MC74HC238A 1-of-8 Decoder/ Demultiplexer HighPerformance SiliconGate CMOS The MC74HC238A is identical in pinout to the LS238. The device www.onsemi.com inputs are compatible with standard CMOS outputs with pullup resistors, they are compatible with LSTTL outputs. MARKING The HC238A decodes a threebit Address to oneofeight DIAGRAMS activehigh outputs. This device features three Chip Select inputs, two 16 activelow and one activehigh to facilitate the demultiplexing, SOIC16 cascading, and chipselecting functions. The demultiplexing function HC238AG D SUFFIX 16 is accomplished by using the Address inputs to select the desired AWLYWW CASE 751B 1 device output one of the Chip Selects is used as a data input while the 1 other Chip Selects are held in their active states. 16 Features Output Drive Capability: 10 LSTTL Loads TSSOP16 HC 16 238A DT SUFFIX Outputs Directly Interface to CMOS, NMOS and TTL ALYW CASE 948F 1 Operating Voltage Range: 2.0 V to 6.0 V Low Input Current: 1.0 A 1 High Noise Immunity Characteristic of CMOS Devices A = Assembly Location In Compliance with the Requirements Defined by JEDEC WL, L = Wafer Lot Y = Year Standard No. 7A WW, W = Work Week Chip Complexity: 100 FETs or 29 Equivalent Gates G or = PbFree Package NLV Prefix for Automotive and Other Applications Requiring (Note: Microdot may be in either location) Unique Site and Control Change Requirements AECQ100 Qualified and PPAP Capable ORDERING INFORMATION These are PbFree Devices* See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. *For additional information on our PbFree strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Semiconductor Components Industries, LLC, 2013 1 Publication Order Number: January, 2018 Rev. 5 MC74HC238A/DMC74HC238A 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-HIGH Y3 11 OUTPUTS 3 14 Y1 A2 Y4 10 Y5 CS2 4 13 Y2 9 Y6 5 CS3 12 Y3 7 Y7 6 11 CS1 Y4 6 7 10 Y7 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 ORDERING INFORMATION Device Package Shipping MC74HC238ADG SOIC16 48 Units / Rail (PbFree) MC74HC238ADR2G SOIC16 2500 Tape & Reel (PbFree) NLV74HC238ADR2G* MC74HC238ADTG TSSOP16 96 Units / Tube (PbFree) MC74HC238ADTR2G TSSOP16 2500 Tape & Reel (PbFree) NLV74HC238ADTR2G* 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. TRUTH TABLE Inputs Outputs CS3 CS2 CS1 A0 A1 A2 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 H X X X X X L L L L L L L L X H X X X X L L L L L L L L X X L X X X L L L L L L L L L L H L L L H L L L L L L L L L H H L L L H L L L L L L L L H L H L L L H L L L L L L L H H H L L L L H L L L L L L H L L H L L L L H L L L L L H H L H L L L L L H L L L L H L H H L L L L L L H L L L H H H H L L L L L L L H www.onsemi.com 2