PCA8574/PCA8574A Remote 8-bit I/O Expander For I2C-bus With Interrupt

The PCA8574 PCA8574A provide general purpose remote I/O expansion for most Microcontroller families via the two-line bidirectional I2C-bus (serial Clock (SCL), serial data (SDA)). The devices consist of an 8-bit quasi-bidirectional port and an I2C-bus Interface The PCA8574 PCA8574A have low current consumption and include latched outputs with 25 mA high current drive capability for directly driving LEDs The PCA8574 PCA8574A also possess an interrupt line (INT) that CAN be connected to the interrupt Logic of the Microcontroller By sending an interrupt signal on this line, the remote I/O CAN inform the Microcontroller if there is incoming data on its ports without having to communicate via the I2C-bus. The internal Power-On Reset (POR) initializes the I/Os as inputs.
By NXP Semiconductors
Part Manufacturer Description Datasheet Samples
PCA8574AD,512 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO16, 7.50 MM, PLASTIC, MS-013, SOT162-1, SOP-16, Parallel IO Port
PCA8574APW,112 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO16, 4.40 MM, PLASTIC, MO-153, SOT403-1, TSSOP-16, Parallel IO Port
PCA8574ATS,112 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO20, 4.40 MM, PLASTIC, MO-152, SOT266-1, SSOP-20, Parallel IO Port
PCA8574APW,118 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO16, 4.40 MM, PLASTIC, MO-153, SOT403-1, TSSOP-16, Parallel IO Port
PCA8574TS,112 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO20, 4.40 MM, PLASTIC, MO-152, SOT266-1, SSOP-20, Parallel IO Port
PCA8574TS,118 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO20, 4.40 MM, PLASTIC, MO-152, SOT266-1, SSOP-20, Parallel IO Port
PCA8574AN,112 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDIP16, 0.300 INCH, PLASTIC, MO-001, SOT38-1, DIP-16, Parallel IO Port
PCA8574PW,112 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO16, 4.40 MM, PLASTIC, MO-153, SOT403-1, TSSOP-16, Parallel IO Port
PCA8574D,518 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO16, 7.50 MM, PLASTIC, MS-013, SOT162-1, SOP-16, Parallel IO Port
PCA8574D,512 NXP Semiconductors IC 8 I/O, PIA-GENERAL PURPOSE, PDSO16, 7.50 MM, PLASTIC, MS-013, SOT162-1, SOP-16, Parallel IO Port
PCA8574 's PackagesPCA8574 's pdf datasheet
PCA8574AD SO
PCA8574AN DIP
PCA8574APW TSSOP
PCA8574ATS SSOP
PCA8574D SO
PCA8574N DIP
PCA8574PW TSSOP
PCA8574TS SSOP

PCA8574 pdf datasheet download


PCA8574 Pinout, Pinouts
PCA8574 pinout,Pin out
This is one package pinout of PCA8574,If you need more pinouts please download PCA8574's pdf datasheet.

PCA8574 Application circuits
PCA8574 circuits
This is one application circuit of PCA8574,If you need more circuits,please download PCA8574's pdf datasheet.


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