FST3245 ,8-Bit Bus SwitchFST3245 8-Bit Bus SwitchJune 1997Revised December 2000FST32458-Bit Bus Switch
FST3245MTC ,8-Bit Bus SwitchElectrical CharacteristicsT
FST3245
8-Bit Bus Switch
FST3245 8-Bit Bus Switch June 1997 Revised December 2000 FST3245 8-Bit Bus Switch General Description Features The Fairchild Switch FST3245 provides 8-bits of high-4Ω 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: Order Number Package Number Package Description 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 Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. 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 © 2000 DS500020
