FSTU16862 Datasheet | Fairchild Semiconductor

FSTU16862 20-Bit Bus Switch with - 2V Undershoot Protection May 2002 Revised May 2002 FSTU16862 20-Bit Bus Switch with - 2V Undershoot Protection General Description The Fairchild Switch FSTU16862 provides 20-bits of highspeed CMOS TTL-patible bus switching. 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 a 20-bit bus switch. When OEX is LOW, the switch is ON and Port A is connected to Port B. When OEX is HIGH, a high impedance state exists between the A and B Ports. The A and B Ports are protected against undershoot to support an extended range to 2.0V below ground. Fairchild’s integrated Undershoot Hardened Circuit (UHC) senses undershoot at the I/O and responds by preventing voltage differentials from developing and turning the switch on. Features s Undershoot hardened to - 2V (A and B Ports) s 4Ω switch connection between two ports s Minimal propagation delay through the switch s Low l CC s Zero bounce in flow-through mode s Control inputs patible with TTL level s See Application Note AN-5008 for details on FSTU - Undershoot Protected Fairchild Switch Family Ordering Code: Order Number FSTU16862QSP FSTU16862MTD Package Number MQA48A MTD48 Package Description 48-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. UHC is a trademark of Fairchild Semiconductor Corporation. © 2002 Fairchild Semiconductor Corporation DS500703 .fairchildsemi. Logic Diagram Connection Diagram Pin Descriptions Pin Name OEx A B Description Bus Switch Enables Bus A Bus B Truth Table Inputs OEx L H H = HIGH Voltage Level L = LOW Voltage Level Z = High Impedance Inputs/Outputs A, B A=B Z .fairchildsemi....