The ON Semiconductor 74FST3126 is a quad, high performance switch. The device is CMOS TTL compatible when operating between 4 and 5.5 Volts. The device exhibits extremely low R
and adds nearly zero propagation delay. The device adds no noise or ground bounce to the system.
The device consists of four independent 1-bit switches with separate Output/Enable (OE) pins. Port A is connected to Port B when OE is high. If OE is low, the switch is high Z.

• R
• < 4 Ω Typical
• Less Than 0.25 ns–Max Delay Through Switch
• Nearly Zero Standby Current
• No Circuit Bounce
• Control Inputs are TTL/CMOS Compatible
• Pin–For–Pin Compatible With QS3126, FST3126, CBT3126
• All Popular Packages: QSOP–16, TSSOP–14, SOIC–14
• All Devices in Package TSSOP are Inherently Pb-Free*