PCA9672D
Remote 8-bit I/O expander for Fm I²C-bus with interrupt and reset
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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 and benefits
- 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
Applications
- LED signs and displays
- Servers
- Industrial control
- Medical equipment
- PLCs
- Cellular telephones
- Gaming machines
- Instrumentation and test measurement
- Series PCA9672
Remote 8-bit I/O expander for Fm I²C-bus with interrupt and reset
- Parametric search all I2C general purpose I/O
All information on this product information page is subject to the subsequent disclaimers:
Parametrics of this product
| Type number | Package | I2C-bus interface | Number of bits | 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 | Enable | Operating Temperature(Cel) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9672D | SOT162-1 (SO16) | Fast Mode Plus 30 mA SDA outputs for 4000 pF bus | 8 | 0.1 | 1000 | 2.3~5.5 | yes | 25 | 16 | 200 | yes | -40~85 | -40~85 |
Similar products
- Series PCA9672
- Parametric search all I<sup>2</sup>C general purpose I/O
- Parametrics series
Package
Outline drawing
| Package Version | Package Name | Package Description | Reference Codes | Issue Date |
|---|---|---|---|---|
| SOT162-1 | SO16 | plastic small outline package; 16 leads; body width 7.5 mm | MS-013 (JEDEC); 075E03 (IEC); | 2003-02-19 |
Quality, reliability & chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree conversion date | RHF | IFR (FIT) | MTBF (hours) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|
| PCA9672D | PCA9672D,512 | PCA9672D |  | Always Pb-free |  | 2.0 | 5.0E8 | 1 | 2 |
| PCA9672D | PCA9672D,518 | PCA9672D | | Always Pb-free | | 2.0 | 5.0E8 | 1 | 2 |
Documentation for this product
| File name | Title | Type | Format | Date |
|---|---|---|---|---|
| PCA9672 | Remote 8-bit I/O expander for Fm I²C-bus with interrupt and reset | Data sheet | 2007-07-06 | |
| AN10441 | Level shifting techniques in I2C-bus design | Application note | 2007-06-20 | |
| AN256 | PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus | Application note | 2009-03-23 | |
| AN10814 | Driving stepper motors using NXP I2C-bus GPIO expanders | Application note | 2011-10-24 | |
| 75016543 | Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances | Brochure | 2008-06-01 | |
| 75016535 | Versatile, easy-to-use GPIO expanders; NXP 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 | Leaflet | 2008-08-01 | |
| 75017144 | I2C Selection Guide 2H 2011 | Leaflet | 2011-09-29 | |
| UM10204 | I2C-bus specification and user manual | User manual | 2007-06-26 | |
| UM10206 | I2C Demonstration Board 2005-1 Quick Start Guide | User manual | 2006-06-13 | |
| UM10267 | PCA9698 demonstration board OM6281 | User manual | 2008-09-26 | |
| UM10204_JA | I2C-bus specification and user manual | User manual | 2013-04-03 |
Support links
- IBIS and HSPICE Model (standardics.nxp.com/support/tools/)
Ordering & availability
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