| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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8,272 pcs
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8272 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The PCA9539D,118 from NXP Semiconductors is a 16-bit CMOS device providing General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications. It is suitable for adding I/O for components like ACPI power switches, sensors, push buttons, and LEDs.
This I/O expander features two 8-bit configuration registers for input/output selection, input and output registers, and a polarity inversion register. The device operates over a supply voltage range of 2.3V to 5.5V and supports a clock frequency of up to 400 kHz. The I/Os are 5V tolerant.
The PCA9539D,118 includes an open-drain interrupt output that activates when an input state changes, signaling the system master. It also has a power-on reset function and a dedicated RESET pin for re-initializing the device without de-powering. The device is supplied in a 24-SOIC package and is designed for surface mount.
Two hardware pins (A0, A1) allow for address variation, enabling up to four devices to share the same I2C-bus/SMBus. The PCA9539R variant differs slightly in its RESET pin functionality, preserving I/O states during a bus reset.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.15 | $1.15 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating supply voltage range is 2.3V to 5.5V.
The operating temperature range is -40°C to 85°C.
It is supplied in a 24-SOIC (0.295", 7.50mm Width) package for surface mounting.
Yes, it features an open-drain interrupt output.
The device supports a clock frequency of 400 kHz.