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PCA9500PW from PHILIPS

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PCA9500PW

Manufacturer: PHILIPS

8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM

Partnumber Manufacturer Quantity Availability
PCA9500PW PHILIPS 102 In Stock

Description and Introduction

8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM The **PCA9500PW** from Philips is a versatile, low-voltage, level-shifting I²C-bus repeater designed to facilitate seamless communication between devices operating at different voltage levels. This component is particularly useful in mixed-voltage systems where I²C-bus signals need to be transmitted reliably across varying power domains.  

Featuring bidirectional voltage translation, the PCA9500PW supports voltage ranges from 1.0V to 5.5V, making it compatible with a wide array of microcontrollers, sensors, and peripherals. Its built-in buffering capability enhances signal integrity, reducing noise and signal degradation over long bus lines.  

The device operates as a hot-swappable repeater, allowing for dynamic insertion and removal of I²C devices without disrupting the bus. It also includes rise-time accelerators to improve performance in capacitive load environments. With its compact TSSOP-8 package, the PCA9500PW is well-suited for space-constrained applications.  

Key applications include industrial automation, consumer electronics, and embedded systems where reliable I²C communication is essential. Its robust design ensures compliance with I²C-bus standards while providing a simple, cost-effective solution for voltage-level translation.  

Engineers value the PCA9500PW for its ease of integration, low power consumption, and ability to maintain signal integrity across diverse voltage environments.

Application Scenarios & Design Considerations

8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM

Alternative Part Number

  • PCF8574T --: I2C 8-bit I/O expander with similar function; NXP is the successor of Philips, so it is a natural drop-in family alternative.
  • PCF8574APW --: Same I2C I/O expander family in TSSOP package, pin-compatible with PCA9500PW and widely available.
  • TCA9535PWR --: 16-bit I2C I/O expander offering more I/O and similar interface; suitable when extra ports are acceptable.

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