PCA9673 2 Remote 16-bit I/O expander for Fm+ I C-bus with interrupt and reset Rev. 2 29 September 2011 Product data sheet 1. General description The PCA9673 provides general purpose remote I/O expansion for most microcontroller 2 families via the two-line bidirectional bus (I C-bus) and is a part of the Fast-mode Plus family. The PCA9673 is a drop in upgrade for the PCF8575 providing higher Fast-mode Plus 2 (Fm+) I C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWM 2 dimming of LEDs, higher I C-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 (16 versus 8) are available to allow many more devices on the bus without address conflicts. The difference between the PCA9673 and the PCF8575 is that the A2 address pin is replaced by a RESET input on the PCA9673. 2 The device consists of a 16-bit quasi-bidirectional port and an I C-bus interface. The PCA9673 has a low current consumption and includes latched outputs with 25 mA 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 2 the I C-bus. The internal Power-On Reset (POR), hardware reset pin (RESET) or software reset sequence initializes the I/Os as inputs. 2. Features and benefits 2 1MHz I C-bus interface 2 Compliant with the I C-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 16-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 400 mA Active LOW open-drain interrupt output 16 programmable slave addresses using 2 address pins Readable device ID (manufacturer, device type, and revision)PCA9673 NXP Semiconductors 2 Remote 16-bit I/O expander for Fm+ I C-bus with interrupt and reset Low standby current 40 C to +85 C operation ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA Packages offered: SO24, TSSOP24, HVQFN24, DHVQFN24 3. Applications LED signs and displays Servers Industrial control Medical equipment PLCs Cellular telephones Gaming machines Instrumentation and test measurement 4. Ordering information Table 1. Ordering information Type number Topside Package mark Name Description Version PCA9673D PCA9673D SO24 plastic small outline package 24 leads body width 7.5 mm SOT137-1 PCA9673PW PCA9673PW TSSOP24 plastic thin shrink small outline package 24 leads SOT355-1 body width 4.4 mm PCA9673BQ 9673 DHVQFN24 plastic dual in-line compatible thermal enhanced very thin quad SOT815-1 flat package no leads 24 terminals body 3.5 5.5 0.85 mm PCA9673BS 9673 HVQFN24 plastic thermal enhanced very thin quad flat package no leads SOT616-1 24 terminals body 4 4 0.85 mm PCA9673 All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 2 29 September 2011 2 of 33