FST3245QSCX ,8-Bit Bus SwitchFST3245 8-Bit Bus SwitchJune 1997Revised March 2005FST32458-Bit Bus Switch
FST3245WM ,8-Bit Bus SwitchFeaturesThe Fairchild Switch FST3245 provides 8-bits of high-
FST3245MTC-FST3245MTCX-FST3245QSC-FST3245QSCX-FST3245WM
8-Bit Bus Switch
FST3245 8-Bit Bus Switch June 1997 Revised March 2005 FST3245 8-Bit Bus Switch General Description Features The Fairchild Switch FST3245 provides 8-bits of high-4: switch connection between two ports. speed CMOS TTL-compatible bus switching in a standardMinimal propagation delay through the switch. ’245 pin-out. The low on resistance of the switch allows Low l . CC inputs to be connected to outputs without adding propaga- Zero bounce in flow-through mode. tion delay or generating additional ground bounce noise. Control inputs compatible with TTL level. The device is organized as an 8-bit switch. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and a high-imped- ance state exists between the two ports. Ordering Code: Package Order Number Package Description Number FST3245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide FST3245QSC MQA20 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide FST3245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide FST3245MTCX_NL MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm (Note 1) Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only. Logic Diagram Connection Diagram Truth Table Pin Descriptions Pin Name Description Input OE Function OE Bus Switch Enable L Connect ABus A H Disconnect BBus B © 2005 DS500020
