PCF8575 Remote 16-Bit I2C and SMBus I/O Expander with Interrupt Output | TI.com

PCF8575
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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/Os (GPIOs) Email Download to Excel
Part number Order Number of I/Os VCC (Min) (V) VCC (Max) (V) Frequency (Max) (kHz) Features Addresses Rating Operating temperature range (C) Package Group
PCF8575 Order now 16     2.5     5.5     400     Interrupt pin     8     Catalog     -40 to 85     SOIC | 24
SSOP | 24
SSOP | 24
TSSOP | 24
TVSOP | 24
VQFN | 24    
PCF8574 Order now 8     2.5     6     100     Interrupt pin     8     Catalog     -40 to 85     PDIP | 16
SOIC | 16
TSSOP | 20
TVSOP | 16
TVSOP | 20
VQFN | 16
VQFN | 20