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I2C、I3C 與 SPI IC
I2C 與 SPI 通用 I/O (GPIO)

TCA9554

現行

具中斷、弱推拉和配置暫存器的 8 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器

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產品規格表

TCA9554

現行
產品規格表 立即訂購

產品詳細資料

Number of I/Os 8 Features Configuration registers, Interrupt pin Addresses 8 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
Number of I/Os 8 Features Configuration registers, Interrupt pin Addresses 8 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
SSOP (DB) 16 48.36 mm² (6.2 mm × 7.8 mm) SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm) SSOP (DBQ) 16 29.4 mm² (4.9 mm × 6 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • I2C to Parallel Port Expander
  • Open-Drain Active-Low Interrupt Output
  • Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
  • 5-V Tolerant I/O Ports
  • 400-kHz Fast I2C Bus
  • Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus
  • Input and Output Configuration Register
  • Polarity Inversion Register
  • Internal Power-On Reset
  • Low Standby Current Consumption
  • Power-Up With All Channels Configured as Inputs
  • No Glitch on Power Up
  • Noise Filter on SCL/SDA Inputs
  • Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 1000-V Charged-Device Model (C101)
  • I2C to Parallel Port Expander
  • Open-Drain Active-Low Interrupt Output
  • Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
  • 5-V Tolerant I/O Ports
  • 400-kHz Fast I2C Bus
  • Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus
  • Input and Output Configuration Register
  • Polarity Inversion Register
  • Internal Power-On Reset
  • Low Standby Current Consumption
  • Power-Up With All Channels Configured as Inputs
  • No Glitch on Power Up
  • Noise Filter on SCL/SDA Inputs
  • Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 1000-V Charged-Device Model (C101)

The TCA9554 is a 16-pin device that provides 8 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9554 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.

The features of the TCA9554 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0, A1, and A2 hardware selectable address pins allow up to eight TCA9554 devices on the same I2C bus. The device can also be reset to its default sate by cycling the power supply and causing a power-on reset.

The TCA9554 is a 16-pin device that provides 8 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9554 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.

The features of the TCA9554 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0, A1, and A2 hardware selectable address pins allow up to eight TCA9554 devices on the same I2C bus. The device can also be reset to its default sate by cycling the power supply and causing a power-on reset.
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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TCA9554 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers datasheet (Rev. E) PDF | HTML 2015/9/16
應用說明 Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 2024/7/3
應用說明 I2C Dynamic Addressing 2019/4/25
應用說明 Choosing the Correct I2C Device for New Designs PDF | HTML 2016/9/7
選擇指南 I2C Infographic Flyer 2015/12/3
應用說明 Understanding the I2C Bus PDF | HTML 2015/6/30
應用說明 Maximum Clock Frequency of I2C Bus Using Repeaters 2015/5/15
應用說明 I2C Bus Pull-Up Resistor Calculation PDF | HTML 2015/2/13

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

IO-EXPANDER-EVM — IO-EXPANDER-EVM：I2C 和 SMBus IO 擴展器評估模組

IO 擴展器評估模組 (EVM) 可讓您評估 TI 的 SMBus 與 I2C IO 擴展器線路裝置產品組合。TCA6424A 和 TCA9539 都安裝在電路板上。24 針腳 TSSOP 元件封裝還支援 TCA6408A、TCA6416A、TCA9534、TCA9534A、TCA9535、TCA9538, TCA9554、TCA9554A 和 TCA9555。

使用指南: PDF
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驅動程式或資料庫

PCF857XSW-LINUX — 適用於 PCF857X 的 Linux 驅動程式

The Linux driver supports the TCA9554 Remote 8-Bit I2C and SMBus I/O Expander. The Linux driver supports communication through the I2C bus and interfaces with the GPIO sub-systems.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • tca9554

 

Linux (...)

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韌體

SLVC564 — I/O Expander Software and Firmware Package

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模擬型號

TCA9554 IBIS MODEL

SCPM038.ZIP (153 KB) - IBIS 模型
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設計工具

I2C-DESIGNER — I2C 設計工具

使用 I2C 設計工具快速解決 I2C 設計中在定址、電壓位準和頻率方面的衝突。輸入主裝置和從屬裝置的參數，自動產生 I2C 樹狀結構，或輕鬆建置自訂解決方案。此工具將協助設計人員節省時間並符合 I2C 標準，提供關於偵錯缺失確認、選擇上拉電阻以及滿足 I2C 匯流排最大電容負載的指導。 
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SSOP (DB) 16 Ultra Librarian
SOIC (DW) 16 Ultra Librarian
SSOP (DBQ) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian
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