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PCF8575DBQR-PCF8575DBR-PCF8575DW-PCF8575PW-PCF8575PWR-PCF8575RGER
Remote 16-Bit I2C and SMBus I/O Expander with Interrupt Output 24-SSOP -40 to 85
PCF8575I2C or SMBus Master
(e.g. Processor) Peripheral Devices RESET, ENABLE, or
control inputs INT or status
outputs LEDs
SDA
SCL
INT
GND
VCC
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12Product
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PCF8575SCPS121F –JANUARY 2005–REVISED MAY 2015
PCF8575 Remote16-BITI2C AND SMBus I/O Expander
with Interrupt Output FeaturesI2Cto Parallel-Port Expander
3 DescriptionThis 16-bit I/O expander for the two-line bidirectional• Open-Drain Interrupt Output
bus (I2C) is designed for 2.5-V to 5.5-V VCC• Low Standby-Current Consumptionof 10 μA Max operation.• Compatible With Most Microcontrollers
The PCF8575 device provides general-purpose• 400-kHz FastI2C Bus remote I/O expansion for most microcontroller• Addressby Three Hardware Address Pins for Use families by way of theI2C interface [serial clockofupto Eight Devices (SCL), serial data (SDA)]. Latched Outputs With High-Current Drive The device features a 16-bit quasi-bidirectionalCapability for Directly Driving LEDs input/output (I/O) port (P07–P00, P17–P10), including Current Sourceto VCCfor Actively Drivinga High latched outputs with high-current drive capability for
directly driving LEDs. Each quasi-bidirectional I/O canat the Output used as an inputor output without the useofa• Latch-Up Performance Exceeds 100 mA Per data-direction control signal.At power on, the I/OsJESD 78, ClassII are high.In this mode, onlya current sourceto VCCis• ESD Protection Exceeds JESD22 active. 2000-V Human-Body Model
Device Information(1)– 200-V Machine Model– 1000-V Charged-Device Model
2 Applications• Telecom Shelters: Filter Units• Servers• Routers (Telecom Switching Equipment)• Personal Computers (1) Forall available packages, see the orderable addendumat• Personal Electronics the endofthe data sheet. Industrial Automation Products with GPIO-Limited Processors
Simplified Schematic
