TCA9539
- I2C to Parallel Port Expander
- Low Standby-Current Consumption
- Open-Drain Active-Low Interrupt Output
- Active-Low Reset Input
- 5-V Tolerant I/O Ports
- Compatible With Most Microcontrollers
- 400-kHz Fast I2C Bus
- Input and Output Configuration Register
- Polarity Inversion Register
- Internal Power-on Reset
- No Glitch on Power Up
- Noise Filter on SCL and SDA Inputs
- Address by Two Hardware Address Pins for Use
of up to Four Devices - Latched Outputs With High-Current Drive
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 TCA9539 is a 24-pin device that provides 16 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 (VCC) range from 1.65 V to 5.5 V. The device supports 100-kHz (I2C Standard mode) and 400-kHz (I2C Fast mode) clock frequencies. I/O expanders such as the TCA9539 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 TCA9539 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0 and A1 hardware selectable address pins allow up to four TCA9539 devices on the same I2C bus. The device can be reset to its default state by cycling the power supply and causing a power-on-reset. Also, the TCA9539 has a hardware RESET pin that can be used to reset the device to its default state.
技術文件
| 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 | TCA9539 Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and Configuration Registers datasheet (Rev. C) | PDF | HTML | 2016/4/26 | ||
| 應用說明 | I2C: What is the Auto Increment Feature? | PDF | HTML | 2024/7/5 | |||
| 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 | ||||
| 技術文章 | How to create a dynamic power solution for stepper motors, relays and LEDs | PDF | HTML | 2016/11/1 | |||
| 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)。
SLVC564 — I/O Expander Software and Firmware Package
I2C-DESIGNER — I2C 設計工具
TIDA-00403 — 使用 TLV320AIC3268 miniDSP 轉碼器的超音波距離量測參考設計
TIDA-00403 參考設計使用針對超音波距離量測解決方案的現成 EVM，該解決方案使用 TLV320AIC3268 miniDSP 中的演算法。與 TI 的 PurePath Studio 設計套件搭配使用，只需按滑鼠即可設計穩固且使用者可配置的超音波距離量測系統。使用者可修改超音波突衝產生特性和偵測演算法，以配合工業和測量應用的特定使用案例，讓使用者能夠克服其他固定功能感測器的限制，同時提高量測可靠性。TLV320AIC3268 上的兩個 GPIO 會自動觸發，表示發射與接收的超音波突衝。透過監控這些 GPIO 的主機 MCU，即可擷取飛行時間。
TIDEP-01008 — Jacinto™ ADAS 處理器上的多感測器平臺參考設計
D3 Engineering 為先進駕駛輔助系統 (ADAS) 推出的多感測器平台參考設計，可為合格的開發人員提供一個具備完整功能的 ADAS 應用測試與開發評估平台，主要用於汽車產業。 D3 也提供系統模組 (SOM) 解決方案，其中包含可搭配此參考設計使用的 ADAS 嵌入式處理器（例如 TDA3x）。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
| WQFN (RTW) | 24 | Ultra Librarian |
| TSSOP (PW) | 24 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。