2.5V/3.3V 20-Bit High Bandwidth Bus Switch

The QS32XVH384 HotSwitch is a high bandwidth, 20-bit bus switch. The QS32XVH384 has very low ON resistance, resulting in under 250ps propagation delay through the switch. Four banks of five switches are controlled by independent (xOE), LVTTL compatible signals for bidirectional data flow with no added delay or ground bounce. In the ON state, the switches can pass signals up to 5V. In the OFF state, the switches offer very high impedance at the terminals. The combination of near-zero propagation delay, high OFF impedance, and over-voltage tolerance makes the QS32XVH384 ideal for high performance communications applications. The QS32XVH384 is characterized for operation from -40°C to +85°C.

• N channel FET switches with no parasitic diode to VCC
  • Isolation under power-off conditions
  • No DC path to VCC or GND - 5V tolerant in OFF and ON state
• 5V tolerant I/Os
• Low RON - 4O typical
• Flat RON characteristics over operating range
• Rail-to-rail switching 0 - 5V
• Bidirectional dataflow with near-zero delay: no added ground bounce
• Excellent RON matching between channels
• VCC operation: 2.3V to 3.6V
• High bandwidth - up to 500MHz
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
• Available in 48-pin QVSOP (S1) package