1. General description

The 74CB3Q3257-Q100 is a quad high-bandwidth single-pole, double-throw FET bus switch. The

device features one select input (S) and one output enable input (OE). The switch is disabled when

the OE 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.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100

(Grade 3) and is suitable for use in automotive applications.

2. Features and benefits

? Automotive product qualification in accordance with AEC-Q100 (Grade 3)

? Specified from -40 °C to +85 °C

? 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

? 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:

? MIL-STD-883, method 3015 exceeds 2000 V

? HBM ANSI/ESDA/Jedec JS-001 Class 2 exceeds 2 kV

3. Applications

? Communication infrastructure

? Bus isolation

? Memory interleaving

? Sensor multiplexing