74FST3251

74FST3251 8:1 Multiplexer/ Demultiplexer Bus Switch The ON Semiconductor 74FST3251 is an 8:1, high performance multiplexer/demultiplexer bus switch. The device is CMOS TTL compatible when operating between 4 and 5.5 Volts. The device exhibits extremely low RON and adds nearly zero propagation delay. The device adds no noise or ground bounce to the system. RON t 4 W Typical Less Than 0.25 ns–Max Delay Through Switch Nearly Zero Standby Current No Circuit Bounce Control Inputs are TTL/CMOS Compatible All Popular Packages: QSOP–16, TSSOP–16, SOIC–16 http://onsemi.com MARKING DIAGRAMS 16 16 1 SO–16 D SUFFIX CASE 751B FST3251 AWLYWW 1 16 16 1 TSSOP–16 DT SUFFIX CASE 948F FST 3251 ALYW 1 16 S3251 ALYW B4 B3 B2 B1 A NC OE GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC B5 B6 B7 B8 16 1 S0 S1 S2 QSOP–16 QS SUFFIX CASE 492 A L, WL Y W, WW = = = = 1 Assembly Location Wafer Lot Year Work Week QSOP/SSOP/TSSOP TOP VIEW Inputs OE L L L L L L L L H S2 L L L L H H H H X S1 L L H H L L H H X S0 L H L H L H L H X Function A Port = B1 Port A Port = B2 Port A Port = B3 Port A Port = B4 Port A Port = B5 Port A Port = B6 Port A Port = B7 Port A Port = B8 Port Disconnect S0, S1 A PIN NAMES Pin OE1, OE2 Description Bus Switch Enables Select Inputs Bus A Bus B B1, B2, B3, B4 ORDERING INFORMATION Device 74FST3251D 74FST3251DR2 74FST3251DT 74FST3251DTR2 74FST3251QS 74FST3251QSR Package SO–16 SO–16 TSSOP–16 TSSOP–16 QSOP–16 QSOP–16 Shipping 48 Units/Rail 2500 Units/Reel 96 Units/R...