July 1989 DM54LS450/DM74LS450 16:1 Multiplexer General Description Features/Benefits The 16:1 Mux selects one of sixteen inputs, E0 through E15, specified by four binary select inputs, A, B, C, and D. The true data is output on Y and the inverted data on W. Propagation delays are the same for both inputs and addresses and are specified for 50 pF loading. Outputs conform to the standard 8 mA LS totem pole drive standard. Y Connection Diagram Standard Test Load Y Y 24-pin SKINNYDIP saves space Similar to 74150 (Fat DIP) Low current PNP inputs reduce loading Top View TL/L/8338 – 2 TL/L/8338 – 1 Order Number DM54LS450J, DM74LS450J, DM74LS450N or DM74LS450V See NS Package Number J24F, N24C or V28A Function Table Input Select C1995 National Semiconductor Corporation Output D C B A W Y L L L L L L L L H H H H H H H H L L L L H H H H L L L L H H H H L L H H L L H H L L H H L L H H L H L H L H L H L H L H L H L H E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 E10 E11 E12 E13 E14 E15 E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 E10 E11 E12 E13 E14 E15 TL/L/8338 RRD-B30M115/Printed in U. S. A. DM54LS450/DM74LS450 16:1 Multiplexer PRELIMINARY Absolute Maximum Ratings Off-State Output Voltage If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage VCC 5.5V Storage Temperature b 65§ to a 150§ C 7V Input Voltage 5.5V Operating Conditions Symbol Military Parameter VCC Supply Voltage TA Operating Free-Air Temperature Min Nom 4.5 5 Commercial b 55 Units Max Min Nom Max 5.5 4.75 5 5.25 V 125* 0 75 §C *Case temperature Electrical Characteristics Over Operating Conditions Symbol Parameter Test Conditions VIL Low-Level Input Voltage VIH High-Level Input Voltage VIC Input Clamp Voltage VCC e MIN II eb18 mA IIL Low-Level Input Current VCC e MAX IIH High-Level Input Current II Maximum Input Current VOL Low-Level Output Voltage VCC e MIN VIL e 0.8V VIH e 2V VOH High-Level Output Voltage VCC e MIN VIL e 0.8V VIH e 2V IOS ICC Min Typ ² Max 0.8 2 Units V V b 1.5 V VI e 0.4V b 0.25 mA VCC e MAX VI e 2.4V 25 mA VCC e MAX VI e 5.5V 1 mA 0.5 V Output Short-Circuit Current* VCC e 5.0V Supply Current VCC e MAX IOL e 8 mA MIL IOH eb2 mA COM IOH eb3.2 mA VO e 0V 2.4 V b 30 60 b 130 mA 100 mA *No more than one output should be shorted at a time and duration of the short-circuit should not exceed one second. ² All typical values are at VCC e 5V, TA e 25§ C. Switching Characteristics Over Operating Conditions Symbol tPD Parameter Any Input to Y or W Test Conditions (See Test Load) Military Min CL e 50 pF R1 e 560X R2 e 1.1kX 2 Commercial Typ Max 25 45 Min Units Typ Max 25 40 ns Logic Diagram 16:1 Mux TL/L/8338 – 3 3 4 Physical Dimensions inches (millimeters) 24-Pin Narrow Ceramic Dual-In-Line Package (J) Order Number DM54LS450J or DM74LS450J NS Package Number J24F 24-Pin Narrow Plastic Dual-In-Line Package (N) Order Number DM74LS450N NS Package Number N24C 5 DM54LS450/DM74LS450 16:1 Multiplexer Physical Dimensions inches (millimeters) (Continued) 28-Lead Plastic Chip Carrier (V) Order Number DM74LS450V NS Package Number V28A LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation 1111 West Bardin Road Arlington, TX 76017 Tel: 1(800) 272-9959 Fax: 1(800) 737-7018 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Europe Fax: (a49) 0-180-530 85 86 Email: cnjwge @ tevm2.nsc.com Deutsch Tel: (a49) 0-180-530 85 85 English Tel: (a49) 0-180-532 78 32 Fran3ais Tel: (a49) 0-180-532 93 58 Italiano Tel: (a49) 0-180-534 16 80 National Semiconductor Hong Kong Ltd. 13th Floor, Straight Block, Ocean Centre, 5 Canton Rd. Tsimshatsui, Kowloon Hong Kong Tel: (852) 2737-1600 Fax: (852) 2736-9960 National Semiconductor Japan Ltd. Tel: 81-043-299-2309 Fax: 81-043-299-2408 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.