TCA9800DGKR

Translators, Level Shifters Overview

The TCA9800DGKR is a two-channel level-translating I2C bus buffer and repeater manufactured by Texas Instruments. It operates with a maximum clock frequency of 400 kHz, supporting both I2C and SMBus protocols. The device features an A-side supply voltage range of 0.8 V to 3.6 V and a B-side range of 1.65 V to 3.6 V. Propagation delays are specified at 40 ns and 100 ns. It draws 18 uA of operating current and utilizes open-drain inputs and outputs. The component is housed in an 8-pin VSSOP package and functions within a temperature range of -40°C to +85°C.

Translators, Level Shifters Feature Summary

• Provides bidirectional level translation between low-voltage and standard-voltage logic domains for I2C and SMBus interfaces.
• Functions as a signal buffer and repeater to extend bus distance and increase drive capability.
• Supports dual independent channels for simultaneous multi-bus operation.

Translators, Level Shifters Applications

• Interfacing low-voltage microcontrollers with higher-voltage peripheral devices on I2C buses.
• Extending I2C bus length in embedded systems requiring signal integrity maintenance.
• Connecting multiple I2C branches in complex circuit architectures.

Translators, Level Shifters Procurement Notes

Verify the suffix 'DGKR' corresponds to the tape-and-reel packaging format rather than cut-tape or tube options. Confirm that the specific revision level matches the design requirements. Ensure the 800 mV minimum voltage on the A side aligns with the target system's power rails. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit components.

Translators, Level Shifters Selection Notes

Select this component when bidirectional level shifting is required between 0.8 V–3.6 V and 1.65 V–3.6 V domains. It is suitable for applications needing 400 kHz speed with low quiescent current. Consider the VSSOP-8 package constraints for PCB layout. Verify compatibility with SMBus specifications if high-speed mode is not utilized.

Translators, Level Shifters Part Context

This device belongs to the TCA9800 series of level-shifting buffers. It complements other Texas Instruments interface solutions like the TCA9802 and TCA9803. The DGKR variant specifically denotes the reel-packaged version of the standard TCA9800DGKT. It addresses common integration challenges in mixed-voltage digital systems.

Translators, Level Shifters Replacement Considerations

TCA9800DGKT serves as the direct equivalent with identical electrical characteristics but different packaging. TCA9802DGKR offers similar functionality with slightly different propagation delay specifications. Verify pinout compatibility before substituting with these alternatives.