PCA9518AD,112

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level shifting and translating between different voltage levels in I2C bus systems
• Characteristics: Bi-directional voltage level translator with automatic direction sensing
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Facilitates communication between devices operating at different voltage levels in an I2C bus system
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 400 kbps
• Number of Channels: 8
• Input Low Voltage (VIL): -0.5V to 0.8V
• Input High Voltage (VIH): 1.2V to VDD + 0.5V
• Output Low Voltage (VOL): 0.4V (max) at 3.3V supply
• Output High Voltage (VOH): 2.4V (min) at 3.3V supply

Detailed Pin Configuration

The PCA9518AD,112 has a total of 20 pins. The pin configuration is as follows:

1. OE (Output Enable)
2. A0 (Address Bit 0)
3. A1 (Address Bit 1)
4. A2 (Address Bit 2)
5. SDA (Serial Data)
6. SCL (Serial Clock)
7. GND (Ground)
8. VREF (Reference Voltage)
9. VCCA (Voltage Supply for Side A)
10. VCCB (Voltage Supply for Side B)
11. OE (Output Enable)
12. A3 (Address Bit 3)
13. A4 (Address Bit 4)
14. A5 (Address Bit 5)
15. SDA (Serial Data)
16. SCL (Serial Clock)
17. GND (Ground)
18. VREF (Reference Voltage)
19. VCCA (Voltage Supply for Side A)
20. VCCB (Voltage Supply for Side B)

Functional Features

• Bi-directional voltage level translation between two I2C buses operating at different voltage levels
• Automatic direction sensing eliminates the need for additional control signals
• Supports bidirectional data transfer and clock stretching
• Compatible with I2C Fast Mode (400 kbps) and Standard Mode (100 kbps)
• Low standby current consumption

Advantages

• Simplifies interfacing between devices operating at different voltage levels in I2C bus systems
• Automatic direction sensing reduces the complexity of control circuitry
• Supports high-speed data transfer rates
• Low power consumption during standby mode

Disadvantages

• Limited to I2C bus applications and not suitable for other communication protocols
• May introduce slight signal degradation due to voltage level translation

Working Principles

The PCA9518AD,112 is a bi-directional voltage level translator specifically designed for I2C bus systems. It allows devices operating at different voltage levels to communicate seamlessly by translating the logic levels between the two sides of the bus. The device automatically senses the direction of data flow and adjusts the voltage levels accordingly.

Detailed Application Field Plans

The PCA9518AD,112 is widely used in various applications that require level shifting and translation in I2C bus systems. Some common application fields include: - Consumer electronics - Industrial automation - Automotive systems - Medical devices - Telecommunications equipment

Detailed and Complete Alternative Models

• PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage-level translator
• TXS0108EPWR: 8-bit bidirectional voltage-level translator with automatic direction sensing
• SN74LVC1T45DCKR: Single-bit dual-supply bus transceiver with configurable voltage translation

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