Encyclopedia Entry: 74VHCT245AMX

Product Overview

Category

The 74VHCT245AMX belongs to the category of integrated circuits (ICs) and specifically falls under the group of bus transceivers.

Use

This IC is primarily used for bidirectional level shifting and voltage translation in digital systems. It enables the transfer of data between two buses operating at different voltage levels.

Characteristics

• Bidirectional voltage translation
• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schmitt trigger inputs for noise immunity

Package

The 74VHCT245AMX is available in a small outline integrated circuit (SOIC) package. This package offers compactness and ease of integration into electronic circuits.

Essence

The essence of the 74VHCT245AMX lies in its ability to facilitate seamless communication between digital systems operating at different voltage levels, ensuring compatibility and reliable data transfer.

Packaging/Quantity

The IC is typically packaged in reels or tubes, containing a specific quantity per package. The exact packaging and quantity may vary depending on the manufacturer and supplier.

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• Input Voltage Levels: Compatible with both TTL and CMOS logic levels
• Output Voltage Levels: Compatible with both TTL and CMOS logic levels
• Maximum Data Rate: X Mbps
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 20 pins

Detailed Pin Configuration

1. A1: Bus A, Pin 1
2. A2: Bus A, Pin 2
3. A3: Bus A, Pin 3
4. A4: Bus A, Pin 4
5. A5: Bus A, Pin 5
6. A6: Bus A, Pin 6
7. A7: Bus A, Pin 7
8. GND: Ground
9. B7: Bus B, Pin 7
10. B6: Bus B, Pin 6
11. B5: Bus B, Pin 5
12. B4: Bus B, Pin 4
13. B3: Bus B, Pin 3
14. B2: Bus B, Pin 2
15. B1: Bus B, Pin 1
16. OE: Output Enable
17. DIR: Direction Control
18. VCC: Supply Voltage
19. NC: No Connection
20. GND: Ground

Functional Features

• Bidirectional data transfer between two buses
• Automatic direction control based on the DIR pin
• Output enable/disable control using the OE pin
• Schmitt trigger inputs for improved noise immunity
• High-speed operation for efficient data transfer

Advantages and Disadvantages

Advantages

• Enables voltage translation between different logic levels
• Low power consumption
• Wide operating voltage range allows compatibility with various systems
• Schmitt trigger inputs provide noise immunity

Disadvantages

• Limited maximum data rate compared to some alternative models
• May require additional external components for certain applications

Working Principles

The 74VHCT245AMX operates by monitoring the DIR pin to determine the direction of data transfer. When the DIR pin is set to a specific logic level, the IC enables bidirectional communication between the two buses. The OE pin controls the output enable/disable functionality, allowing the user to control when data is transmitted.

Detailed Application Field Plans

The 74VHCT245AMX finds application in various digital systems where voltage translation and level shifting are required. Some common application fields include: - Microcontroller interfacing - Data communication systems - Industrial automation - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

1. 74LVC245A: Similar functionality with lower power consumption but limited operating voltage range.
2. SN74HCT245: Higher maximum data rate but requires a wider supply voltage range.
3. CD74HC245: Lower cost alternative with comparable performance, but may have different pin configuration.

Note: The above alternative models are provided for reference purposes. It is recommended to consult the respective datasheets for detailed specifications and suitability for specific applications.

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