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Partno Mfg Dc Qty AvailableDescript
FST3244MTCFSCN/a54avai8-Bit Bus Switch
FST3244MTCXFSCN/a4500avai8-Bit Bus Switch
FST3244QSCXFAIRCHILN/a5000avai8-Bit Bus Switch
FST3244QSCXNSN/a2500avai8-Bit Bus Switch
FST3244WMXFAIRCHILN/a2000avai8-Bit Bus Switch
FST3244WMXFAIRCN/a2000avai8-Bit Bus Switch


FST3244QSCX ,8-Bit Bus SwitchFST3244 8-Bit Bus SwitchJune 1997Revised January 2005FST32448-Bit Bus Switch
FST3244QSCX ,8-Bit Bus SwitchElectrical CharacteristicsT

FST3244MTC-FST3244MTCX-FST3244QSCX-FST3244WMX
8-Bit Bus Switch
FST3244 8-Bit Bus Switch June 1997 Revised January 2005 FST3244 8-Bit Bus Switch General Description Features The Fairchild Switch FST3244 provides 8-bits of high- ■ 4 switch connection between two ports. speed CMOS TTL-compatible bus switching in a standard ■ Minimal propagation delay through the switch. ’244 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 two 4-bit switches with separate OE inputs. 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-impedance state exists between the two ports. Ordering Code: Order Number Package Number Package Description FST3244WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide FST3244QSC MQA20 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide FST3244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide FST3244MTCX_NL MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, (Note 1) 4.4mm 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 Inputs Inputs/Outputs OE OE 1A, 1B 2A, 2B 1 2 LL 1A 1B 2A 2B Pin Descriptions LH 1A 1B Z Pin Name Description HL Z 2A 2B OE , OE Bus Switch Enable 1 2 HH Z Z 1A, 2A Bus A 1B, 2B Bus B © 2005 DS500021
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