Mfr Part #:

TCA9803DGKR

The Texas Instruments TCA9803DGKR is a 2-bit bidirectional level-translating buffer/repeater for I2C and SMBus systems. It supports frequencies up to 400kHz.

✓ Total Stock: 3,051 pcs

$ Price Range: $0.32

TCA9803DGKR Available from 3 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Xingangxin ✓ Non-Authorised Inventory information	1,628 pcs On Request	1628 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Partservice ✓ Non-Authorised Inventory information	1,013 pcs On Request	1013 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
PROSOFT ELECTRONICS ✓ Non-Authorised Inventory information	410 pcs On Request	410 pcs	On Request	1	On Request	On Request	17+	On Request	On Request

TCA9803DGKR Description

Short technical summary and product information.

The TCA9803DGKR from Texas Instruments is a dual-channel, bidirectional buffer designed for I2C and SMBus applications. It facilitates level shifting between low-voltage (0.8V to 3.6V) and higher-voltage (1.65V to 3.6V) systems.

This buffer/repeater operates at a maximum frequency of 400kHz and features an internal current source on the B-side, eliminating the need for external resistors. It supports active-high repeater enable input and offers powered-off high impedance on I2C bus pins for reduced power consumption.

The device is suitable for systems requiring voltage translation and signal buffering in I2C and SMBus communication. It is available in an 8-VSSOP package and operates within an industrial temperature range of -40°C to 125°C.

Key features include support for clock stretching and multiple master arbitration, making it a versatile component for complex bus systems. The TCA9803DGKR is RoHS3 compliant.

TCA9803DGKR Quick Information

Product Type: Level Shifter

Canonical Name: TCA9803DGKR 2-bit Level-Translating I2C/SMBus Buffer/Repeater

Subcategory: Buffer/Repeater

TCA9803DGKR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

TCA9803DGKR Estimated Pricing

Qty	Low	High
1+	$0.32	$0.32

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

TCA9803DGKR Features

2-bit bidirectional I2C/SMBus buffer/repeater.
Supports voltage translation down to 0.8V.
Maximum frequency of 400 kHz.
Internal current source on B-side.
Operates from -40°C to 125°C.

TCA9803DGKR Applications

I2C bus voltage-level translation.
SMBus and PMBus interface bridging.
Mixed-voltage digital system interconnects.
Industrial sensor and actuator interfaces.
Automotive control module communication.

TCA9803DGKR FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating voltage range for VCCA?

VCCA operates from 0.8 V to 3.6 V.

What is the operating voltage range for VCCB?

VCCB operates from 1.65 V to 3.6 V.

What is the operating temperature range?

The operating temperature range is -40°C to 125°C.

What package is the TCA9803DGKR available in?

It is available in an 8-VSSOP package, also described as 8-TSSOP or 8-MSOP (0.118", 3.00mm Width).

What protocols does the TCA9803DGKR support?

It supports I2C and SMBus protocols.

How many channels does the TCA9803DGKR have?

It has 2 bidirectional channels.

What is the maximum frequency of the TCA9803DGKR?

The maximum frequency is 400 kHz.

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