ON Semiconductor 74FST3126 is a quad high performance switch. The device is CMOS TTL compatible when operating between 4 and 5.5 V. The device has very low RON and adds almost zero propagation delay. The device does not add noise or ground bounce to the system. The device contains four independent 1-bit switches with separate output/enable (OE) pins. When OE is high, port A is connected to port B. If OE is low, the switch is high Z.