 DESCRIPTION
The U74CB3Q3305 device is a high-bandwidth FET bus switch
using a charge pump to elevate the gate voltage of the pass
transistor, providing a low and flat ON-state resistance (RON). The
low and flat ON-state resistance allows for minimal propagation
delay and supports switching input voltage beyond the supply on the
data input/output (I/O) ports. The device also features low data I/O
capacitance to minimize capacitive loading and signal distortion on
the data bus. Specifically designed to support high-bandwidth
applications, the U74CB3Q3305 device provides an optimized
interface solution ideally suited for broadband communications,
networking, and data-intensive computing systems.
This device is fully specified for partial-power-down applications
using IOFF. The IOFF circuitry prevents damaging current backflow
through the device when it is powered down. The device has
isolation during power off
To ensure the high-impedance state during power up or power
down, OE should be tied to GND through a pull down resistor; the
minimum value of the resistor is determined by the current-sourcing
capability of the driver.

 FEATURES
* Operation Voltage Range: 2.3 ~ 3.6V
* Low power consumption, 0.25mA Typ. ICC
* High-bandwidth data path (up to 500 MHz)
* 5V tolerant I/Os with device powered up or powered down
* Low and flat ON-state resistance (ron) characteristics over operating range (Ron = 3.5Ω typical)
* Supports input voltage beyond supply on data I/O ports
0 to 5V switching with 3.3V VCC
0 to 3.3V switching with 2.5V VCC
* Data I/Os support 0 to 5 V signaling levels (0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V)
* Control inputs can be driven by TTL or 5V/3.3V CMOS outputs
* IOFF supports partial-power-down mode operation