MC74VHC257

MC74VHC257 Quad 2-Channel Multiplexer with 3-State Outputs The MC74VHC257 is an advanced high speed CMOS quad 2−channel multiplexer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. It consists of four 2−input digital multiplexers with common select (S) and enable (OE) inputs. When (OE) is held High, selection of data is inhibited and all the outputs go Low. The select decoding determines whether the A or B inputs get routed to the corresponding Y outputs. The inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems to 3 V systems. High Speed: tPD = 4.1 ns (Typ) at VCC = 5.0 V Low Power Dissipation: ICC = 4.0 mA (Max) at TA = 25°C High Noise Immunity: VNIH = VNIL = 28% VCC Power Down Protection Provided on Inputs Balanced Propagation Delays Designed for 2.0 V to 5.5 V Operating Range Low Noise: VOLP = 0.8 V (Max) Pin and Function Compatible with Other Standard Logic Families Latchup Performance Exceeds 300 mA ESD Performance: HBM > 2000 V; Machine Model > 200 V Chip Complexity: FETs = 100; Equivalent Gates = 25 These Devices are Pb−Free and are RoHS Compliant http://onsemi.com MARKING DIAGRAMS SO−16 D SUFFIX CASE 751B 16 9 VHC257G AWLYWW 1 8 TSSOP−16 DT SUFFIX CASE 948F 16 9 VHC 257 ALYWG G 1 8 A = Assembly Location L, WL = Wafer Lot Y, YY = Year W, WW = Work Week G or G = Pb−Free Package S1 A0 2 B0 3 ...