PCA9507DP

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PCA9507DP

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2-WIRE SERIAL BUS EXTENDER FOR H

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Specifications

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Overview

Description

The PCA9507DP is an I²C-bus repeater designed by NXP Semiconductors. It serves as a bidirectional buffer for the I²C and SMBus interfaces, featuring two VCC pins to allow level shifting between 1.0 V and 5.5 V. This enables communication between devices with different voltage levels. The PCA9507DP is particularly useful in applications where a longer bus length or additional capacitance is introduced, as it strengthens the I²C signals.
Key features of the PCA9507DP include:
1. Voltage Compatibility: Supports level shifting between different logic voltage levels.
2. Bidirectional Buffering: Facilitates communication in both directions on the I²C bus.
3. Hot Swapping: Allows devices to be added or removed from the bus without disrupting communication.
4. Low Standby Current: Ensures minimal power consumption in inactive states.
5. Rise Time Accelerators: Improves signal integrity by speeding up the rise and fall times of I²C signals.
The device is commonly used in consumer electronics, industrial automation, and communication systems to enhance signal integrity and reliability across varying voltage levels.

Equivalent

The PCA9507DP is a level-translating I2C bus repeater. Some equivalent products that perform similar functions include the TCA9802 from Texas Instruments, the P82B96 from NXP Semiconductors, and the LTC4311 from Analog Devices. These alternatives may have varying specifications, so it's important to compare their features and ensure compatibility with your specific application requirements.

Features

The PCA9507DP is a low-power I2C bus repeater designed to enable long-distance communication and expand bus capacitance. Key features include:
1. Level Shifting: It provides bi-directional level shifting between different voltage levels (1.0 V to 5.5 V), making it suitable for mixed-voltage systems.

2. I2C Protocol Support: Supports I2C-bus standard and Fast-mode Plus (Fm+), allowing faster data rates up to 1 MHz.

3. Low Power Consumption: Offers low standby current, enhancing power efficiency in battery-powered devices.

4. Capacitance Drive: Capable of driving up to 4000 pF on the SCL and SDA lines, which is ideal for long bus lines.

5. Hot Swap Capability: Supports hot insertion through the use of rise time accelerators to maintain signal integrity.
6. Voltage Flexibility: Operates from a wide supply voltage range, accommodating both low and high-voltage systems.
7. Compact Package: Available in a small TSSOP package, conserving board space.
These features make it suitable for applications in personal computing, consumer electronics, and industrial control systems.

Pinout

The PCA9507DP is a 2-wire bus buffer that facilitates the communication between I²C-bus devices operating at different voltage levels. It features a pin count of 8. Here are the pin functions:
1. A1: Bus side 1, an open-drain pin for connecting to the I²C bus on the higher voltage side.
2. A2: Bus side 1, a low-level input used for connecting to the I²C bus on the higher voltage side.
3. GND: Ground pin for connecting the device to the common ground.
4. EN: Enable pin, used to enable or disable the buffer function.
5. B1: Bus side 2, an open-drain pin for connecting to the I²C bus on the lower voltage side.
6. B2: Bus side 2, a low-level input used for connecting to the I²C bus on the lower voltage side.
7. VCCB: Supply voltage for bus side 2, typically at a lower voltage level.
8. VCCA: Supply voltage for bus side 1, typically at a higher voltage level.
The PCA9507DP allows level translation between I²C bus devices operating at different voltages, ensuring compatibility and reliable communication across varying voltage levels.

Manufacturer

The PCA9507DP is manufactured by NXP Semiconductors. NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands. It specializes in producing a wide range of semiconductor products, including microcontrollers, processors, and mixed-signal and standard products, which are used in various applications such as automotive, industrial, mobile, and consumer markets. NXP is known for its innovations in automotive electronics, secure connectivity solutions, and smart city technologies. The company is considered one of the leading players in the semiconductor industry, focusing on providing high-performance solutions with an emphasis on security and connectivity.

Application

The PCA9507DP is a bidirectional open-drain buffer designed for I²C and SMBus communications. Its key application areas include:
1. Level Shifting: Facilitates communication between devices with different voltage levels, such as 1.2 V on the low-voltage side and 3.3 V or 5 V on the high-voltage side.
2. Long-distance Communication: Enhances signal integrity over extended cable lengths by buffering signals to maintain communication quality.
3. Multi-Master Systems: Supports systems with multiple masters by ensuring proper signal transmission and reception.
4. Industrial and Consumer Electronics: Used in devices like microcontrollers, sensors, and other peripherals that require reliable I²C or SMBus interfacing.
These applications make the PCA9507DP suitable for various industrial, automotive, and consumer electronics applications.

Package

The PCA9507DP is housed in a TSSOP (Thin Shrink Small Outline Package) with 8 pins. TSSOP packages are commonly used for integrated circuits and offer a compact footprint with a thin profile, suitable for space-constrained applications.

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