PCA9674/74A 2 Remote 8-bit I/O expander for Fm+ I C-bus with interrupt Rev. 05 15 June 2009 Product data sheet 1. General description The PCA9674/74A provide general purpose remote I/O expansion for most 2 microcontroller families via the two-line bidirectional bus (I C-bus) and is a part of the Fast-mode Plus (Fm+) family. The PCA9674/74A is a drop-in upgrade for the PCF8574/74A providing higher Fast-mode 2 Plus 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 (200 mA versus 100 mA) that supports having all 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 conicts. 2 The devices consist of an 8-bit quasi-bidirectional port and an I C-bus interface. The PCA9674/74A have low current consumption and include latched outputs with 25 mA high current drive capability for directly driving LEDs. They 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 2 the I C-bus. The internal Power-On Reset (POR) or Software Reset sequence initializes the I/Os as inputs. 2. Features 2 n 1 MHz I C-bus interface 2 n Compliant with the I C-bus Fast and Standard modes n SDA with 30 mA sink capability for 4000 pF buses n 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os n 8-bit remote I/O pins that default to inputs at power-up n Latched outputs with 25 mA sink capability for directly driving LEDs n Total package sink capability of 200 mA n Active LOW open-drain interrupt output n 64 programmable slave addresses using 3 address pins n Readable device ID (manufacturer, device type, and revision) n Low standby current n - 40 C to +85 C operation n ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101PCA9674/74A NXP Semiconductors 2 Remote 8-bit I/O expander for Fm+ I C-bus with interrupt n Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA n Packages offered: SO16, SSOP20, TSSOP16, HVQFN16 3. Applications n LED signs and displays n Servers n Industrial control n Medical equipment n PLCs n Cellular telephones n Gaming machines n Instrumentation and test measurement 4. Ordering information Table 1. Ordering information Type number Topside Package mark Name Description Version PCA9674BS 674 HVQFN16 plastic thermal enhanced very thin quad at package no leads SOT758-1 16 terminals body 3 3 0.85 mm PCA9674ABS 74A PCA9674D PCA9674D SO16 plastic small outline package 16 leads body width 7.5 mm SOT162-1 PCA9674AD PCA9674AD PCA9674PW PCA9674 TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm PCA9674APW PA9674A PCA9674TS PCA9674 SSOP20 plastic shrink small outline package 20 leads SOT266-1 body width 4.4 mm PCA9674ATS PA9674A PCA9674 PCA9674A 5 NXP B.V. 2009. All rights reserved. Product data sheet Rev. 05 15 June 2009 2 of 32