Encyclopedia Entry: 74FCT621ATSOG

Product Overview

Category

The 74FCT621ATSOG belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for various applications such as data storage, signal processing, and communication systems.

Characteristics

• The 74FCT621ATSOG is a high-speed octal bus transceiver with tri-state outputs.
• It operates on a wide voltage range, typically between 4.5V and 5.5V.
• This IC offers low power consumption and high noise immunity.
• It is designed to provide bidirectional communication between buses with different voltage levels.

Package and Quantity

The 74FCT621ATSOG is available in a small-outline SOG package. Each package contains one unit of the IC.

Specifications

• Operating Voltage Range: 4.5V to 5.5V
• Number of Channels: 8
• Input/Output Compatibility: TTL/CMOS
• Maximum Operating Frequency: 100 MHz
• Output Drive Capability: ±24 mA
• Propagation Delay Time: 6 ns (max)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The detailed pin configuration of the 74FCT621ATSOG is as follows:

┌───┬───┐ A0 ─┤1 20├─ VCC A1 ─┤2 19├─ B0 A2 ─┤3 18├─ B1 A3 ─┤4 17├─ B2 A4 ─┤5 16├─ B3 A5 ─┤6 15├─ B4 A6 ─┤7 14├─ B5 A7 ─┤8 13├─ B6 GND ─┤9 12├─ B7 OE ─┤10 11├─ DIR └─────┘

Functional Features

• Bidirectional data transfer: The 74FCT621ATSOG allows data to be transmitted in both directions between two buses.
• Tri-state outputs: The IC provides tri-state outputs, enabling the bus to be disconnected from the system when not in use.
• Direction control: The DIR pin determines the direction of data flow between the A and B buses.
• Output enable: The OE pin enables or disables the outputs of the IC.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide voltage range compatibility - Low power consumption - Tri-state outputs for bus isolation

Disadvantages: - Limited number of channels (8) - Relatively high propagation delay time

Working Principles

The 74FCT621ATSOG operates based on a combination of digital logic circuits. It uses internal circuitry to control the direction of data flow and enable/disable the outputs. The IC is designed to ensure reliable and efficient bidirectional communication between different buses.

Application Field Plans

The 74FCT621ATSOG finds applications in various fields, including: 1. Data storage systems 2. Microprocessor-based systems 3. Communication networks 4. Industrial automation 5. Test and measurement equipment

Alternative Models

Other alternative models that can be used as substitutes for the 74FCT621ATSOG include: - SN74LVC245A - MC74LVX245 - CD74HCT245

These alternative models offer similar functionality and can be used interchangeably in many applications.

In conclusion, the 74FCT621ATSOG is a high-speed octal bus transceiver IC with bidirectional data transfer capability. It is widely used in digital electronics for various applications due to its compatibility, low power consumption, and tri-state outputs.