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I2C 通用 I/O (GPIO)

PCF8575

現行

具中斷功能的 16 位元 2.5 至 5.5-V I2C/SMBus I/O 擴展器

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產品規格表

PCF8575

現行
產品規格表 立即訂購

產品詳細資料

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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類型 標題 日期
* Data sheet PCF8575 Remote16-BIT I2 C AND SMBus I/O Expander with Interrupt Output datasheet (Rev. I) PDF | HTML 2024年 8月 22日
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 2024年 7月 3日
Application note I2C Dynamic Addressing 2019年 4月 25日
Application note Choosing the Correct I2C Device for New Designs PDF | HTML 2016年 9月 7日
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 2015年 12月 2日
Application note Understanding the I2C Bus PDF | HTML 2015年 6月 30日
Application note Maximum Clock Frequency of I2C Bus Using Repeaters 2015年 5月 15日
Application note I2C Bus Pull-Up Resistor Calculation PDF | HTML 2015年 2月 13日
Application note Programming Fun Lights With TI's TCA6507 2007年 11月 30日
More literature PCF8574 and PCF8574A Application Clip 2004年 8月 18日
More literature I2C Application Clip 2004年 7月 19日
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 2004年 7月 8日
More literature I2C and Serial Bus Devices Application Clip 2003年 7月 10日

設計與開發

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模擬型號

PCF8575 IBIS Model

SCPM003.ZIP (60 KB) - IBIS Model
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
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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