Encyclopedia Entry: 74FST3245DWR2

Product Information Overview

Category: Integrated Circuit (IC)

Use: The 74FST3245DWR2 is a bidirectional octal bus transceiver designed for asynchronous communication between two buses. It allows bidirectional transfer of data between two independent buses with different voltage levels.

Characteristics: - Bidirectional data flow - Wide voltage range compatibility - High-speed operation - Low power consumption

Package: The 74FST3245DWR2 is available in a standard SOIC-24 package, which provides easy integration into various electronic systems.

Essence: This IC serves as a bridge between two buses, enabling efficient and reliable data transfer in mixed-voltage environments.

Packaging/Quantity: The 74FST3245DWR2 is typically sold in reels or tubes containing multiple units, with each reel/tube containing a specific quantity of ICs.

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: 0V to VCC
• Maximum Data Rate: 400Mbps
• Number of Channels: 8
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The 74FST3245DWR2 has a total of 24 pins, arranged as follows:

___________ | | 1 | 24 | VCC 2 | 23 | B1 3 | 22 | A1 4 | 21 | OE# 5 | 20 | B2 6 | 19 | A2 7 | 18 | DIR# 8 | 17 | B3 9 | 16 | A3 10 | 15 | GND 11 | 14 | B4 12 | 13 | A4 |___________|

Functional Features

• Bidirectional data transfer between two buses with different voltage levels.
• Automatic direction control based on the DIR# input signal.
• Output enable (OE#) pin for disabling the outputs when not in use.
• High-speed operation allows for efficient data transfer.

Advantages and Disadvantages

Advantages: - Wide voltage range compatibility enables integration into various systems. - Bidirectional data flow simplifies communication between different voltage domains. - High-speed operation facilitates fast data transfer. - Low power consumption contributes to energy-efficient designs.

Disadvantages: - Limited number of channels (8) may not be sufficient for certain applications requiring a higher channel count. - The SOIC-24 package may not be suitable for space-constrained designs.

Working Principles

The 74FST3245DWR2 operates by utilizing a combination of internal circuitry, including level shifters and bidirectional buffers. When the DIR# input is set to a specific logic level, the IC automatically controls the direction of data flow between the A and B buses. The OE# pin can be used to disable the outputs when not required, reducing power consumption.

Detailed Application Field Plans

The 74FST3245DWR2 finds application in various fields where bidirectional data transfer between buses with different voltage levels is necessary. Some potential application areas include: - Mixed-voltage system interfaces - Communication protocols conversion - Level shifting between different voltage domains

Detailed and Complete Alternative Models

1. SN74LVC245A: Octal bus transceiver with 3.3V to 5V voltage compatibility.
2. MC74LVX245: Octal bidirectional transceiver with 2.0V to 3.6V voltage range.
3. CD74HCT245: Octal bus transceiver with TTL-level compatibility.

These alternative models offer similar functionality to the 74FST3245DWR2 but may have different specifications, pin configurations, or package options.

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