General Description

The VS32X245 and VS32X2245 are high-speed TTL-compatible 16-bit bus switches in a flow-through pinout. Each device contains two banks of 8-bit switches with a common active-LOW enable (/OEx) for each bank. The low ON resistance of the VS32X245 allows inputs to be connected to outputs, without adding propagation delay and without generating additional signal noise. The VS32X2245 has 25? resistors in series with the switches to reduce ground-bounce noise from the driving source 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:

5? (VS32X245) and 25? (VS32X2245)

? Pin-compatible with QS32X245 and

QS32X2245 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 40 pin QSOP

package

Applications

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

? Hot-swap interface

? Logic replacement

? Bus isolation