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NXP Semiconductors Electronic Components Datasheet

PCA9671D Datasheet

Remote 16-bit I/O expander

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PCA9671
Remote 16-bit I/O expander for Fm+ I2C-bus with reset
Rev. 3 — 29 September 2011
Product data sheet
1. General description
The PCA9671 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
(Fm+) family.
The PCA9671 is a drop in upgrade for the PCF8575 providing higher 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) to allow many more devices on the bus without address conflicts.
The difference between the PCA9671 and the PCF8575 is that the interrupt output on the
PCF8575 is replaced by a RESET input on the PCA9671.
The device consists of a 16-bit quasi-bidirectional port and an I2C-bus interface. The
PCA9671 has a low current consumption and includes latched outputs with 25 mA high
current drive capability for directly driving LEDs. The internal Power-On Reset (POR),
hardware reset pin (RESET) 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-mode and Standard-mode
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 reset input
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
Packages offered: SO24, TSSOP24, HVQFN24, DHVQFN24


NXP Semiconductors Electronic Components Datasheet

PCA9671D Datasheet

Remote 16-bit I/O expander

No Preview Available !

NXP Semiconductors
PCA9671
Remote 16-bit I/O expander for Fm+ I2C-bus with reset
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
mark
Package
Name
Description
PCA9671D PCA9671D SO24
plastic small outline package; 24 leads; body width 7.5 mm
PCA9671PW PCA9671PW TSSOP24 plastic thin shrink small outline package; 24 leads;
body width 4.4 mm
PCA9671BQ 9671
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
PCA9671BS 9671
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
PCA9671
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 September 2011
© NXP B.V. 2011. All rights reserved.
2 of 33


Part Number PCA9671D
Description Remote 16-bit I/O expander
Maker NXP
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PCA9671D Datasheet PDF






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