MC74LVX245MEL

Overview

Category: Integrated Circuit (IC)

Use: Level Shifter/Transceiver

Characteristics: - Low-voltage CMOS technology - High-speed operation - Wide voltage range compatibility - Bidirectional data transfer capability - 3-state outputs for bus-oriented applications

Package: SOIC-20

Essence: The MC74LVX245MEL is a level shifter and transceiver IC that allows bidirectional voltage level translation between different logic levels. It is commonly used in digital systems where interfacing between devices operating at different voltage levels is required.

Packaging/Quantity: The MC74LVX245MEL is available in a Small Outline Integrated Circuit (SOIC) package with 20 pins. It is typically sold in reels or tubes containing multiple units.

Specifications

The MC74LVX245MEL has the following specifications:

• Supply Voltage Range: 1.65V to 5.5V
• Logic Voltage Levels:
  • High-Level Input Voltage (VIH): 2.0V to VCC + 0.5V
  • Low-Level Input Voltage (VIL): -0.5V to 0.8V
  • High-Level Output Voltage (VOH): VCC - 0.4V
  • Low-Level Output Voltage (VOL): 0.4V
• Maximum Input Current: ±10mA
• Maximum Output Current: ±24mA
• Propagation Delay: 6ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MC74LVX245MEL has a total of 20 pins, which are assigned specific functions as follows:

1. OE (Output Enable) - Active low output enable input
2. A1 - Data input/output pin
3. B1 - Data input/output pin
4. A2 - Data input/output pin
5. B2 - Data input/output pin
6. A3 - Data input/output pin
7. B3 - Data input/output pin
8. A4 - Data input/output pin
9. B4 - Data input/output pin
10. GND (Ground) - Ground reference
11. B5 - Data input/output pin
12. A5 - Data input/output pin
13. B6 - Data input/output pin
14. A6 - Data input/output pin
15. B7 - Data input/output pin
16. A7 - Data input/output pin
17. B8 - Data input/output pin
18. A8 - Data input/output pin
19. VCC - Positive power supply
20. DIR (Direction Control) - Direction control input

Functional Features

The MC74LVX245MEL offers the following functional features:

• Bidirectional voltage level translation between two logic levels
• 3-state outputs for bus-oriented applications
• High-speed operation suitable for time-critical systems
• Wide voltage range compatibility allows interfacing with various devices
• Low-voltage CMOS technology ensures low power consumption

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices operating at different voltage levels - Supports bidirectional data transfer, simplifying system design - Offers high-speed operation for time-sensitive applications - Wide voltage range compatibility enhances versatility - Low-voltage CMOS technology reduces power consumption

Disadvantages: - May require additional external components for specific applications - Limited to a maximum output current of ±24mA

Working Principles

The MC74LVX245MEL operates based on the principles of voltage level shifting and bidirectional data transfer. It utilizes a combination of CMOS technology and internal circuitry to ensure efficient voltage translation between different logic levels. The direction control input (DIR) determines the data flow direction, while the output enable input (OE) enables or disables the outputs.

Detailed Application Field Plans

The MC74LVX245MEL finds applications in various fields, including:

1. Embedded Systems: Used for interfacing microcontrollers with peripheral devices operating at different voltage levels.
2. Communication Systems: Facilitates level shifting between different communication protocols, such as UART, SPI, and I2C.
3. Industrial Automation: Enables communication between sensors, actuators, and control systems operating at different voltage levels.
4. Automotive Electronics: Used for voltage level translation in automotive control units and communication networks.
5. Consumer Electronics: Facilitates interfacing between different components in electronic devices, such as smartphones and tablets.

Detailed and Complete Alternative Models

Some alternative models to the MC74LVX245MEL that offer similar functionality include:

1. SN74LVC245A
2. 74HCT245
3. CD74