SN74ALS654DW

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: High-speed, low-power, 8-bit bus transceiver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers data bidirectionally between two buses
• 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 Drive Capability: ±24mA

Detailed Pin Configuration

The SN74ALS654DW has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Bidirectional data transfer between two buses (A and B)
• Output enable control for tristate operation
• Direction control to select the direction of data flow
• High-speed operation with low power consumption
• TTL-compatible inputs and outputs

Advantages and Disadvantages

Advantages: - High-speed data transfer - Low power consumption - Tristate output capability - Wide operating temperature range

Disadvantages: - Limited voltage supply range (4.5V to 5.5V) - Requires external control signals for proper operation

Working Principles

The SN74ALS654DW is a bidirectional bus transceiver that allows data transfer between two separate buses, A and B. The direction of data flow is controlled by the DIR pin. When DIR is high, data flows from bus A to bus B, and when DIR is low, data flows from bus B to bus A.

The OE* pin is used to enable or disable the outputs. When OE* is low, the outputs are enabled and actively drive the bus lines. When OE* is high, the outputs are disabled and enter a high-impedance state, allowing other devices to drive the bus lines.

Detailed Application Field Plans

The SN74ALS654DW is commonly used in various digital logic applications, including:

1. Microprocessor-based systems
2. Data communication systems
3. Industrial control systems
4. Automotive electronics
5. Test and measurement equipment

Detailed and Complete Alternative Models

1. SN74ALS652A: 8-bit bus transceiver with inverted outputs
2. SN74ALS653: 8-bit bus transceiver with parity generator/checker
3. SN74ALS655: 8-bit bus transceiver with output registers

These alternative models provide similar functionality to the SN74ALS654DW but may have additional features or variations in specifications.

Word count: 440 words