SN74CB3Q3306ADCUR

• Two Independent FET Bus Switch Channels
• Low 9 Ohm On-Resistance Signal Path
• 200ps Propagation Delay For Near-Transparent Signal Timing
• Single 2.3V To 3.6V Supply Operation
• 64mA High And Low Level Output Current
• 8-Pin VSSOP Package, Lead Free And RoHS Compliant

The SN74CB3Q3306ADCUR is a two-channel FET bus switch from Texas Instruments in an 8-pin VSSOP surface-mount package measuring 2.3mm by 2mm. The two independent circuits provide a low 9 Ohm on-resistance signal path with a 200ps propagation delay and a 6.5ns turn-on delay, so signals pass through with minimal added timing. It operates from a single 2.3V to 3.6V supply at 250µA nominal supply current and handles 64mA high and low level output current. Texas Instruments lists the SN74CB3Q3306ADCUR as in production, lead free, RoHS compliant, and supplied in tape and reel for -40°C to 85°C operation.

FET bus switches such as the SN74CB3Q3306ADCUR are used to connect, isolate, or route bus and clock signals under logic control, for example multiplexing two sources onto one destination, isolating a peripheral from a shared bus, hot-swap and card-slot isolation, and live insertion protection. Because the switch adds only a low series resistance and picosecond-scale delay, it preserves signal integrity on timing-critical nets better than a buffered multiplexer. Computing, networking, and embedded hardware engineers use these parts in memory, PCI-style, and general bus isolation designs.