TCA9509DGKR The Texas Instruments TCA9509DGKR is a 2-bit level-translating buffer/repeater for I2C and SMBus systems. It supports 400kHz operation and operates from 2.7V to 5.5V.
Mfr Part #:

TCA9509DGKR

Available from 5 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TCA9509DGKR is a 2-bit level-translating buffer/repeater for I2C and SMBus systems. It supports 400kHz operation and operates from 2.7V to 5.5V.
Total Stock: 83,657 pcs
$ Price Range: $0.48

TCA9509DGKR Available from 5 distributors

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TCA9509DGKR Specifications Quick View

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TCA9509DGKR Description

Short technical summary and product information.

The TCA9509DGKR from Texas Instruments is an integrated circuit designed as a 2-bit level-translating buffer and repeater for I2C and SMBus systems. This device enables the extension of I2C and similar bus systems without performance degradation, facilitating bidirectional voltage-level translation between low voltages down to 0.9V and higher voltages from 2.7V to 5.5V in mixed-mode applications.

 

Key features include compatibility with I2C and SMBus protocols, support for 400kHz fast mode operation, and an active-high repeater-enable input. It requires no external pullup resistors on the lower-voltage port-A and supports mixed-mode signal operation with 5.5V tolerant I2C and enable inputs. The device offers lockup-free operation and supports arbitration and clock stretching across the repeater.

 

Packaged in an 8-VSSOP, the TCA9509DGKR is suitable for surface mount applications. It operates within a temperature range of -40°C to 85°C and comes in a standard package quantity of 2,500 units on tape and reel.

TCA9509DGKR Quick Information

Product Type: I2C Buffer/Repeater
Canonical Name: TCA9509DGKR 2-bit level-translating 400-kHz I2C/SMBus buffer/repeater
Subcategory: I2C/SMBus

TCA9509DGKR Compliance

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

TCA9509DGKR Estimated Pricing

Qty Low High
1+ $0.48 $0.48

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

TCA9509DGKR Features

  • 2-bit level-translating I2C/SMBus buffer/repeater.
  • Supports 400kHz fast mode I2C bus speeds.
  • Voltage translation from 0.9V to 5.5V.
  • Surface mount 8-VSSOP package.
  • Operates from -40°C to 85°C.

TCA9509DGKR Applications

  • Extends I2C and SMBus bus systems.
  • Enables mixed-voltage interface designs.
  • Supports bidirectional voltage translation.
  • Ideal for signal integrity applications.

TCA9509DGKR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the TCA9509DGKR?

The operating voltage range is 2.7V to 5.5V on the B side and 0.9V to 5.5V on the A side.

What is the maximum data rate supported by the TCA9509DGKR?

The maximum data rate supported is 400kHz.

What package type is the TCA9509DGKR available in?

The TCA9509DGKR is available in an 8-VSSOP package.

What is the operating temperature range for this device?

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

Is the TCA9509DGKR RoHS compliant?

The RoHS Status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the TCA9509DGKR?

The MSL is Level 1.

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