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FST162861MTD Fiches technique(PDF) 1 Page - Fairchild Semiconductor |
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FST162861MTD Fiches technique(HTML) 1 Page - Fairchild Semiconductor |
1 / 4 page © 2000 Fairchild Semiconductor Corporation DS500319 www.fairchildsemi.com March 2000 Revised March 2000 FST162861 20-Bit Bus Switch with 25 Ω Series Resistors in Outputs General Description The Fairchild Switch FST162861 provides 20-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 10-bit or 20-Bit bus switch. When OE1 is LOW, the switch is ON and Port 1A is con- nected to Port 1B. When OE2 is LOW, Port 2A is connected to Port 2B. When OEX is HIGH, a high impedance state exists between the A and B ports. The FST162861 has an equivalent 25 Ω series resistors to reduce signal-reflection noise, eliminating the need for external terminating resis- tors. Features s 25 Ω 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: 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 Order Number Package Number Package Description FST162861MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Pin Name Description OE1, OE2 Bus Switch Enables 1A, 2A Bus A 1B, 2B Bus B Inputs Inputs/Outputs OE1 OE2 1A, 1B 2A, 2B LL 1A = 1B 2A = 2B LH 1A = 1B Z HL Z 2A = 2B HH Z Z |
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