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Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic
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SKU: TES-EV00082674
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Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic
Solve your I2C bus signal integrity problems with the Adafruit LTC4311 I2C Extender / Active Terminator. This compact breakout board uses the Linear Technology LTC4311 chip to boost I2C signals on long cable runs or heavily loaded buses, ensuring reliable communication across your entire sensor network. Featuring plug-and-play STEMMA QT / Qwiic connectors for solderless I2C connections. Available at The Engineer Store, Bengaluru - trusted by makers and professionals across India. Fast shipping, 7-day warranty on manufacturing defects, and expert technical support.
Specifications
| Manufacturer | Adafruit Industries |
| Part Number | 4756 |
| Core IC | LTC4311 I2C Active Terminator / Accelerator |
| Function | I2C Bus Extender / Active Terminator |
| Connector Type | STEMMA QT / Qwiic (JST SH 4-pin) |
| Operating Voltage | 2.3V to 5.5V |
| I2C Compatibility | Standard Mode (100 kHz), Fast Mode (400 kHz), Fast Mode Plus (1 MHz) |
| Active Current Draw | ~1.5 mA typical |
| Standby Current | Ultra-low (auto-detects bus activity) |
| Rise Time Acceleration | Active pull-up current sources for faster signal edges |
| Bus Capacitance Support | Extends bus capacitance tolerance significantly beyond standard 400 pF limit |
| Board Dimensions | Compact Adafruit breakout form factor |
| Mounting | Breadboard-friendly header holes + STEMMA QT connectors |
| Origin | Original / Authentic Adafruit Product |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
| Price | Rs.808.00 |
Key Features
- Active I2C Termination: Uses active current sources instead of passive pull-up resistors to sharpen SDA and SCL signal edges, dramatically improving signal quality on long or capacitively loaded I2C buses.
- Automatic Bus Detection: The LTC4311 automatically detects I2C bus activity and enables its accelerator circuitry only when needed, conserving power during idle periods.
- Wide Voltage Range (2.3V-5.5V): Works seamlessly with both 3.3V and 5V I2C systems - compatible with Arduino, Raspberry Pi, ESP32, STM32, and more.
- STEMMA QT / Qwiic Connectors: Two JST SH 4-pin connectors allow solderless daisy-chaining of I2C devices - just plug in and go.
- Breadboard-Friendly: Standard 0.1" header pin holes for easy integration into prototyping setups.
- Supports High-Speed I2C: Compatible with Standard Mode (100 kHz), Fast Mode (400 kHz), and Fast Mode Plus (1 MHz) I2C communication.
- Transparent Operation: No I2C address consumed - the LTC4311 operates at the electrical level and does not occupy any address on the bus.
- Compact Design: Small form factor that can be placed inline on any I2C bus without adding bulk to your project.
Why Choose This?
- 100% Authentic Adafruit Product: Sourced directly from authorized distributors - guaranteed genuine with full Adafruit quality and documentation.
- Solve Real I2C Problems: Eliminates data corruption, communication failures, and signal degradation caused by long wires, multiple devices, or high bus capacitance.
- No Address Conflict: Unlike I2C multiplexers, this device is completely transparent - no firmware changes or address management required.
- Plug-and-Play with STEMMA QT / Qwiic Ecosystem: Instantly compatible with hundreds of sensors and breakout boards from Adafruit, SparkFun, and other Qwiic-compatible manufacturers.
- 1-5 days shipping: Ships from our Bengaluru warehouse to most locations across India.
- Expert Technical Support: Our engineering team is available to help you integrate this into your project.
Project Ideas
- Long-Distance I2C Sensor Networks: Place the LTC4311 on I2C buses running over 50 cm+ cables to environmental sensors, OLED displays, or IMUs deployed across a room, greenhouse, or industrial enclosure.
- Multi-Sensor Data Logging: Daisy-chain 5-10+ I2C sensors (temperature, humidity, pressure, light, gas
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic Online in India
Purchase the Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
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Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic
Solve your I2C bus signal integrity problems with the Adafruit LTC4311 I2C Extender / Active Terminator. This compact breakout board uses the Linear Technology LTC4311 chip to boost I2C signals on long cable runs or heavily loaded buses, ensuring reliable communication across your entire sensor network. Featuring plug-and-play STEMMA QT / Qwiic connectors for solderless I2C connections. Available at The Engineer Store, Bengaluru - trusted by makers and professionals across India. Fast shipping, 7-day warranty on manufacturing defects, and expert technical support.
Specifications
| Manufacturer | Adafruit Industries |
| Part Number | 4756 |
| Core IC | LTC4311 I2C Active Terminator / Accelerator |
| Function | I2C Bus Extender / Active Terminator |
| Connector Type | STEMMA QT / Qwiic (JST SH 4-pin) |
| Operating Voltage | 2.3V to 5.5V |
| I2C Compatibility | Standard Mode (100 kHz), Fast Mode (400 kHz), Fast Mode Plus (1 MHz) |
| Active Current Draw | ~1.5 mA typical |
| Standby Current | Ultra-low (auto-detects bus activity) |
| Rise Time Acceleration | Active pull-up current sources for faster signal edges |
| Bus Capacitance Support | Extends bus capacitance tolerance significantly beyond standard 400 pF limit |
| Board Dimensions | Compact Adafruit breakout form factor |
| Mounting | Breadboard-friendly header holes + STEMMA QT connectors |
| Origin | Original / Authentic Adafruit Product |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
| Price | Rs.808.00 |
Key Features
- Active I2C Termination: Uses active current sources instead of passive pull-up resistors to sharpen SDA and SCL signal edges, dramatically improving signal quality on long or capacitively loaded I2C buses.
- Automatic Bus Detection: The LTC4311 automatically detects I2C bus activity and enables its accelerator circuitry only when needed, conserving power during idle periods.
- Wide Voltage Range (2.3V-5.5V): Works seamlessly with both 3.3V and 5V I2C systems - compatible with Arduino, Raspberry Pi, ESP32, STM32, and more.
- STEMMA QT / Qwiic Connectors: Two JST SH 4-pin connectors allow solderless daisy-chaining of I2C devices - just plug in and go.
- Breadboard-Friendly: Standard 0.1" header pin holes for easy integration into prototyping setups.
- Supports High-Speed I2C: Compatible with Standard Mode (100 kHz), Fast Mode (400 kHz), and Fast Mode Plus (1 MHz) I2C communication.
- Transparent Operation: No I2C address consumed - the LTC4311 operates at the electrical level and does not occupy any address on the bus.
- Compact Design: Small form factor that can be placed inline on any I2C bus without adding bulk to your project.
Why Choose This?
- 100% Authentic Adafruit Product: Sourced directly from authorized distributors - guaranteed genuine with full Adafruit quality and documentation.
- Solve Real I2C Problems: Eliminates data corruption, communication failures, and signal degradation caused by long wires, multiple devices, or high bus capacitance.
- No Address Conflict: Unlike I2C multiplexers, this device is completely transparent - no firmware changes or address management required.
- Plug-and-Play with STEMMA QT / Qwiic Ecosystem: Instantly compatible with hundreds of sensors and breakout boards from Adafruit, SparkFun, and other Qwiic-compatible manufacturers.
- 1-5 days shipping: Ships from our Bengaluru warehouse to most locations across India.
- Expert Technical Support: Our engineering team is available to help you integrate this into your project.
Project Ideas
- Long-Distance I2C Sensor Networks: Place the LTC4311 on I2C buses running over 50 cm+ cables to environmental sensors, OLED displays, or IMUs deployed across a room, greenhouse, or industrial enclosure.
- Multi-Sensor Data Logging: Daisy-chain 5-10+ I2C sensors (temperature, humidity, pressure, light, gas
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic Online in India
Purchase the Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.