The ON Semiconductor 74FST3257 is a quad 2:1, high performance multiplexer/demultiplexer bus 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.

• 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 QS3257, FST3257, CBT3257
• All Popular Packages: QSOP-16, TSSOP-16, SOIC-16
• Pb-Free Packages are Available