General Description

The VS3245 and VS32245 are high-speed TTL–compatible 8-bit bus switches. The VS3245 contains eight high-speed bus switches, with a common active low enable (/OE). The low ON resistance of the VS3245 allows inputs to be connected to outputs, without adding propagation delay and without generating additional signal noise. The VS32245 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 (VS3245) and 25Ω (VS32245)

• Pin-compatible with QS3245 and CBT3245

switches.

• 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