General Description

The Fairchild Switch FSTU32X384 provides 20 bits of high speed CMOS TTL-compatible bus switches. The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device is organized as four 5-bit switches with separate bus enable (OE) signals. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports.

Features

■ 4Ω switch connection between two ports

■ Minimal propagation delay through the switch

■ Ultra low power with < 0.1 µA typical ICC

■ Zero ground bounce in flow-through mode

■ Control inputs compatible with TTL level

■ See Application Note AN-5008 for details on FSTU - Undershoot Protected Fairchild Switch Family