PCA9511D,118

Product Overview

Category

PCA9511D,118 belongs to the category of integrated circuits (ICs).

Use

The PCA9511D,118 is primarily used as a level-translating I2C-bus repeater. It provides bidirectional voltage-level translation between low-voltage (LV) and higher-voltage (HV) I2C-bus or SMBus applications.

Characteristics

• Bidirectional voltage-level translation
• Supports I2C-bus and SMBus protocols
• Low standby current consumption
• Compatible with 2.5V, 3.3V, and 5V systems
• Provides buffering for unidirectional data transfer
• Supports clock stretching and arbitration across the bus
• High noise immunity
• ESD protection exceeds JESD 22

Package

The PCA9511D,118 is available in a small outline package (SOT96-1), also known as a Thin Shrink Small Outline Package (TSSOP).

Essence

The essence of PCA9511D,118 lies in its ability to facilitate voltage-level translation between LV and HV I2C-bus or SMBus applications, ensuring seamless communication between devices operating at different voltage levels.

Packaging/Quantity

The PCA9511D,118 is typically packaged in reels, containing a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 400 kbit/s
• Standby Current: 10 µA (maximum)
• Rise/Fall Time: 20 ns (maximum)

Detailed Pin Configuration

The PCA9511D,118 has a total of 8 pins:

1. VCCA: LV supply voltage
2. SDA1: LV I2C-bus data line
3. SCL1: LV I2C-bus clock line
4. GND: Ground
5. SDA2: HV I2C-bus data line
6. SCL2: HV I2C-bus clock line
7. VCCB: HV supply voltage
8. OE: Output enable

Functional Features

• Bidirectional voltage-level translation between LV and HV I2C-bus or SMBus applications
• Buffering for unidirectional data transfer
• Clock stretching and arbitration support across the bus
• High noise immunity ensures reliable communication
• ESD protection exceeds industry standards

Advantages and Disadvantages

Advantages

• Enables seamless communication between devices operating at different voltage levels
• Supports popular I2C-bus and SMBus protocols
• Low standby current consumption helps conserve power
• Wide supply voltage range compatibility
• Provides ESD protection for enhanced reliability

Disadvantages

• Maximum data rate limited to 400 kbit/s
• Limited pin configuration options

Working Principles

The PCA9511D,118 operates by translating the voltage levels of the I2C-bus or SMBus signals between the low-voltage (LV) and higher-voltage (HV) domains. It uses a bidirectional level-shifting technique to ensure proper signal transmission and reception. The device also incorporates buffering to facilitate unidirectional data transfer. Additionally, it supports clock stretching and arbitration across the bus, allowing multiple devices to communicate effectively.

Detailed Application Field Plans

The PCA9511D,118 finds application in various scenarios where voltage-level translation is required within I2C-bus or SMBus systems. Some potential application fields include:

1. Industrial automation: Facilitating communication between LV and HV devices in industrial control systems.
2. Consumer electronics: Enabling interoperability between LV and HV devices in home automation systems.
3. Automotive electronics: Supporting communication between LV and HV components in automotive control units.
4. Medical devices: Ensuring seamless data exchange between LV and HV sensors and controllers in medical equipment.

Detailed and Complete Alternative Models

1. PCA9306: Similar bidirectional I2C-bus voltage-level translator with automatic direction sensing.
2. TXB0108: Eight-channel bi-directional level shifter suitable for various digital interfaces.
3. BSS138: General-purpose N-channel MOSFET used for level shifting applications.

These alternative models offer similar functionality to the PCA9511D,118 and can be considered as alternatives based on specific requirements.

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