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Product Overview
The TCA9617B from Texas Instruments is a dual bidirectional I2C buffer and voltage level translator with hot-swap capability. It provides two channels of buffered I2C bus, allowing for increased fan-out and isolation of bus capacitance. Operating from 0.9V to 5.5V on the A side and 2.5V to 5.5V on the B side, it enables seamless communication between different voltage domains. The device is housed in a compact 8-VSSOP package, making it ideal for space-constrained applications.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (Side A) |
0.9V to 5.5V |
| Supply Voltage (Side B) |
2.5V to 5.5V |
| Number of Channels |
2 |
| Maximum Data Rate |
400 kHz (Standard/Fast Mode) |
| Operating Temperature |
-40°C to +85°C |
| Package |
8-VSSOP |
| Hot-Swap Support |
Yes |
| ESD Protection |
±8 kV (HBM) |
Key Features
- Dual bidirectional I2C buffer with voltage level translation
- Hot-swap capability allows insertion/removal without bus disruption
- Supports Standard (100 kHz) and Fast (400 kHz) I2C modes
- Low standby current (typical 1 µA)
- Active HIGH enable pin for power management
- Open-drain I2C I/O with 5.5V tolerance
- Small 8-VSSOP package saves board space
Target Applications
- 5G base stations (e.g., remote radio units, baseband units)
- Automotive dashboard and infotainment systems
- Industrial automation (PLC, sensor hubs)
- Server and networking equipment (hot-swappable line cards)
- Consumer electronics (smart speakers, set-top boxes)
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
TCA9617BDGKR. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
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orders confirmed before 4 PM are shipped the same day.
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Quality Assurance & Compliance
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with full quality assurance and traceability.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
TCA9617B 是德州儀器推出的雙向 I2C 緩衝器和電壓位準轉換器,具備熱插拔功能。它提供兩個通道的緩衝 I2C 匯流排,可增加扇出並隔離匯流排電容。A 側工作電壓為 0.9V 至 5.5V,B 側為 2.5V 至 5.5V,實現不同電壓域之間的無縫通訊。器件採用緊湊的 8-VSSOP 封裝,適合空間受限的應用。
詳細技術參數
| 參數 |
數值 |
| 電源電壓(A 側) |
0.9V 至 5.5V |
| 電源電壓(B 側) |
2.5V 至 5.5V |
| 通道數 |
2 |
| 最大數據速率 |
400 kHz(標準/快速模式) |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
8-VSSOP |
| 熱插拔支援 |
是 |
| ESD 保護 |
±8 kV(HBM) |
核心特性
- 雙向 I2C 緩衝器,具備電壓位準轉換功能
- 熱插拔能力,可在不中斷匯流排的情況下插入/移除
- 支援標準(100 kHz)和快速(400 kHz)I2C 模式
- 低待機電流(典型值 1 µA)
- 高電平有效使能引腳,用於電源管理
- 開漏 I2C I/O,耐壓 5.5V
- 小型 8-VSSOP 封裝,節省電路板空間
典型應用場景
- 5G 基站(例如遠端射頻單元、基頻單元)
- 汽車儀表板和資訊娛樂系統
- 工業自動化(PLC、感測器集線器)
- 伺服器和網路設備(熱插拔線卡)
- 消費電子(智慧音箱、機上盒)
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