CD74HCT245MG4

Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: High-Speed, CMOS Logic, 3-State Outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers data between different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 13 ns (typical)
• Output Current: ±6 mA
• Number of Pins: 20

Pin Configuration

The CD74HCT245MG4 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Transfers data bidirectionally between two voltage domains
• Supports 3-state outputs for bus-oriented applications
• Provides level shifting capability for interfacing different logic families
• High-speed operation suitable for time-critical applications
• CMOS technology ensures low power consumption and compatibility with various systems

Advantages

• Enables seamless communication between devices operating at different voltage levels
• Simplifies interface design by eliminating the need for additional level shifters
• Wide operating voltage range allows compatibility with a variety of systems
• 3-state outputs facilitate bus sharing and reduce contention issues
• High-speed operation enhances overall system performance

Disadvantages

• Limited output current may restrict its use in certain high-current applications
• Requires careful consideration of voltage compatibility to avoid damage or incorrect data transfer
• Sensitivity to electrostatic discharge (ESD) necessitates proper handling and protection measures

Working Principles

The CD74HCT245MG4 is a level shifter/transceiver integrated circuit that facilitates data transfer between different voltage domains. It operates by receiving data from one side and transmitting it to the other, while also providing level shifting functionality to ensure compatibility between different logic families.

The direction of data transfer is controlled by the DIR pin. When DIR is set to a specific logic level, data flows from the corresponding A pins to the B pins or vice versa. The OE pin enables or disables the outputs, allowing the device to enter a high-impedance state when not actively driving the bus.

The CD74HCT245MG4 utilizes CMOS technology, which provides low power consumption and compatibility with various systems. Its high-speed operation makes it suitable for time-critical applications where fast data transfer is required.

Application Field Plans

The CD74HCT245MG4 finds application in various fields where data transfer between different voltage levels is necessary. Some of the potential application areas include:

1. Microcontroller interfacing with external devices operating at different voltage levels
2. Communication systems involving multiple logic families and voltage domains
3. Industrial automation and control systems requiring bidirectional data transfer
4. Automotive electronics for level shifting between different subsystems
5. Consumer electronics for connecting peripherals with varying voltage requirements

Alternative Models

There are several alternative models available that offer similar functionality to the CD74HCT245MG4. Some popular alternatives include:

1. SN74HCT245N by Texas Instruments
2. 74HCT245 by NXP Semiconductors
3. MC74HCT245ADWR2G by ON Semiconductor
4. CD74HC245E by Texas Instruments
5. 74HCT245D by Nexperia

These alternative models provide comparable features and can be used as replacements based on specific design requirements.

In conclusion, the CD74HCT245MG4 is a versatile integrated circuit that enables efficient data transfer between different voltage levels. Its high-speed operation, CMOS technology,