FST16212 ,24-Bit Bus Exchange SwitchFST16212 24-Bit Bus Exchange SwitchJuly 1997Revised December 1999FST1621224-Bit Bus Exchange Switch
FST16212MEA ,24-Bit Bus Exchange SwitchFST16212 24-Bit Bus Exchange SwitchJuly 1997Revised December 1999FST1621224-Bit Bus Exchange Switch
FST16212MTD ,24-Bit Bus Exchange SwitchFeaturesThe Fairchild Switch FST16212 provides 24-bits of high-
FST16212
24-Bit Bus Exchange Switch
FST16212 24-Bit Bus Exchange Switch July 1997 Revised December 1999 FST16212 24-Bit Bus Exchange Switch General Description Features The Fairchild Switch FST16212 provides 24-bits of high-4Ω switch connection between two ports. speed CMOS TTL-compatible bus switching or exchang-Minimal propagation delay through the switch. ing. The low on resistance of the switch allows inputs to be Low l . CC connected to outputs without adding propagation delay or Zero bounce in flow-through mode. generating additional ground bounce noise. Control inputs compatible with TTL level. The device operates as a 24-bit bus switch or a 12-bit bus exchanger, which allows data exchange between the four signal ports via the data-select terminals. Ordering Code: Order Number Package Number Package Description FST16212MEA MS56A 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide FST16212MTD MTD56 56-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. Logic Diagram Connection Diagram Truth Table A A S2 S1 S0 Function 1 2 L L L Z Z Disconnect LL H B ZA = B 1 1 1 LH L B ZA = B 2 1 2 Pin Descriptions LH H Z B A = B 1 2 1 Pin Name Description HL L Z B A = B 2 2 2 S2, S1, S0 Data-select inputs H L H Z Z Disconnect A , A Bus A HH L B B A = B , A = B 1 2 1 2 1 1 2 2 B , B Bus B HH H B B A = B , A = B 1 2 2 1 1 2 2 1 © 1999 DS500038
