74LVC646AD,118

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-power, bidirectional voltage translation
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Voltage level conversion between different logic families
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 1.2V to 3.6V
• Logic Family: LVC (Low-Voltage CMOS)
• Number of Channels: 8
• Input/Output Compatibility: TTL, CMOS
• Data Rate: Up to 400 Mbps
• Propagation Delay: 4.5 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LVC646AD,118 IC has a total of 24 pins. The pin configuration is as follows:

1. OE (Output Enable) 1
2. I/O1 (Bidirectional Data I/O) 1
3. GND (Ground)
4. I/O2 (Bidirectional Data I/O) 2
5. VCC (Power Supply)
6. I/O3 (Bidirectional Data I/O) 3
7. I/O4 (Bidirectional Data I/O) 4
8. I/O5 (Bidirectional Data I/O) 5
9. I/O6 (Bidirectional Data I/O) 6
10. I/O7 (Bidirectional Data I/O) 7
11. I/O8 (Bidirectional Data I/O) 8
12. DIR (Direction Control)
13. GND (Ground)
14. A1 (Address Input) 1
15. A2 (Address Input) 2
16. A3 (Address Input) 3
17. A4 (Address Input) 4
18. VCC (Power Supply)
19. GND (Ground)
20. B1 (Address Input) 5
21. B2 (Address Input) 6
22. B3 (Address Input) 7
23. B4 (Address Input) 8
24. OE (Output Enable) 2

Functional Features

• Bidirectional voltage translation between two logic families
• Automatic direction control based on DIR pin input
• Output enable/disable control using OE pins
• High-speed data transmission up to 400 Mbps
• Low power consumption
• ESD protection for robust operation

Advantages and Disadvantages

Advantages: - Supports bidirectional communication between different logic families - Wide supply voltage range allows compatibility with various systems - Fast data transmission speed enables high-performance applications - Low power consumption helps in energy-efficient designs - ESD protection ensures reliability in harsh environments

Disadvantages: - Limited number of channels (8 in this case) - May require additional external components for specific applications

Working Principles

The 74LVC646AD,118 is a level shifter and bus transceiver IC that facilitates voltage translation between different logic families. It operates by receiving data from one side and translating it to the appropriate voltage levels compatible with the other side. The direction of data flow is controlled by the DIR pin, while the OE pins enable or disable the output.

The IC utilizes low-voltage CMOS technology, allowing it to operate at a wide supply voltage range of 1.2V to 3.6V. It supports bidirectional communication between TTL and CMOS logic families, making it suitable for interfacing different devices with varying voltage requirements.

Detailed Application Field Plans

The 74LVC646AD,118 IC finds applications in various fields where voltage level translation and bus transceiver functions are required. Some potential application areas include:

1. Embedded Systems: Used for interfacing microcontrollers or processors operating at different voltage levels.
2. Communication Systems: Facilitates data exchange between devices using different logic families, such as UART, SPI, or I2C interfaces.
3. Industrial Automation: Enables communication between control systems and sensors/actuators with different voltage requirements.
4. Automotive Electronics: Used in automotive communication protocols like CAN (Controller Area Network) to bridge voltage gaps between ECUs (Electronic Control Units).
5. Consumer Electronics: Facilitates communication between devices operating at different voltage levels, such as smartphones, tablets, and peripherals.

Detailed and Complete Alternative Models

• 74LVC245A: Octal Bus Transceiver with Direction Pin
• SN74LVC1T45: Single-Bit Dual-Supply Bus Transceiver
• 74LVCH162244A: 16-Bit Buffer