TCA9803DGKT

Translators, Level Shifters Overview

The TCA9803DGKT is a bidirectional voltage-level translating integrated circuit manufactured by Texas Instruments. It features two channels within a single circuit, designed for I2C and SMBus interfaces. The device supports a VCCA range of 0.8 V to 3.6 V and a VCCB range of 1.65 V to 3.6 V. It operates with a maximum clock frequency of 400 kHz and exhibits propagation delays of 15 ns and 120 ns. The component functions with open-drain inputs and outputs, drawing a typical operating supply current of 45 uA. It is housed in an 8-VSSOP package and is rated for operation between -40°C and +85°C.

Translators, Level Shifters Feature Summary

• Provides bidirectional voltage translation between low-voltage (0.8V) and standard-voltage (1.65V) domains
• Supports I2C and SMBus communication protocols with open-drain input/output configurations
• Integrates two channels within a single circuit structure

Translators, Level Shifters Applications

• Interfacing low-voltage microcontrollers with higher-voltage peripheral devices
• I2C bus buffering and signal re-driving in mixed-voltage systems
• SMBus level translation for system management applications

Translators, Level Shifters Procurement Notes

Verify the specific suffix 'DGKT' corresponds to the 8-VSSOP package and tape-and-reel packaging configuration. Confirm that the voltage ranges align with the target application's power rails. Ensure compliance with RoHS3 specifications if required by the end product. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and current production status.

Translators, Level Shifters Selection Notes

Select this component when bidirectional translation is required between a 0.8V domain and a 1.65V or higher domain. It is suitable for applications requiring I2C or SMBus compatibility at speeds up to 400 kHz. Consider the 8-VSSOP package size for space-constrained designs. Verify that the open-drain output type matches the pull-up requirements of the bus lines.

Translators, Level Shifters Part Context

This component belongs to the TCA9803 series of voltage-level translators from Texas Instruments. It is part of the broader interface IC category, specifically serving as a signal buffer and repeater. The device complements other level-shifting solutions by offering dual-channel capability in a compact surface-mount package.

Translators, Level Shifters Replacement Considerations

TCA9800DGKR is listed as a parameter-equivalent substitute. 74AVCH2T45GN,115 is identified as a similar alternative from Nexperia USA Inc.