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Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.74AC138 74ACT138 1-of-8 Decoder/Demultiplexer November 1988 Revised July 2003 74AC138 74ACT138 1-of-8 Decoder/Demultiplexer General Description Features The AC/ACT138 is a high-speed 1-of-8 decoder/demulti- I reduced by 50% CC plexer. This device is ideally suited for high-speed bipolar Demultiplexing capability memory chip select address decoding. The multiple input Multiple input enable for easy expansion enables allow parallel expansion to a 1-of-24 decoder Active LOW mutually exclusive outputs using just three AC/ACT138 devices or a 1-of-32 decoder using four AC/ACT138 devices and one inverter. Outputs source/sink 24 mA ACT138 has TTL-compatible inputs Ordering Code: Order Number Package Number Package Description 74AC138SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74AC138SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74AC138MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC138PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide 74ACT138SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74ACT138SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74ACT138PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Device also available in Tape and Reel. Specify by appending suffix letter X to the ordering code. Connection Diagram Logic Symbols IEEE/IEC Pin Descriptions Pin Names Description A A Address Inputs 0 2 E E Enable Inputs 1 2 E Enable Input 3 O O Outputs 0 7 FACT is a trademark of Fairchild Semiconductor Corporation. 2003 Fairchild Semiconductor Corporation DS009925 www.fairchildsemi.com