资 源 简 介
The SN74CBTD3306C is a high-speed TTL-compaTIble FET bus switch with low ON-state resistance (ron), allowing for minimal propagaTIon delay. This device features an integrated diode in series with VCC to provide level shifTIng for 5-V input down to 3.3-V output levels. AcTIve Undershoot-Protection Circuitry on the A and B ports of the SN74CBTD3306C provides protection for undershoot up to –2 V by sensing an undershoot event and ensuring that the switch remains in the proper OFF state.
The SN74CBTD3306C is organized as two 1-bit bus switches with separate output-enable (1OE, 2OE) inputs. It can be used as two 1-bit bus switches or as one 2-bit bus switch. When OE is low, the associated 1-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports.
