PCA9507D

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PCA9507D

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2-WIRE SERIAL BUS EXTENDER FOR H

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Description

The PCA9507D is a bidirectional I2C-bus repeater designed by NXP Semiconductors. It facilitates communication between two I2C buses operating at different voltage levels, making it particularly useful in mixed-voltage systems. The device supports standard-mode, fast-mode, and fast-mode plus I2C-bus speeds, which means it can handle data rates up to 1 MHz.
One key feature of the PCA9507D is its ability to enable level shifting, allowing it to connect a low-voltage processor or microcontroller to higher voltage I2C devices. The device features two open-drain I/O pins, SDA and SCL, which are used for connecting to the I2C bus. These pins are capable of handling different voltage levels on each side, supporting voltage translation between 1.0 V and 5.5 V.
Additionally, the PCA9507D offers robust ESD protection and has a low power consumption, making it suitable for battery-operated devices. It is typically used in applications like smartphones, tablets, and other embedded systems requiring reliable I2C communication across different voltage domains.

Equivalent

The PCA9507D is a dual bidirectional I2C-bus and SMBus voltage-level translator. Equivalent products include the Texas Instruments TCA9507, which offers similar voltage level translation capabilities. Another alternative could be the NXP PCA9617A, though it may have slight differences in specifications. Always check the datasheets for compatibility with your specific application requirements.

Features

The PCA9507D is an I²C-bus repeater designed to enable longer bus lengths in I²C systems by isolating capacitance and allowing for higher capacitive nodes. Key features include:
1. Voltage Translation: Supports bidirectional voltage level translation between 0.9 V and 5.5 V, facilitating communication between different voltage domains.
2. Frequency: Operates at standard, fast, and fast-mode plus (Fm+) I²C speeds, up to 1 MHz.
3. Bus Drive Capability: Provides strong drive capability on the A-side and B-side, supporting larger bus line capacitances, which enables longer communication lines.
4. Capacitance Isolation: Isolates bus capacitance on both sides, allowing systems to communicate over longer distances without degrading signal quality.
5. Rise Time Accelerator: Integrated accelerators improve rise times on both sides of the bus, enhancing performance.
6. Enable Pin: Includes an enable pin for isolating the A-side from the B-side, which can help in power saving and system control.
7. Low Propagation Delay: Offers fast response times with minimal delay, which is crucial for maintaining high data integrity across the bus.
These features make the PCA9507D suitable for complex I²C applications that require reliable communication over extended distances.

Pinout

The PCA9507D is an I²C-bus repeater or buffer manufactured by NXP Semiconductors. It comes in an 8-pin package. The pin functions are as follows:
1. VCC(A): Power supply for the A-side, typically connected to 3.3V or 5V.
2. SDA(A): Serial Data for A-side; acts as a bidirectional data line for the I²C bus.
3. SCL(A): Serial Clock for A-side; clock line for the I²C bus.
4. GND: Ground reference for both A-side and B-side.
5. SDA(B): Serial Data for B-side; connects to the B-side I²C bus data line.
6. SCL(B): Serial Clock for B-side; connects to the B-side I²C bus clock line.
7. EN: Enable pin; used to enable or disable the buffer function.
8. VCC(B): Power supply for the B-side, can be different from VCC(A) to allow level shifting.
The PCA9507D enables communication between I²C devices operating at different voltage levels, making it useful for mixed-voltage applications.

Manufacturer

The PCA9507D is manufactured by NXP Semiconductors. NXP Semiconductors is a global semiconductor company that provides high-performance mixed-signal and standard product solutions. Founded as part of Philips, NXP became an independent entity in 2006 and has its headquarters in Eindhoven, Netherlands. The company is known for its innovative solutions in a variety of sectors, including automotive, industrial, mobile, and consumer applications. NXP specializes in secure connectivity solutions for embedded applications, offering products such as microcontrollers, communication processors, and security solutions, among others. The company plays a significant role in the semiconductor industry, focusing on enabling secure connections and infrastructure for a smarter world.

Application

The PCA9507D is a dual bidirectional I2C-bus repeater optimized for high-frequency data transfer. Its primary application areas include:
1. Consumer Electronics: Enhances communication between I2C devices in TVs, set-top boxes, and gaming consoles.
2. Computing: Facilitates data transfer in desktops, laptops, and servers.
3. Industrial Automation: Supports robust I2C communication in control systems and sensors.
4. Automotive: Used in infotainment systems and electronic control units.
5. Telecommunications: Aids in network equipment for efficient data routing.
6. Medical Devices: Ensures reliable data exchange in diagnostic and monitoring equipment.
Its ability to handle high-speed signals makes it suitable for any application requiring efficient I2C communication over long distances or in electrically noisy environments.

Package

The PCA9507D is a dual bidirectional bus buffer with a voltage level translation package typically available in an SO (Small Outline) package type. This format is compact and suitable for surface-mount applications, providing ease of integration in circuit designs.

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