74HCT245N,652

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level shifting and signal buffering
• Characteristics: High-speed CMOS technology, low power consumption
• Package: DIP-20 (Dual In-line Package with 20 pins)
• Essence: Octal bus transceiver with tri-state outputs
• Packaging/Quantity: Tape and reel packaging, 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
• Output Current: ±6mA
• Propagation Delay Time: 9ns (max) at 5V supply voltage

Detailed Pin Configuration

1. OE (Output Enable) - Active Low Output Enable
2. A1 - Data Input/Output 1
3. B1 - Data Input/Output 2
4. A2 - Data Input/Output 3
5. B2 - Data Input/Output 4
6. A3 - Data Input/Output 5
7. B3 - Data Input/Output 6
8. A4 - Data Input/Output 7
9. B4 - Data Input/Output 8
10. GND (Ground)
11. B5 - Data Input/Output 9
12. A5 - Data Input/Output 10
13. B6 - Data Input/Output 11
14. A6 - Data Input/Output 12
15. B7 - Data Input/Output 13
16. A7 - Data Input/Output 14
17. B8 - Data Input/Output 15
18. A8 - Data Input/Output 16
19. VCC (Supply Voltage)
20. DIR (Direction Control) - Input for controlling data flow direction

Functional Features

• Bidirectional data transfer between two buses with different voltage levels
• Tri-state outputs allow multiple devices to share a common bus
• High-speed operation suitable for applications requiring fast data transfer
• Low power consumption makes it ideal for battery-powered devices
• Schmitt-trigger action on all inputs ensures noise immunity

Advantages and Disadvantages

Advantages

• Enables interfacing between systems operating at different voltage levels
• Provides flexibility in designing multi-voltage level circuits
• Supports bidirectional communication between buses
• Tri-state outputs prevent bus contention issues

Disadvantages

• Limited output current may restrict its use in high-current applications
• Propagation delay time may affect timing-sensitive applications

Working Principles

The 74HCT245N,652 is an octal bus transceiver that allows bidirectional data transfer between two buses with different voltage levels. It operates by using the DIR input to control the direction of data flow. When DIR is high, data is transferred from the A bus to the B bus, and when DIR is low, data is transferred from the B bus to the A bus.

The tri-state outputs enable multiple devices to share a common bus without causing conflicts. When the OE input is low, the outputs are enabled, allowing data to be driven onto the bus. When OE is high, the outputs are disabled, effectively disconnecting the device from the bus.

The IC utilizes high-speed CMOS technology, providing fast data transfer capabilities. It also features low power consumption, making it suitable for battery-powered applications. The Schmitt-trigger action on all inputs ensures noise immunity, enhancing the reliability of data transmission.

Detailed Application Field Plans

• Level shifting in mixed-voltage systems
• Signal buffering in communication interfaces
• Interfacing between microcontrollers and peripheral devices
• Bus communication in industrial automation systems
• Data transfer between different logic families

Detailed and Complete Alternative Models

• 74HCT245,652: Similar to 74HCT245N,652 but with a different package (SOIC-20)
• SN74HCT245N: Equivalent IC from Texas Instruments with similar specifications and pin configuration
• MC74HCT245AN: Alternative IC from ON Semiconductor with comparable features and performance

Note: The above alternative models are provided as examples and may vary based on manufacturer availability.

This entry provides an overview of the 74HCT245N,652 integrated circuit. It includes information about its category, use, characteristics, package, essence, packaging/quantity, specifications, pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.