General description

The 74CB3Q3253 is a dual high-bandwidth single-pole, quad-throw FET bus switch.

Each switch features a select input (Sn) and an output enable input (nOE). The switch

is disabled when the nOE input is HIGH. An internal charge-pump increases the

gate voltage of the NMOS pass transistor. The result is improved RON and RON(flat)

performance and the ability to switch 5 V signals when VCC = 3.3 V.

Features and benefits

• Wide supply voltage range from 2.3 V to 3.6 V

• Overvoltage switching on switch ports:

– 0 V to 5 V switching with VCC = 2.5 V

– 0 V to 5 V switching with VCC = 3.3 V

• Switch voltage accepts signals up to 5.5 V

• 4 Ω (typical) ON resistance

• 3.5 pF (typical) OFF-state capacitance

• High bandwidth 0.5 GHz (maximum)

• Low input/output capacitance minimizes loading and signal distortion

• Fast switching frequency fmax = 20 MHz (maximum)

• Low power consumption ICC = 0.4 mA (typical)

• Control inputs can be driven by TTL or 5 V/3.3 V CMOS outputs

• IOFF supports partial power-down mode operation

• Latch-up performance exceeds 100 mA per JESD 78E Class II Level A

• ESD protection:

– HBM ANSI/ESDA/JEDEC JS-001-2012 Class 2 exceeds 2 kV

– CDM JESD22-C101F exceeds 1000 V

• Specified from -40 °C to +85 °C

Applications

• Communication infrastructure

• Bus isolation

• Memory interleaving

• Sensor multiplexing