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NXP Semiconductors Electronic Components Datasheet

PCA9675PW Datasheet

Remote 16-bit I/O expander

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PCA9675
Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
Rev. 2 — 3 October 2011
Product data sheet
1. General description
The PCA9675 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 PCA9675 is a drop in upgrade for the PCF8575 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
(400 mA versus 100 mA) that supports having all 25 mA 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 conflicts.
The device consists of a 16-bit quasi-bidirectional port and an I2C-bus interface. The
PCA9675 has a low current consumption and includes latched outputs with 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
the I2C-bus. The internal Power-On Reset (POR) or software reset sequence initializes
the I/Os as inputs.
2. 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
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
64 programmable slave addresses using 3 address pins
Readable device ID (manufacturer, device type, and revision)
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


NXP Semiconductors Electronic Components Datasheet

PCA9675PW Datasheet

Remote 16-bit I/O expander

No Preview Available !

NXP Semiconductors
PCA9675
Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
Packages offered: SO24, TSSOP24, HVQFN24, DHVQFN24
3. Applications
LED signs and displays
Servers
Industrial control
PLCs
Cellular telephones
Gaming machines
Instrumentation and test measurement
4. Ordering information
Table 1. Ordering information
Type number Topside
mark
Package
Name
Description
PCA9675D PCA9675D SO24
plastic small outline package; 24 leads; body width 7.5 mm
PCA9675PW PCA9675PW TSSOP24 plastic thin shrink small outline package; 24 leads;
body width 4.4 mm
PCA9675BQ 9675
DHVQFN24 plastic dual in-line compatible thermal enhanced very thin quad
flat package; no leads; 24 terminals; body 3.5 5.5 0.85 mm
PCA9675BS 9675
HVQFN24 plastic thermal enhanced very thin quad flat package; no leads;
24 terminals; body 4 4 0.85 mm
Version
SOT137-1
SOT355-1
SOT815-1
SOT616-1
PCA9675
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 3 October 2011
© NXP B.V. 2011. All rights reserved.
2 of 34


Part Number PCA9675PW
Description Remote 16-bit I/O expander
Maker NXP
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