Startseite Schnittstelle I2C & I3C ICs I2C Universal-I/OS (GPIOs)
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I2C Universal-I/OS (GPIOs)

PCF8575

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16-Bit 2,5- bis 5,5-V I2C/SMBus E/A-Expander mit Interrupt

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Datenblatt

PCF8575

AKTIV
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Produktdetails

Number of I/Os 16 Features Interrupt pin Supply voltage (min) (V) 2.5 Supply voltage (max) (V) 5.5 Addresses 8 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
Number of I/Os 16 Features Interrupt pin Supply voltage (min) (V) 2.5 Supply voltage (max) (V) 5.5 Addresses 8 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
SOIC (DW) 24 159.65 mm² 15.5 x 10.3 SSOP (DB) 24 63.96 mm² 8.2 x 7.8 SSOP (DBQ) 24 51.9 mm² 8.65 x 6 TSSOP (PW) 24 49.92 mm² 7.8 x 6.4 TVSOP (DGV) 24 32 mm² 5 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4
  • I2C to parallel-port expander
  • Open-drain interrupt output
  • Low standby-current consumption of 10µA maximum
  • Compatible with most microcontrollers
  • 400kHz 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 100mA Per JESD 78, class II
  • ESD Protection exceeds JESD 22
    • 2000V Human-body model
    • 200V Machine model
    • 1000V Charged-device model
  • I2C to parallel-port expander
  • Open-drain interrupt output
  • Low standby-current consumption of 10µA maximum
  • Compatible with most microcontrollers
  • 400kHz 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 100mA Per JESD 78, class II
  • ESD Protection exceeds JESD 22
    • 2000V Human-body model
    • 200V Machine model
    • 1000V Charged-device model

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

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

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Typ Titel Datum
* Data sheet PCF8575 Remote16-BIT I2 C AND SMBus I/O Expander with Interrupt Output datasheet (Rev. I) PDF | HTML 22 Aug 2024
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 Jul 2024
Application note I2C Dynamic Addressing 25 Apr 2019
Application note Choosing the Correct I2C Device for New Designs PDF | HTML 07 Sep 2016
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dez 2015
Application note Understanding the I2C Bus PDF | HTML 30 Jun 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters 15 Mai 2015
Application note I2C Bus Pull-Up Resistor Calculation PDF | HTML 13 Feb 2015
Application note Programming Fun Lights With TI's TCA6507 30 Nov 2007
More literature PCF8574 and PCF8574A Application Clip 18 Aug 2004
More literature I2C Application Clip 19 Jul 2004
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
More literature I2C and Serial Bus Devices Application Clip 10 Jul 2003

Design und Entwicklung

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PCF8575 IBIS Model

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOIC (DW) 24 Ultra Librarian
SSOP (DB) 24 Ultra Librarian
SSOP (DBQ) 24 Ultra Librarian
TSSOP (PW) 24 Ultra Librarian
TVSOP (DGV) 24 Ultra Librarian
VQFN (RGE) 24 Ultra Librarian
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