Remote 16-Bit I2C and SMBus I/O Expander with Interrupt Output - PCF8575

PCF8575 (ACTIVE)

Remote 16-Bit I2C and SMBus I/O Expander with Interrupt Output

 

Description

This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 5.5-V VCC operation.

The PCF8575 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), 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 high. In this mode, only a current source to VCC is active.

Features

  • I2C to Parallel-Port Expander
  • Open-Drain Interrupt Output
  • Low Standby-Current Consumption of 10 µA Max
  • Compatible With Most Microcontrollers
  • 400-kHz Fast I2C Bus
  • Address by Three Hardware Address Pins for Use
    of up to Eight Devices
  • Latched Outputs With High-Current Drive
    Capability for Directly Driving LEDs
  • Current Source to VCC for Actively Driving a High
    at the Output
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model
    • 200-V Machine Model
    • 1000-V Charged-Device Model

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Parametrics Compare all products in I2C General Purpose I/O (GPIO)

 
Voltage Nodes (V)
fSCLK (Max) (MHz)
VCC (Min) (V)
Max Frequency (kHz)
VCC (Max) (V)
I2C Address
Number of I/Os
Rating
Operating Temperature Range (C)
Package Group
Pin/Package
PCF8575 PCF8574 TCA9534A TCA9535
5.5
3.6
2.7
2.5   
5
3.3   
1.8
2.5
3.3
5   
1.8
2.7
3.3
3.6
5   
0.4    0.1    0.4    0.4   
2.5    2.5    1.65    1.65   
400    100    400    400   
5.5    6    5.5    5.5   
0100 xxx    0100 xxx    0111 xxx    0100 xxx   
16    8    8    16   
Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
SOIC
SSOP
SSOP
TSSOP
TVSOP
VQFN   
PDIP
SOIC
TSSOP
TVSOP
TVSOP
VQFN
VQFN   
SOIC
TSSOP   
SSOP
TSSOP
VQFN
WQFN   
24SOIC
24SSOP
24SSOP
24TSSOP
24TVSOP
24VQFN   
16PDIP
16SOIC
16TVSOP
16VQFN
20TSSOP
20TVSOP
20VQFN   
16SOIC
16TSSOP   
24SSOP
24TSSOP
24VQFN
24WQFN