General Description

The VS3345 and VS32345 are high-speed TTL–compatible 8-bit bus switches. The VS3345 contains eight high-speed bus switches, with common active low (/OE) and active high (OE) enables. The low ON resistance of the VS3345 allows inputs to be connected to outputs, without adding propagation delay and without generating additional signal noise. The VS32345 has 25Ω resistors in series with the switches to reduce ground-bounce noise and signal reflection.

Features

• Enhanced N-FET with no DC path to VCC

or GND in normal operating signal voltage

range.

• Low impedance bidirectional data flow:

5Ω (VS3345) and 25Ω (VS32345)

• Near-zero propagation delay

• Zero added ground bounce or signal noise

• TTL-compatible control signals

• Undershoot clamp diodes on all switch and

control pins

• ESD rating >2000V (Human Body Model)

or >200V (Machine Model)

• Latch-up current >100mA

• Available in 150-mil wide QSOP package

Applications

• 5V to 3.3V translation in mixed-supply environment

• Hot-swap interface

• Logic replacement

• Bus isolation