714508EB ON Semiconductor

MC74HC138A 1-of-8 Decoder/ Demultiplexer HighPerformance SiliconGate CMOS The MC74HC138A is identical in pinout to the LS138. The device MC74HC138A 1 15 A0 Y0 ADDRESS 14 2 Y1 A1 A0 1 16 INPUTS V 13 CC Y2 3 12 2 15 A1 Y0 A2 ACTIVE-LOW Y3 11 OUTPUTS 3 14 Y1 Y4 A2 10 Y5 CS2 4 13 Y2 9 Y6 CS3 5 12 Y3 7 Y7 6 11 CS1 Y4 6 Y7 7 10 Y5 CS1 CHIP- PIN 16 = V CC 4 GND 8 9 Y6 SELECT CS2 PIN 8 = GND INPUTS 5 CS3 Figure 1. Pin Assignment Figure 2. Logic Diagram FUNCTION TABLE Inputs Outputs CS1CS2 CS3 A2 A1 A0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X X H X X X HHH HHHH H X H X X X X HHH HHHH H L X X X X X HHH HHHH H H L L L L L L H H HHHH H H L L L L H H L H HHHH H H L L L H L HH L HHHH H H L L L H H HHH L HHH H H L L H L L HHH H L HH H H L L H L H HHH HH L H H H L L H H L HHH HHH L H H L L H H H HHH HHHH L H = high level (steady state); L = low level (steady state); X = dont care ORDERING INFORMATION Device Package Shipping MC74HC138ANG PDIP16 500 Units / Rail (Pb Free) MC74HC138ADG SOIC16 48 Units / Rail (Pb Free) MC74HC138ADR2G SOIC16 2500 / Tape & Reel (Pb Free) MC74HC138ADTR2G TSSOP16 2500 / Tape & Reel (Pb Free) NLV74HC138ADR2G* SOIC16 2500 / Tape & Reel (Pb Free) NLV74HC138ADTR2G* TSSOP16 2500 / Tape & Reel (Pb Free) 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. *NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AECQ100 Qualified and PPAP Capable