TCA9800DGKT Information

TCA9800 Level-Translating I2C Bus Buffer/Repeater

Texas Instruments TCA9800 Level-Translating I2C Bus Buffer/Repeater is a dual-channel bidirectional buffer intended for I2C bus and SMBus/PMBus systems. This buffer/repeater provides bidirectional level shifting (up-translation and down-translation) between low voltages (down to 0.8V) and higher voltages (1.65V to 3.6V). The TCA9800 features an internal current source on the B-side of the device, allowing the removal of external pull-up resistors on the B-side. The current source also provides an improved rise time and ultra-low power consumption. The TCA9800 is able to provide true buffering (rather than a pass-FET solution) without using a static voltage offset or incremental offset. This means that the VOL on both the A and B sides of the TCA9800x are very low, helping to eliminate communication issues as aresult of fixed VIL thresholds. Another key feature of the device is that there are no power sequencing requirements or power supply dependencies. VCCA can be greater than, less than, or equal to VCCB. This gives the system designer flexibility with how the TCA9800 is used.

Specifications

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Alternate Names

Texas Instruments has several brands around the world that may have alternate names for TCA9800DGKT due to regional differences or acquisition. TCA9800DGKT may also be known as the following names: