2.5V/3.3V 10-Bit High Bandwidth Bus Switch

The QS3VH384 Hot Switch is a high bandwidth, 10-bit bus switch. The QS3VH384 has very low ON resistance, resulting in under 250ps propagation delay through the switch. Two 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 switch 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 QS3VH384 ideal for high performance communications applications. The QS3VH384 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
• B port precharged to user-selectable VBIAS
• 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 TSSOP package