16-Bit Bus Switch (Preliminary)
Preliminary
FST16244 16-Bit Bus Switch (Preliminary)
May 2001 Revised May 2001
FST16244 16-Bit Bus Switch (Preliminar...
Description
Preliminary
FST16244 16-Bit Bus Switch (Preliminary)
May 2001 Revised May 2001
FST16244 16-Bit Bus Switch (Preliminary)
General Description
The Fairchild Switch FST16244 provides 16-bits of highspeed CMOS TTL-compatible 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 16-bit switch. There are four 4-bit switches with separate output enable inputs. When OE is LOW, the switch in ON and Port A is connected to Port B. When OE is HIGH, the switch OFF and a high impedance state exists between the A and B Ports.
Features
s 4Ω switch connection between two ports. s Minimal propagation delay through the switch. s Low lCC. s Zero bounce in flow-through mode. s Control inputs compatible with TTL level.
Ordering Code:
Order Number FST16244MTD Package Number MTD48 Package Description 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.
Connection Diagram
Logic Diagram
Pin Descriptions
Pin Name OEn 1An, 2An, 3An, 4An 1Bn, 2Bn, 3Bn, 4Bn Description Output Enable Input (Active LOW) Bus A Bus B
Truth Table
Inputs OEx L H
H = HIGH Voltage Level L = LOW Voltage Level
Outputs A, B A Port = B Port Z
Z = High Impedance
© 2001 Fairchild Semiconductor Corporation
DS500420
www.fairchildsemi.com
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