TCA9617B
- Two-channel bidirectional I2C buffer
- Support for standard mode, fast mode (400kHz), and fast mode+ (1MHz) I2C operation
- Operating supply voltage range of 0.8V to 5.5V on A-side
- Operating supply voltage range of 2.2V to 5.5V on B-side
- Voltage-level translation from 0.8V to 5.5V and 2.2V to 5.5V
- Footprint and function replacement for TCA9517
- Active-high repeater-enable input
- Open-drain I2C I/O
- 5.5V Tolerant I2C and enable input support
- Lockup-free operation
- Powered-off high-impedance I2C bus pins
- Support for clock stretching and multiple controller arbitration across the device
- Latch-up performance exceeds 100mA per JESD 78, class II
- ESD protection exceeds JESD 22
- 4000V Human-body model
- 1500V Charged-device model
The TCA9617B is a BiCMOS dual bidirectional buffer intended for I2C bus and SMBus systems. The device provides bidirectional voltage-level translation (up-translation and down-translation) between low voltages (down to 0.8V) and higher voltages(2.2V to 5.5V) in mixed-mode applications. This device enables I2C and similar bus systems to be extended, without degradation of performance even during level shifting.
The TCA9617B buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, allowing two buses of 550pF to be connected in an I2C application. This device can also be used to separate two halves of a bus for voltage and capacitance.
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 | TCA9617B Level-Translating FM+ I2 C Bus Repeater datasheet (Rev. F) | PDF | HTML | 2026/3/20 | ||
| 應用說明 | Preventing ICT-Induced Electrical Overstress on TCA9617B I/O Ports | PDF | HTML | 2026/6/5 | |||
| 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 | Why, When, and How to use I2C Buffers | 2018/5/23 | ||||
| 技術文章 | Intro to I2C: what the Internet doesn’t tell you | PDF | HTML | 2016/11/24 | |||
| 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 | ||||
| 技術文章 | How to simplify I2C tree when connecting multiple slaves to an I2C master | PDF | HTML | 2015/10/15 | |||
| 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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I2C-DESIGNER — I2C 設計工具
| 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
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