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PCA9672
Datasheet
General description
The PCA9672 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 PCA9672 is a drop-in upgrade for the PCF8574 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 (200 mA versus 100 mA) that supports having all LEDs on at the same time and more device addresses (16 versus 8) are available to allow many more devices on the bus without address conflicts.
The difference between the PCA9672 and the PCF8574 is that the A2 address pin is replaced by the RESET input on the PCA9672.
The device consists of an 8-bit quasi-bidirectional port and an I2C-bus interface. The PCA9672 has low current consumption and include latched outputs with 25 mA high current drive capability for directly driving LEDs.
The PCA9672 possesses 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), hardware reset pin (RESET), or Software Reset sequence initializes the I/Os as inputs.
Features
- 1 MHz I2C-bus interface
- Compliant with the I2C-bus Fast and Standard modes
- SDA with 30 mA sink capability for 4000 pF buses
- 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
- 8-bit remote I/O pins that default to inputs at power-up
- Latched outputs with 25 mA sink capability for directly driving LEDs
- Total package sink capability of 200 mA
- Active LOW open-drain interrupt output
- 16 programmable slave addresses using 2 address pins
- Readable device ID (manufacturer, device type, and revision) Low standby current
- -40 Cel to +85 Cel operation
- ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
- Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA
- Packages offered: SO16, TSSOP16, HVQFN16
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| PCA9672BS | PCA9672BS-T | 9352 827 45118 | Volume production | SOT758-1
(HVQFN16) | Reel Pack, SMD, 13" | Standard Marking | PCA9672BS
| |
| PCA9672D | PCA9672D | 9352 827 46512 | Volume production | SOT162-1
(SO16) | Tube Dry Pack | Standard Marking | PCA9672D
| Always Pb-free |
| PCA9672D | PCA9672D-T | 9352 827 46518 | Volume production | SOT162-1
(SO16) | Reel Dry Pack, SMD, 13" | Standard Marking | PCA9672D
| Always Pb-free |
| PCA9672PW | PCA9672PW | 9352 827 47112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | PCA9672PW
| Always Pb-free |
| PCA9672PW | PCA9672PW-T | 9352 827 47118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking | PCA9672PW
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| PCA9672BS | 9352 827 45118 | Order samples | ||||||
| PCA9672D | 9352 827 46512 | not available | ||||||
| PCA9672D | 9352 827 46518 | NA | DIGI-KEY CORPORATION | 1,000 | 8/5/2008 | Buy online | Order samples | |
| NA | DIGI-KEY CORPORATION | 888 | 8/5/2008 | Buy online | ||||
| PCA9672PW | 9352 827 47112 | NA | DIGI-KEY CORPORATION | 1,504 | 8/5/2008 | Buy online | not available | |
| PCA9672PW | 9352 827 47118 | Order samples |
Applications
- LED signs and displays
- Servers
- Industrial control
- Medical equipment
- PLCs
- Cellular telephones
- Gaming machines
- Instrumentation and test measurement
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Technical documents
Application Notes
AN10441_1;
Level shifting techniques in I (20-Jun-07)
Support Documents
75011212;
I2C 2002-1A Evaluation Board Kit (01-Mar-03)
UM10204_3;
I2C-bus specification and user manual (26-Jun-07)
Parametrics/similar products
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9672BS | SOT758-1
(HVQFN16) | -40~85 | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 8 | yes | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 16 | 200 | yes |
| PCA9672D | SOT162-1
(SO16) | -40~85 | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 8 | yes | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 16 | 200 | yes |
| PCA9672PW | SOT403-1
(TSSOP16) | -40~85 | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 8 | yes | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 16 | 200 | yes |
Similar products
PCA9672 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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