產品規格表
PCA9515B
- Two-Channel Bidirectional Buffers
- I2C Bus and SMBus Compatible
- Support for I2C Standard Mode (100-kHz) and
Fast Mode (400-kHz) - Active-High Repeater-Enable Input
- Open-Drain I2C Input and Output
- 5.5-V Tolerant I2C Input and Output and
Enable Input Support Mixed-Mode Signal Operation - Lockup-Free Operation
- Accommodates Standard Mode, Fast Mode I2C
Devices, and Multiple Masters - Supports Arbitration and Clock Stretching Across
Repeater - Powered-Off High-Impedance I2C Pins
- Latch-Up Performance Exceeds 100-mA Per
JESD 78, Class I - ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)
The PCA9515B is a BiCMOS dual bidirectional buffer integrated circuit intended for I2C bus and SMBus applications. The device contains two identical bidirectional open-drain buffer circuits that enables I2C and similar bus systems to be extended (or add slaves) without degrading system performance. The dual bidirectional I2C buffer is operational at 2.3 V to 3.6 V VCC.
The PCA9515B buffers both the serial data (SDA) and serial clock (SCL) signals on the I2C bus, while retaining all the operating modes and features of the I2C system. The device allows two buses, of 400-pF bus capacitance, to be connected in an I2C application.
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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 | PCA9515B Dual Bidirectional I2C Bus and SMBus Repeater datasheet (Rev. B) | PDF | HTML | 2016/3/24 | ||
| 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 | Why, When, and How to use I2C Buffers | 2018/5/23 | ||||
| 應用說明 | Choosing the Correct I2C Device for New Designs | PDF | HTML | 2016/9/7 | |||
| 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
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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。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | 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。