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TCA4311DGKR The Texas Instruments TCA4311DGKR is a 2-bit bidirectional hot-swappable I2C/SMBus buffer. It operates from a 2.7V to 5.5V supply and supports frequencies up to 400kHz.
Mfr Part #:

TCA4311DGKR

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TCA4311DGKR is a 2-bit bidirectional hot-swappable I2C/SMBus buffer. It operates from a 2.7V to 5.5V supply and supports frequencies up to 400kHz.
✓ Total Stock: 23,503 pcs
$ Price Range: $3.75

TCA4311DGKR Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
20,377 pcs
On Request
20377 pcs On Request 1 On Request On Request 1036+ROHS On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
2,306 pcs
On Request
2306 pcs On Request 1 On Request On Request 1006+5 On Request On Request
Bristol Electronics ✓
Non-Authorised Inventory information
775 pcs
On Request
775 pcs On Request 1 On Request On Request On Request On Request On Request
MW.FEP S.p.A. ✓
Non-Authorised Inventory information
45 pcs
On Request
45 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

TCA4311DGKR Specifications Quick View

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TCA4311DGKR Description

Short technical summary and product information.

The TCA4311DGKR from Texas Instruments is a 2-bit bidirectional buffer designed for hot-swappable I2C and SMBus applications. This device operates within a wide power-supply voltage range of 2.7V to 5.5V, making it versatile for various system designs.

 

Key electrical specifications include a maximum operating frequency of 400kHz and a typical supply current of 5.1mA. The buffer features 2-wire bus input and output, with a typical capacitance of 10 pF. It provides essential hot-swap functionality with 1-V precharge on SDA and SCL lines, preventing data corruption during live board insertion or removal.

 

Packaged in an 8-VSSOP or 8-TSSOP/MSOP, the TCA4311DGKR is suitable for surface-mount applications. Its design supports bidirectional data transfer, increases fanout by buffering SDA and SCL lines, and isolates input from output lines. The device also supports standard mode and fast mode I2C devices, clock stretching, arbitration, and synchronization.

 

This component is noted as 'Not Recommended for New Designs' (NRND), indicating that while functional, newer alternatives may be preferred for new projects. It offers robust ESD protection, exceeding JESD 22 standards, and latch-up performance that surpasses JESD 78 requirements.

TCA4311DGKR Quick Information

Product Type: I2C Buffer
Canonical Name: TCA4311 Hot Swappable 2-Wire Bus Buffer
Subcategory: I2C/SMBus Buffer

TCA4311DGKR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TCA4311DGKR Estimated Pricing

Qty Low High
1+ $3.75 $3.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

TCA4311DGKR Features

  • 2-bit bidirectional hot-swappable I2C/SMBus buffer.
  • Operates from 2.7V to 5.5V supply.
  • Supports up to 400kHz operation.
  • Increases fanout for I2C signals.
  • Prevents corruption during live insertion.

TCA4311DGKR Applications

  • Ideal for hot board insertion.
  • Suitable for bus extension applications.
  • Used in systems requiring I2C buffering.
  • Facilitates live system maintenance.

TCA4311DGKR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the TCA4311DGKR?

The TCA4311DGKR operates from a 2.7V to 5.5V supply.

What is the maximum operating frequency of the TCA4311DGKR?

The maximum operating frequency for the TCA4311DGKR is 400kHz.

What is the operating temperature range for this I2C buffer?

The operating temperature range is -40°C to 85°C.

What package type is the TCA4311DGKR available in?

The TCA4311DGKR is available in an 8-VSSOP package.

What are the main applications for the TCA4311DGKR?

The TCA4311DGKR is designed for I²C hot-swap applications and bus extension.

Does the TCA4311DGKR offer ESD protection?

Yes, the TCA4311DGKR provides ESD protection exceeding 8000V (HBM), 200V (MM), and 1000V (CDM).

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