PCA9674APW ,Remote 8-bit I/O expander for Fm+ I虏C-bus with interruptGeneral descriptionThe PCA9674/74A provides general-purpose remote I/O expansion via the two-wire 2 ..
PCA9674BS ,Remote 8-bit I/O expander for Fm+ I虏C-bus with interruptapplications and the latched output ports have 25 mA high current sink drive capability for directl ..
PCA9674D ,Remote 8-bit I/O expander for Fm+ I虏C-bus with interruptFeatures and benefits2 I C-bus to parallel port expander2 2 1MHz I C-bus interface (Fast-mode Plu ..
PCA9674PW ,Remote 8-bit I/O expander for Fm+ I虏C-bus with interrupt PCA9674; PCA9674A2Remote 8-bit I/O expander for Fm+ I C-bus with interruptRev. 7 — 30 May 2013 Pro ..
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PCA9674ABS-PCA9674AD-PCA9674APW-PCA9674BS-PCA9674D-PCA9674PW
Remote 8-bit I/O expander for Fm+ I虏C-bus with interrupt
1. General descriptionThe PCA9674/74A provides general-purpose remote I/O expansion via the two-wire
bidirectional I2 C-bus (serial clock (SCL), serial data (SDA)).
The devices consist of eight quasi-bidirectional ports, 1 MHz I2 C-bus Fast-mode Plus
(Fm+) family interface, with high speed data transfer it can support PWM dimming of
LEDs, and higher I2 C-bus drive 30 mA for more devices can be on the bus without the
need for bus buffers. Three hardware address inputs and interrupt output operating
between 2.3 V and 5.5 V. The quasi-bidirectional port can be independently assigned as
an input to monitor interrupt status or keypads, or as an output to activate indicator
devices such as LEDs. The system master can read from the input port or write to the
output port through a single register.
The low current consumption of 4.5 A (typical, static) is great for mobile applications and
the latched output ports have 25 mA high current sink drive capability for directly driving
LEDs.
The PCA9674 and PCA9674A are identical except for the different, non-overlapping slave
address. The three hardware selectable address pins can be decode to 64 addresses for
the PCA9674 and 62 addresses for the PCA9674A, so there can be up to 126 of these I/O
expanders PCA9674/74A together on the same I2 C-bus without the need for bus buffers,
supporting up to 1008 I/Os (for example, 1008 LEDs).
The active LOW open-drain interrupt output (INT) can be connected to the interrupt logic
of the microcontroller and is activated when any input state differs from its corresponding
input port register state. It is used to indicate to the microcontroller that an input state has
changed and the device needs to be interrogated without the microcontroller continuously
polling the input register via the I2 C-bus.
The internal Power-On Reset (POR) initializes the I/Os as inputs with a weak internal
pull-up 100 A current source.
2. Features and benefitsI2 C-bus to parallel port expander 1MHz I2 C-bus interface (Fast-mode Plus I2 C-bus) SDA with 30 mA sink capability for 4000 pF buses Operating supply voltage 2.3 V to 5.5 V with 5.5 V tolerant I/Os held to VDD with
100 A current source 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
PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2 C-bus with interrupt
Rev. 7 — 30 May 2013 Product data sheet
NXP Semiconductors PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2 C-bus with interrupt Active LOW open-drain interrupt output Sixty-four programmable slave addresses using three address pins
(PCA9674A- sixty-two) Readable device ID (manufacturer, device type, and revision) Software Reset pushes the device back to Power-On Reset state Low standby current (4.5 A typical) 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: SO16, TSSOP16, HVQFN16
3. Applications LED signs and displays Servers Key pads Industrial control Medical equipment PLCs Cellular telephones Mobile devices Gaming machines Instrumentation and test measurement
NXP Semiconductors PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2 C-bus with interrupt
4. Ordering information
4.1 Ordering options
Table 1. Ordering informationPCA9674BS 674 HVQFN16 plastic thermal enhanced very thin quad flat package; no leads;
16 terminals; body 33 0.85 mm
SOT758-1
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;
body width 4.4 mm
SOT403-1
PCA9674APW 9674A
Table 2. Ordering optionsPCA9674BS PCA9674BS,118 HVQFN16 Reel 13” Q1/T1
*standard mark SMD
6000 Tamb= 40 C to +85C
PCA9674ABS PCA9674ABS,118 HVQFN16 Reel 13” Q1/T1
*standard mark SMD
6000 Tamb= 40 C to +85C
PCA9674D PCA9674D,512 SO16 Standard marking *
tube dry pack
1920 Tamb= 40 C to +85C
PCA9674D,518 SO16 Reel 13” Q1/T1
*standard mark SMD dry pack
1000 Tamb= 40 C to +85C
PCA9674AD PCA9674AD,512 SO16 Standard marking *
tube dry pack
1920 Tamb= 40 C to +85C
PCA9674AD,518 SO16 Reel 13” Q1/T1
*standard mark SMD dry pack
1000 Tamb= 40 C to +85C
PCA9674PW PCA9674PW,112 TSSOP16 Standard marking *
IC’s tube- DSC bulk pack
2400 Tamb= 40 C to +85C
PCA9674PW,118 TSSOP16 Reel 13” Q1/T1
*standard mark SMD
2500 Tamb= 40 C to +85C
PCA9674APW PCA9674APW,112 TSSOP16 Standard marking *
IC’s tube- DSC bulk pack
2400 Tamb= 40 C to +85C
PCA9674APW,118 TSSOP16 Reel 13” Q1/T1
*standard mark SMD
2500 Tamb= 40 C to +85C
NXP Semiconductors PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2 C-bus with interrupt
5. Block diagramNXP Semiconductors PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2 C-bus with interrupt
6. Pinning information
6.1 Pinning
6.2 Pin description
Table 3. Pin descriptionAD0 1 15 address input 0
AD1 2 16 address input 1
AD2 3 1 address input 2 4 2 quasi-bidirectional I/O0 5 3 quasi-bidirectional I/O1 6 4 quasi-bidirectional I/O2 7 5 quasi-bidirectional I/O3
VSS 86[1] supply ground
