SN74ABT640N

Product Overview

• Category: Integrated Circuit
• Use: Bus Transceiver
• Characteristics: High-speed, non-inverting, 3-state transceiver
• Package: PDIP (Plastic Dual-In-Line Package)
• Essence: Converts signals between two bidirectional bus systems
• Packaging/Quantity: Available in tubes of 25 units or reels of 2000 units

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
• Maximum Propagation Delay: 6ns
• Maximum Output Current: ±24mA

Detailed Pin Configuration

The SN74ABT640N has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Active Low Output Enable
2. A1-A8 (Input/Output) - Bidirectional Data Bus
3. B1-B8 (Input/Output) - Bidirectional Data Bus
4. GND (Ground) - Ground Reference
5. BDIR (Bus Direction) - Controls the direction of data flow
6. VCC (Supply Voltage) - Positive Power Supply
7. B1-B8 (Input/Output) - Bidirectional Data Bus
8. A1-A8 (Input/Output) - Bidirectional Data Bus
9. OE (Output Enable) - Active Low Output Enable
10. GND (Ground) - Ground Reference

Functional Features

• Non-inverting 3-state outputs
• Bidirectional data flow between two bus systems
• Active low output enable for easy control
• High-speed operation for efficient data transfer
• TTL-compatible inputs for easy integration with other devices

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data transfer - Non-inverting outputs simplify signal processing - 3-state outputs provide flexibility in bus systems - Active low output enable enhances control capabilities

Disadvantages: - Limited supply voltage range (4.5V to 5.5V) - Propagation delay of 6ns may not be suitable for certain applications - Maximum output current of ±24mA may restrict use in high-current scenarios

Working Principles

The SN74ABT640N is a bus transceiver that converts signals between two bidirectional bus systems. It operates by controlling the direction of data flow using the BDIR pin. When BDIR is set to logic low, data flows from the A bus to the B bus. Conversely, when BDIR is set to logic high, data flows from the B bus to the A bus.

The non-inverting 3-state outputs allow the SN74ABT640N to drive the bus lines without altering the signal polarity. The active low output enable (OE) pin enables or disables the outputs, providing control over the data transmission.

Detailed Application Field Plans

The SN74ABT640N is commonly used in various applications, including:

1. Data communication systems
2. Microprocessor-based systems
3. Industrial automation
4. Automotive electronics
5. Networking equipment

Its ability to convert signals between different bus systems makes it suitable for applications requiring bidirectional data transfer.

Detailed and Complete Alternative Models

1. SN74ABT640DW - SOIC (Small Outline Integrated Circuit) package
2. SN74ABT640DBR - SSOP (Shrink Small Outline Package) package
3. SN74ABT640PWR - TSSOP (Thin Shrink Small Outline Package) package
4. SN74ABT640DWR - SOIC package

These alternative models offer different package options to suit specific design requirements while providing similar functionality to the SN74ABT640N.

In conclusion, the SN74ABT640N is a high-speed, non-inverting bus transceiver that allows bidirectional data flow between two bus systems. Its active low output enable and 3-state outputs provide control and flexibility in various applications. While it has certain limitations, such as a limited supply voltage range and propagation delay, there are alternative models available to cater to different packaging needs.