首頁 介面 I2C & I3C ICs I2C & I3C level shifters, buffers & hubs
首頁
介面
I2C & I3C ICs
I2C & I3C level shifters, buffers & hubs

TCA9802

現行

具有內部 2-mA 電流來源的 2 位元電平轉換 400-kHz I2C/SMBus 緩衝器/中繼器

立即訂購
產品規格表

TCA9802

現行
產品規格表 立即訂購

產品詳細資料

Features Buffer, Enable pin Protocols I2C Frequency (max) (MHz) 0.4 VCCA (min) (V) 0.8 VCCA (max) (V) 3.6 VCCB (min) (V) 1.65 VCCB (max) (V) 3.6 Supply restrictions No rule Rating Catalog Operating temperature range (°C) -40 to 125
Features Buffer, Enable pin Protocols I2C Frequency (max) (MHz) 0.4 VCCA (min) (V) 0.8 VCCA (max) (V) 3.6 VCCB (min) (V) 1.65 VCCB (max) (V) 3.6 Supply restrictions No rule Rating Catalog Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Two-channel bidirectional buffer
  • Integrated current source on B-side, requires no external B-side resistors
  • Ultra-low power consumption
  • No static-voltage offset, low VOL
  • I2C bus and SMBus compatible
  • Operating supply voltage range of 0.8 V to 3.6 V on A-side
  • Operating supply voltage range of 1.65 V to 3.6 V on B-side
  • Active-high repeater enable input
  • Powered-off high impedance I2C bus pins on A-side
  • Powered-off back-power protection I2C bus pins
  • Support for clock stretching and multiple master arbitration
  • Family of current source options from 0.5 mA to 3 mA
  • Two-channel bidirectional buffer
  • Integrated current source on B-side, requires no external B-side resistors
  • Ultra-low power consumption
  • No static-voltage offset, low VOL
  • I2C bus and SMBus compatible
  • Operating supply voltage range of 0.8 V to 3.6 V on A-side
  • Operating supply voltage range of 1.65 V to 3.6 V on B-side
  • Active-high repeater enable input
  • Powered-off high impedance I2C bus pins on A-side
  • Powered-off back-power protection I2C bus pins
  • Support for clock stretching and multiple master arbitration
  • Family of current source options from 0.5 mA to 3 mA

The TCA9802 is a dual-channel bidirectional buffer intended for I2C bus and SMBus/PMBus systems. It provides bidirectional level shifting (up-translation and down-translation) between low voltages (down to 0.8 V) and higher voltages (1.65 V to 3.6 V). The TCA9802 features an internal current source on the B-side of the device, allowing the removal of external pull-up resistors on the B-side. The current source also provides an improved rise time and ultra-low power consumption.

The TCA9802 is able to provide true buffering (rather than a pass-FET solution) without using a static voltage offset or incremental offset. This means that the VOL on both the A and B sides of the TCA9802 are very low (approximately 0.2 V), helping to eliminate communication issues as a result of fixed VIL thresholds. Another key feature of the TCA9802 is that there are no power sequencing requirements, or power supply dependencies. VCCA can be greater than, less than, or equal to VCCB. This gives the system designer flexibility with how the TCA9802 is used.

The TCA9802 is part of a four device family with varying current source strengths (see the Device Comparison Table).

The TCA9802 is a dual-channel bidirectional buffer intended for I2C bus and SMBus/PMBus systems. It provides bidirectional level shifting (up-translation and down-translation) between low voltages (down to 0.8 V) and higher voltages (1.65 V to 3.6 V). The TCA9802 features an internal current source on the B-side of the device, allowing the removal of external pull-up resistors on the B-side. The current source also provides an improved rise time and ultra-low power consumption.

The TCA9802 is able to provide true buffering (rather than a pass-FET solution) without using a static voltage offset or incremental offset. This means that the VOL on both the A and B sides of the TCA9802 are very low (approximately 0.2 V), helping to eliminate communication issues as a result of fixed VIL thresholds. Another key feature of the TCA9802 is that there are no power sequencing requirements, or power supply dependencies. VCCA can be greater than, less than, or equal to VCCB. This gives the system designer flexibility with how the TCA9802 is used.

The TCA9802 is part of a four device family with varying current source strengths (see the Device Comparison Table).
open-in-new 尋找其它 I2C & I3C level shifters, buffers & hubs
下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
引腳對引腳的功能與所比較的產品相同
TCA9803 現行 具有內部 3-mA 電流來源的 2 位元電平轉換 400-kHz I2C/SMBus 緩衝器/中繼器 3-mA current source

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 11
類型 標題 日期
* Data sheet TCA9802 Level-Translating I2C Bus Buffer/Repeater datasheet (Rev. B) PDF | HTML 2020年 2月 13日
Application brief Best Practices: I2C Devices on an I3C Shared Bus PDF | HTML 2023年 3月 30日
Application note Why, When, and How to use I2C Buffers 2018年 5月 23日
Technical article Quick fixes to common I2C headaches PDF | HTML 2017年 4月 24日
Application note Advantages and Design Considerations of the TCA980x Family 2017年 3月 30日
User guide TCA9802 I2C Buffer Evaluation Module 2017年 3月 21日
Application note Choosing the Correct I2C Device for New Designs PDF | HTML 2016年 9月 7日
Selection guide I2C Infographic Flyer 2015年 12月 3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

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

TCA9802EVM — TCA980x 系列 I²C 和 SMBus 位準移位器評估模組

The TCA9802EVM evaluation module (EVM) allows the user to connect power to and buffer and translate I2C commands to the onboard slave device, TMP102. The EVM allows the designer to load and test different capacitive loading and as the option to replace a series resistor with an inductor to emulate (...)
使用指南: PDF
TI.com 無法提供
模擬型號

TCA9802 IBIS Model

SCPM042.ZIP (80 KB) - IBIS Model
下載
設計工具

I2C-DESIGNER — I2C 設計工具

Use the I2C Designer tool to quickly resolve conflicts in addressing, voltage level and frequency in I2C based designs. Enter master and slave inputs to automatically generate an I2C tree or easily build a custom solution. This tool will help designers save time and comply with the I2C standard (...)
在雲端評估
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 (...)
要求
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 (...)
使用指南: PDF
檢視選項
封裝 引腳 下載
VSSOP (DGK) 8 檢視選項
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 資格摘要
  • 進行中可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

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。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片