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PCA9539PWR
+BOMIC XPND 400KHZ I2C SMBUS 24TSSOP
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ManufacturerTexas Instruments
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Mfr. Part #PCA9539PWR
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In Stock1322
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Specifications
| Attribute | Value |
| Part Status | Not For New Designs |
| Base Product Number | PCA9539 |
| DigiKey Programmable | Not Verified |
| Number of I/O | 16 |
| Interface | I2C, SMBus |
| Interrupt Output | Yes |
| Features | POR |
| Output Type | Push-Pull |
| Current - Output Source/Sink | 10mA, 25mA |
| Clock Frequency | 400 kHz |
| Voltage - Supply | 2.3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package | 24-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 24-TSSOP |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
Overview
Description
The PCA9539PWR is a 16-bit I²C-bus GPIO expander from Texas Instruments. It provides general-purpose input/output (GPIO) expansion with interrupt functionality, ideal for systems needing additional I/O pins. Key features include:
- 16 I/O Pins: Configurable as inputs or outputs.
- I²C Interface: Supports standard (100 kHz) and fast (400 kHz) modes.
- Interrupt Output: Alerts the host of input state changes.
- Low Standby Current: Suitable for power-sensitive applications.
- Wide Voltage Range: Operates from 1.65V to 5.5V, compatible with various logic levels.
Available in a TSSOP-24 package, it’s commonly used in industrial control, consumer electronics, and embedded systems for scalable I/O expansion. The PCA9539PWR simplifies system design by reducing microcontroller pin usage while offering flexible configuration via I²C commands.
For detailed specs, refer to the datasheet.
- 16 I/O Pins: Configurable as inputs or outputs.
- I²C Interface: Supports standard (100 kHz) and fast (400 kHz) modes.
- Interrupt Output: Alerts the host of input state changes.
- Low Standby Current: Suitable for power-sensitive applications.
- Wide Voltage Range: Operates from 1.65V to 5.5V, compatible with various logic levels.
Available in a TSSOP-24 package, it’s commonly used in industrial control, consumer electronics, and embedded systems for scalable I/O expansion. The PCA9539PWR simplifies system design by reducing microcontroller pin usage while offering flexible configuration via I²C commands.
For detailed specs, refer to the datasheet.
Equivalent
Equivalent products to the PCA9539PWR (16-bit I²C I/O expander) include:
- PCA9539PW (same specs, different package suffix)
- PCA9539DWR (SOIC package)
- TCA9539PWR (similar functionality, Texas Instruments)
- MAX7313AUG+ (Maxim Integrated, 16-bit I/O expander)
- MCP23017-E/SP (Microchip, 16-bit I²C I/O expander)
Check datasheets for exact compatibility in voltage, speed, and features.
- PCA9539PW (same specs, different package suffix)
- PCA9539DWR (SOIC package)
- TCA9539PWR (similar functionality, Texas Instruments)
- MAX7313AUG+ (Maxim Integrated, 16-bit I/O expander)
- MCP23017-E/SP (Microchip, 16-bit I²C I/O expander)
Check datasheets for exact compatibility in voltage, speed, and features.
Manufacturer
The PCA9539PWR is manufactured by Texas Instruments (TI), a leading global semiconductor company. TI specializes in designing and producing analog and embedded processing chips for various industries, including automotive, industrial, consumer electronics, and communications. Known for innovation and reliability, TI provides a wide range of integrated circuits (ICs) and solutions for electronic systems. The PCA9539PWR is an I/O expander IC, part of TI's extensive portfolio of interface and logic products.
Application
The PCA9539PWR is an I²C/SMBus GPIO expander used in various applications:
- Industrial Control: Expands I/O for sensors, switches, and relays.
- Consumer Electronics: Manages buttons, LEDs, and displays in smart devices.
- Automotive Systems: Controls infotainment, lighting, and climate interfaces.
- Embedded Systems: Provides extra GPIOs for microcontrollers with limited pins.
- IoT Devices: Enables scalable I/O for smart home and wearable applications.
It supports voltage translation (1.65V–5.5V) and is ideal for space-constrained designs.
- Industrial Control: Expands I/O for sensors, switches, and relays.
- Consumer Electronics: Manages buttons, LEDs, and displays in smart devices.
- Automotive Systems: Controls infotainment, lighting, and climate interfaces.
- Embedded Systems: Provides extra GPIOs for microcontrollers with limited pins.
- IoT Devices: Enables scalable I/O for smart home and wearable applications.
It supports voltage translation (1.65V–5.5V) and is ideal for space-constrained designs.
Package
The PCA9539PWR is a 16-bit I/O expander in a TSSOP-24 package. This surface-mount package has a small footprint (7.8mm x 4.4mm) with 24 pins, suitable for space-constrained applications. It operates at 1.65V to 5.5V and supports I²C communication. The "PWR" suffix indicates it's in a TSSOP (Thin Shrink Small Outline Package) variant.
