The PCA9675 provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus family.
The PCA9675 is a drop in upgrade for the PCF8575 providing higher Fast-mode Plus (Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWM dimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so that many more devices can be on the bus without the need for bus buffers, higher total package sink capacity (400 mA versus 100 mA) that supports having all 25 mA LEDs on at the same time and more device addresses (64 versus 8) are available to allow many more devices on the bus without address conflicts.
The device consists of a 16-bit quasi-bidirectional port and an I2C-bus interface. The PCA9675 has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs.
It also possesses an interrupt line (INT) which 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) or software reset sequence initializes the I/Os as inputs.
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| PCA9675D | PCA9675D,112 | 9352 806 68112 | Volume production | SOT137 | Tube | Standard Marking | |
| PCA9675D | PCA9675D,118 | 9352 806 68118 | Volume production | SOT137 | Reel Pack, SMD, 13" | Standard Marking | |
| PCA9675DB | PCA9675DB,112 | 9352 832 29112 | Volume production | SOT340-1
(SSOP24) | Tube | Standard Marking | |
| PCA9675DB | PCA9675DB,118 | 9352 832 29118 | Volume production | SOT340-1
(SSOP24) | Reel Pack, SMD, 13" | Standard Marking | |
| PCA9675DK | PCA9675DK,118 | 9352 832 28118 | Volume production | SOT556-1
(SSOP24) | Reel Pack, SMD, 13" | Standard Marking | |
| PCA9675PW | PCA9675PW,112 | 9352 806 67112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | |
| PCA9675PW | PCA9675PW,118 | 9352 806 67118 | Volume production | SOT355-1
(TSSOP24) | Reel Pack, SMD, 13" | Standard Marking |
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| PCA9675D | PCA9675D,112 | PCA9675D |
| Always Pb-free | ||||
| PCA9675D | PCA9675D,118 | PCA9675D |
| Always Pb-free | ||||
| PCA9675DB | PCA9675DB,112 | PCA9675DB |
| Always Pb-free | ||||
| PCA9675DB | PCA9675DB,118 | PCA9675DB |
| Always Pb-free | ||||
| PCA9675DK | PCA9675DK,118 | PCA9675DK |
| Always Pb-free | ||||
| PCA9675PW | PCA9675PW,112 | PCA9675PW |
| Always Pb-free | ||||
| PCA9675PW | PCA9675PW,118 | PCA9675PW |
| Always Pb-free |
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| PCA9675D | 9352 806 68112 | PCA9675D,112 | Order samples | |||||||
| PCA9675D | 9352 806 68118 | PCA9675D,118 | 1.4800 | NA | DIGI-KEY CORPORATION | 1,794 | 11/20/2009 | Buy online | not available | |
| PCA9675DB | 9352 832 29112 | PCA9675DB,112 | NA | DIGI-KEY CORPORATION | 305 | 11/20/2009 | Buy online | not available | ||
| PCA9675DB | 9352 832 29118 | PCA9675DB,118 | not available | |||||||
| PCA9675DK | 9352 832 28118 | PCA9675DK,118 | NA | DIGI-KEY CORPORATION | 2,500 | 11/20/2009 | Buy online | Order samples | ||
| PCA9675PW | 9352 806 67112 | PCA9675PW,112 | not available | |||||||
| PCA9675PW | 9352 806 67118 | PCA9675PW,118 | NA | FUTURE ELECTRONICS | 2,500 | 11/19/2009 | Buy online | Order samples |
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Application Notes
Support Documents
| Type number | Package | Operating temp.(Cel) | I²C-bus interface | # of Bits | Interrupt output | Source Current per bit(mA) | I²C-bus(kHz) | Operating voltage(VDC) | Weak Pull-Up Current Source | Max Sink Current per bit(mA) | # of Addresses | Max Sink Current per package(mA) | Reset input pin |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9675D | SOT137
| -40~85 | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 16 | yes | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 64 | 400 | no |
| PCA9675DB | SOT340-1
(SSOP24) | -40~85 | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 16 | yes | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 64 | 400 | no |
| PCA9675DK | SOT556-1
(SSOP24) | -40~85 | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 16 | yes | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 64 | 400 | no |
| PCA9675PW | SOT355-1
(TSSOP24) | -40~85 | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 16 | yes | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 64 | 400 | no |
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