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74FST3257 Datasheet(PDF) 1 Page - ON Semiconductor |
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74FST3257 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 8 page © Semiconductor Components Industries, LLC, 2007 January, 2007 − Rev. 4 1 Publication Order Number: 74FST3257/D 74FST3257 Quad 2:1 Multiplexer/ Demultiplexer Bus Switch The ON Semiconductor 74FST3257 is a quad 2:1, 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. Features • 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 • Pin−For−Pin Compatible With QS3257, FST3257, CBT3257 • All Popular Packages: SOIC−16, TSSOP−16, QSOP−16 • Pb−Free Packages are Available 1A 2A 2B2 2B1 1B2 S VCC OE GND 3A 1 2 3 4 5 6 7 16 15 14 13 12 11 10 89 Figure 1. 16−Lead Pinout Figure 2. Truth Table 1B1 4B1 4B2 4A 3B2 X L H S Function H L L OE Disconnect A = B1 A = B2 3B1 A = Assembly Location WL, L = Wafer Lot Y = Year WW, W = Work Week G = Pb−Free Package TSSOP−16 DT SUFFIX CASE 948F 16 1 QSOP−16 QS SUFFIX CASE 492 SOIC−16 D SUFFIX CASE 751B 16 1 1 16 FST3257G AWLYWW MARKING DIAGRAMS 16 1 16 1 1 16 FST 3257 ALYW G G S3257 ALYW Description PIN NAMES OE1, OE2 S0, S1 Pin Bus Switch Enables Select Inputs A Bus A B1, B2, B3, B4 Bus B See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. ORDERING INFORMATION http://onsemi.com (Note: Microdot may be in either location) |
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