltage level shifting
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers data between two bidirectional buses with different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Number of Pins: 20
• Logic Family: AS (Advanced Schottky)

Detailed Pin Configuration

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

Functional Features

• Bidirectional data transfer between two buses
• Voltage level shifting for compatibility between different voltage levels
• High-speed operation for efficient data transmission
• Output enable control for disabling the outputs when not in use

Advantages and Disadvantages

Advantages: - Enables communication between buses with different voltage levels - Fast data transfer speeds - Compact SOIC package for space-saving designs

Disadvantages: - Limited to a specific number of data bits (8 in this case) - Requires careful consideration of voltage compatibility between buses

Working Principles

The SN74AS245DWRG4 is a bus transceiver that facilitates bidirectional data transfer between two buses, typically with different voltage levels. It operates by using a direction control pin (DIR) to determine the flow of data between the buses. When DIR is set to logic high, data flows from Bus A to Bus B, and when DIR is set to logic low, data flows from Bus B to Bus A.

The integrated circuit incorporates voltage level shifting functionality, allowing it to translate signals between buses operating at different voltage levels. This feature ensures compatibility and seamless communication between systems with varying voltage requirements.

The output enable pin (OE) provides control over the outputs. When OE is set to logic high, the outputs are enabled, allowing data to be transferred. Conversely, setting OE to logic low disables the outputs, preventing any data transfer.

Detailed Application Field Plans

The SN74AS245DWRG4 finds applications in various fields where bidirectional data transfer between buses with different voltage levels is required. Some common application areas include:

1. Industrial Automation: Facilitating communication between different subsystems operating at different voltage levels.
2. Automotive Electronics: Enabling data exchange between various vehicle systems with varying voltage requirements.
3. Telecommunications: Supporting data transmission between different network interfaces.
4. Consumer Electronics: Facilitating communication between different components within electronic devices.

Detailed and Complete Alternative Models

1. SN74LVC245APW: Low Voltage CMOS Bus Transceiver
2. SN74HC245N: High-Speed CMOS Logic Level Shifter
3. SN74LVCH245ADBR: Low-Voltage CMOS Octal Bus Transceiver

These alternative models offer similar functionality to the SN74AS245DWRG4 but may have different specifications, pin configurations, or package options. It is important to select the appropriate alternative based on specific requirements and constraints.

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