74HCT646D,652

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Bus Transceiver
• Characteristics: High-speed, CMOS technology, 3-state outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Bidirectional octal 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 +125°C
• Propagation Delay Time: 8 ns (max)
• Output Current: ±6 mA
• Input Capacitance: 3 pF (typ)

Detailed Pin Configuration

1. OE (Output Enable)
2. A0-A7 (Data Bus)
3. B0-B7 (Data Bus)
4. DIR (Direction Control)
5. GND (Ground)
6. VCC (Supply Voltage)
7. BDIR (Bus Direction Control)
8. O0-O7 (Data Bus)

Functional Features

• Bidirectional data transfer between two buses
• 3-state outputs allow multiple devices to share the same bus
• Direction control pin for selecting input or output mode
• Output enable pin for enabling/disabling the outputs

Advantages

• High-speed operation allows for efficient data transfer
• CMOS technology provides low power consumption
• 3-state outputs facilitate bus sharing among multiple devices

Disadvantages

• Limited voltage range of 4.5V to 5.5V
• Propagation delay time may affect real-time applications

Working Principles

The 74HCT646D,652 is a bidirectional octal bus transceiver that allows data transfer between two buses. The direction of data flow is controlled by the DIR and BDIR pins. When DIR is high, data flows from A to B, and when DIR is low, data flows from B to A. The OE pin enables or disables the outputs. In the disabled state, the outputs are in a high-impedance state (3-state), allowing multiple devices to share the same bus.

Detailed Application Field Plans

The 74HCT646D,652 is commonly used in various applications where bidirectional data transfer is required. Some typical application fields include: 1. Microprocessor systems 2. Data communication systems 3. Industrial control systems 4. Automotive electronics 5. Networking equipment

Detailed and Complete Alternative Models

• SN74HCT646D
• MC74HCT646N
• CD74HCT646E
• 74HCT646PW,118

Please note that these alternative models may have slight variations in specifications and packaging.

This entry provides an overview of the 74HCT646D,652 integrated circuit, including its basic information, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.