 DESCRIPTION
The U74CB3Q3257 device is a high-bandwidth FET bus switch
utilizing a charge pump to elevate the gate voltage of the pass
transistor, providing a low and flat ON-state resistance (RON).

 EATURES
* High-Bandwidth Data Path(up to 500MHz)
* 5V Tolerant I/Os With Device Powered Up or Powered
Down
* Low and Flat ON-State Resistance (RON) Characteristics
Over Operating Range (RON =4Ω Typ.)
* Rail-to-Rail Switching on Data I/O Ports
–0-to 5-V Switching With 3.3-V VCC
–0-to 3.3-V Switching With 2.5-V VCC
* Bidirectional Data Flow With Near-Zero Propagation Delay
* Low Input / Output Capacitance Minimizes Loading and
Signal Distortion
* Fast Switching Frequency (fOE=20MHz Max)
* Data and Control Inputs Provide Undershoot Clamp
Diodes
* Low Power Consumption (ICC=1mA Typical)
* VCC Operating Range From 2.3V to 3.6V
* Data I/Os Support 0 to 5V Signaling Levels
(0.8V,1.2V,1.5V,1.8V,2.5V,3.3V,5V)
* 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 Exceeds100mA Per JESD
78, Class II
* Supports Both Digital and Analog Applications :PCI
Interface, Differential Signal Interface, Memory
Interleaving, Bus Isolation, Low-Distortion Signal
Gating