40-Bit I/O Expander, 400 kHz, I2C, 2.3 V–5.5 V, TSSOP
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The PCA9506DGG,512 is a 40-bit I/O expander from NXP Semiconductors. This device provides 40 general purpose input/output pins controlled via the I2C bus. It operates at a maximum I2C clock frequency of 400 kHz and supports a supply voltage range of 2.3 V to 5.5 V. The component is supplied in a TSSOP package.
This I/O expander is suitable for a variety of applications requiring additional digital I/O ports. It is commonly used in systems where the microcontroller’s available I/O resources are limited, or where remote I/O control is needed.