PCF8575CPW Part Information

Details for PCF8575CPW by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs

Part Description

This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 4.5-V to 5.5-V VCC operation. The PCF8575C provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface serial clock (SCL) and serial data (SDA). The device features a 16-bit quasi-bidirectional input/output (I/O) port (P07–P00, P17–P10), including latched outputs with high-current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. At power on, the I/Os are in 3-state mode. The strong pullup to VCC allows fast-rising edges into heavily loaded outputs. This device turns on when an output is written high and is switched off by the negative edge of SCL. The I/Os should be high before being used as inputs. After power on, as all the I/Os are set to 3-state, all of them can be used as inputs. Any change in setting of the I/Os as either inputs or outputs can be done with the write mode. If a high is applied externally to an I/O that has been written earlier to low, a large current (IOL) flows to GND.

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Part Features

  • 400-kHz Fast I2 C Bus
  • Address by Three Hardware Address Pins for Use of up to Eight Devices
  • Compatible With Most Microcontrollers
  • ESD Protection Exceeds JESD 22
  • I2 C to Parallel-Port Expander
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
  • Low Standby-Current Consumption of 10 u03bcA Maximum
  • Open-Drain Interrupt Output

Part Specifications

Chip Configuration 16bit
Bus Frequency 400kHz
IC Interface Type I2C Parallel SMBus
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
Interface Case Style TSSOP
No. of Pins 24Pins
No. of I/O's 16I/O's
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Base Number 8575
Communication Function I/O Expander
Control Interface I2C Parallel
IC Generic Number 8575
Logic Function Number 8575
No. of Bits 16bit
Operating Temperature Max 85°C
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +85°C
Supply Current 10µA
Supply Voltage Range 4.5V to 5.5V
Termination Type Surface Mount Device
RoHS Compliant

Alternative Part Descriptions

  • I2C and SMBus Low Power I/O Expander 24-Pin TSSOP Tube | Avnet America
  • 16-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt | Texas Instruments

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