SN74ALS654DWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Function
• Characteristics: High-speed, low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 8-bit bus transceiver with 3-state outputs
• 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
• Propagation Delay Time: 6ns (typical)
• Output Current: ±24mA
• Number of Pins: 20

Detailed Pin Configuration

1. A0 - Data Input/Output Bit 0
2. A1 - Data Input/Output Bit 1
3. A2 - Data Input/Output Bit 2
4. A3 - Data Input/Output Bit 3
5. A4 - Data Input/Output Bit 4
6. A5 - Data Input/Output Bit 5
7. A6 - Data Input/Output Bit 6
8. A7 - Data Input/Output Bit 7
9. OE - Output Enable
10. DIR - Direction Control
11. GND - Ground
12. B7 - Data Input/Output Bit 7
13. B6 - Data Input/Output Bit 6
14. B5 - Data Input/Output Bit 5
15. B4 - Data Input/Output Bit 4
16. B3 - Data Input/Output Bit 3
17. B2 - Data Input/Output Bit 2
18. B1 - Data Input/Output Bit 1
19. B0 - Data Input/Output Bit 0
20. VCC - Supply Voltage

Functional Features

• Bidirectional data transfer between two buses
• 3-state outputs for bus isolation
• Output enable and direction control for flexible operation
• High-speed operation suitable for demanding applications
• Low-power consumption for energy efficiency

Advantages and Disadvantages

Advantages: - Allows efficient data exchange between different buses - Provides flexibility in controlling data flow with output enable and direction control pins - High-speed operation ensures quick data transfer - Low-power consumption reduces energy usage

Disadvantages: - Limited to 8-bit data transfer, may not be suitable for larger data sizes - Requires careful handling due to sensitive integrated circuitry

Working Principles

The SN74ALS654DWR is an 8-bit bus transceiver that enables bidirectional data transfer between two buses. It features 3-state outputs, which allow the device to isolate itself from the bus when necessary. The output enable (OE) pin controls the state of the outputs, while the direction (DIR) pin determines the data flow direction.

When OE is high, the outputs are enabled, and data can be transferred bidirectionally between the A and B buses. When OE is low, the outputs are disabled, effectively isolating the device from the bus. The DIR pin determines the direction of data flow: when DIR is low, data flows from A to B, and when DIR is high, data flows from B to A.

Detailed Application Field Plans

The SN74ALS654DWR is commonly used in various applications where bidirectional data transfer is required. Some specific application fields include:

1. Microprocessor Systems: The IC facilitates communication between the microprocessor and other peripherals, such as memory modules or input/output devices.
2. Data Communication Networks: It enables data exchange between different network nodes, ensuring efficient and reliable communication.
3. Industrial Automation: The IC can be used in control systems to transfer data between different components, such as sensors, actuators, and controllers.
4. Automotive Electronics: It plays a crucial role in automotive electronics, allowing data transfer between various subsystems, such as engine control units, infotainment systems, and sensors.

Detailed and Complete Alternative Models

1. SN74ALS652A: Similar to SN74ALS654DWR but with 6-bit bus transceiver functionality.
2. SN74ALS655: 8-bit bus transceiver with additional parity generation/checking capability.
3. SN74ALS651: 8-bit bus transceiver with open-drain outputs for wired-OR applications.

These alternative models offer similar functionality with slight variations to cater to specific requirements.

Word count: 550 words