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FST162245 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FST162245 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 4 page © 2001 Fairchild Semiconductor Corporation DS500431 www.fairchildsemi.com April 2001 Revised April 2001 FST162245 16-Bit Bus Switch with 25 Ω Series Resistors in Outputs General Description The Fairchild Switch FST162245 provides 16-bits of high- speed 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 two 8-bit switches with separate output enable inputs. When OE is LOW, the switch is ON and Port a is connected to Port B. When OE is HIGH, the switch is OFF and a high impedance state exists between the A and B Ports. The FST162245 has an equivalent 25 Ω series resistors to reduce signal-reflection noise, eliminating the need for external terminating resistors. Features I 25 Ω switch connection between two ports I Minimal propagation delay through the switch I Low lCC I Zero bounce in flow-through mode I Control inputs compatible with TTL level Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Pin Descriptions Logic Diagram Truth Table H = HIGH Voltage Level L = LOW Voltage Level Z = High Impedance Order Number Package Number Package Description FST162245MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Pin Name Description OEn Output Enable Input (Active LOW) 1An, 2An, 3An, 4An Bus A 1Bn, 2Bn, 3Bn, 4Bn Bus B NC No Internal Connection Inputs Outputs OEx A, B LA Port = B Port HZ |
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