74HCT157DR2G ON Semiconductor

74HCT157 Quad 2Input Data Selectors / Multiplexers HighPerformance SiliconGate CMOS The 74HCT157 is identical in pinout to the LS157. The device 74HCT157 2 A0 5 A1 NIBBLE 11 A INPUTS A2 4 SELECT 1 16 V Y0 CC 14 A3 7 OUTPUT A0 2 15 Y1 ENABLE DATA 9 Y2 3 OUTPUTS B0 3 14 A3 B0 12 Y3 6 Y0 4 13 B3 B1 NIBBLE 10 A1 5 12 Y3 B2 B INPUTS 13 PIN 16 = V CC B1 6 11 A2 B3 PIN 8 = GND Y1 7 10 B2 1 GND 8 9 Y2 SELECT 15 OUTPUT ENABLE Figure 1. Pin Assignment Figure 2. Logic Diagram FUNCTION TABLE Inputs Output Outputs Enable Select Y0 Y3 H X L L L A0 A3 L H B0 B3 X = dont care A0 A3, B0 B3 = the levels of the respective Data Word Inputs. ORDERING INFORMATION Device Package Shipping 74HCT157DR2G SOIC16 2500 Units / Reel (Pb Free) 74HCT157DTR2G TSSOP16* 2500 Units / Reel For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *This package is inherently Pb Free.