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12,914 pcs
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12914 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The Texas Instruments PCA9539DW is a 16-bit I/O expander designed for interfacing with I2C and SMBus communication protocols. It supports a wide operating voltage range from 2.3V to 5.5V, making it versatile for various system designs. The device operates at a maximum clock frequency of 400 kHz, ensuring efficient data transfer.
Key features include 16 I/O pins, an interrupt output, and a reset input. The I/O ports are 5V tolerant, and the device offers latched outputs with high-current drive capability suitable for directly driving LEDs. It is available in a 24-SOIC package, designed for surface mounting.
This I/O expander is compatible with most microcontrollers and offers features like polarity inversion registers and addressability via two hardware address pins, allowing up to four devices on the same bus. Its low standby-current consumption of 1 µA max makes it suitable for power-sensitive applications.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.84 | $1.84 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range is 2.3V to 5.5V.
The PCA9539DW is available in a 24-SOIC package.
The operating temperature range is -40°C to 85°C.
The maximum clock frequency is 400 kHz.
Yes, it features an open-drain active-low interrupt output.
The PCA9539DW provides 16 I/O pins.