74LVC646ADB,112

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-power, bidirectional voltage level shifting
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Transfers data between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: 0V to VCC
• Maximum Data Rate: 400 Mbps
• Number of Channels: 8
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LVC646ADB,112 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 (Supply Voltage)
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. OE (Output Enable) 2
15. I/O9 (Bidirectional Data I/O) 9
16. VCC (Supply Voltage)
17. I/O10 (Bidirectional Data I/O) 10
18. I/O11 (Bidirectional Data I/O) 11
19. I/O12 (Bidirectional Data I/O) 12
20. I/O13 (Bidirectional Data I/O) 13
21. I/O14 (Bidirectional Data I/O) 14
22. I/O15 (Bidirectional Data I/O) 15
23. I/O16 (Bidirectional Data I/O) 16
24. GND (Ground)

Functional Features

• Bidirectional voltage level shifting between two voltage domains
• Automatic direction control based on DIR pin
• High-speed data transfer up to 400 Mbps
• Low power consumption
• Schmitt-trigger action on all inputs for noise immunity
• Supports mixed-mode signal operation on all ports

Advantages and Disadvantages

Advantages: - Enables communication between devices operating at different voltage levels - High-speed data transfer capability - Low power consumption - Noise immunity due to Schmitt-trigger action on inputs

Disadvantages: - Limited number of channels (8 in this case) - Restricted operating temperature range (-40°C to +85°C)

Working Principles

The 74LVC646ADB,112 is designed to shift the voltage levels of bidirectional data signals between two voltage domains. It uses a DIR pin to control the direction of data flow. When DIR is set to logic high, data is transferred from the A-side to the B-side, and when DIR is set to logic low, data is transferred from the B-side to the A-side.

The IC operates with a supply voltage ranging from 1.2V to 3.6V. It features Schmitt-trigger inputs that provide noise immunity by ensuring reliable switching even in the presence of input signal noise.

Detailed Application Field Plans

The 74LVC646ADB,112 is commonly used in various applications where voltage level shifting and bidirectional data transfer are required. Some of the typical application fields include:

1. Communication Systems: Used to interface between different voltage domains in communication systems such as UART, SPI, I2C, etc.
2. Industrial Automation: Enables data exchange between devices operating at different voltage levels in industrial automation systems.
3. Consumer Electronics: Facilitates communication between components with varying voltage requirements in consumer electronic devices like smartphones, tablets, and gaming consoles.
4. Automotive Electronics: Used for voltage level translation in automotive electronics systems, allowing communication between different subsystems.

Detailed and Complete Alternative Models

• 74LVC245A: Octal Bus Transceiver with Direction Pin
• SN74LVC1T45: Single-Bit Dual-Supply Bus Transceiver
• TXB0108: 8-Bit Bidirectional Voltage-Level Translator

These alternative models offer similar functionality and can be considered as alternatives to the 74LVC646ADB,112 depending on specific application requirements.

*Note: The content provided