The SN74LVCC3245A device is 8-bit (octal) noninverting bus transceiver contains two
separate supply rails. The B port is designed to track VCCB, which accepts
voltages from 3 V to 5.5 V, and the A port is designed to track VCCA, which
operates at 2.3 V to 3.6 V. This allows for translation from a 3.3-V to a 5-V system environment
and vice versa, from a 2.5-V to a 3.3-V system environment and vice versa.
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