PCA9548A: Voltage translation between 1.8V and 3.3V consult

Stanley Dai

Part Number: PCA9548A

Hi Team,

Customer is consulting that whether our PCA9548A can support voltage-level translation between 1.8V and 3.3V? If yes, why our D/S typical application part and recommended operating condition doesn't contain 1.8V range?

Pls help us here. Thanks.

Best,

Stanley.

over 2 years ago

+1 Clemens Ladisch over 2 years ago

Guru 243980 points

The supply voltage must be at least a nominal 2.5 V. But the lowest pull-up voltage can be slightly lower than the supply voltage; see figure 9.2 and and section 9.2.1. (The minimum voltages in figure 9-1 are wrong.)

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PCA9548A: Voltage translation between 1.8V and 3.3V consult