DM54LS260/DM74LS260 Dual 5-Input NOR Gate General Description This device contains two individual five input gates, each of which perform the logic NOR function. Connection Diagram Dual-In-Line Package TL/F/9824 – 1 Order Number DM54LS260J, DM54LS260W, DN54LS260E, DM74LS260M or DM74LS260N See NS Package Number E20A, J14A, M14A, N14A or W14B Truth Table AaBaCaDaEeY Inputs C1995 National Semiconductor Corporation TL/F/9824 Outputs A B C D E Y L X X X X H L X X X H X L X X H X X L X H X X X L H X X X X H L L L L L RRD-B30M115/Printed in U. S. A. DM54LS260/DM74LS260 Dual 5-Input NOR Gate April 1992 Absolute Maximum Ratings (Note) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Note: The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings. The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation. Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55§ C to a 125§ C DM54LS DM74LS 0§ C to a 70§ C b 65§ C to a 150§ C Storage Temperature Range Recommended Operating Conditions Symbol DM54LS260 Parameter DM74LS260 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 V 0.7 0.8 V VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH High Level Output Current b 0.4 b 0.4 mA IOL Low Level Output Current 4 8 mA 70 §C TA Free Air Operating Temperature 2 2 b 55 125 V 0 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Typ (Note 1) Min Max Units b 1.5 V VI Input Clamp Voltage VCC e Min, II e b 18 mA VOH High Level Output Voltage VCC e Min, IOH e Max VIL e Max DM54 2.5 DM74 2.7 Low Level Output Voltage VCC e Min, IOL e Max VIH e Min DM54 0.4 DM74 0.5 IOL e 4 mA, VCC e Min DM74 0.4 Input Current @ Max Input Voltage VCC e Max, VI e 7V VI e 10V DM54 IIH High Level Input Current VCC e Max, VI e 2.7V IIL Low Level Input Current VCC e Max, VI e 0.4V VOL II IOS ICCH ICCL V V 0.1 mA 20 mA DM54 b 0.40 DM74 b 0.36 DM54 b 20 b 100 DM74 b 20 b 100 mA Short Circuit Output Current VCC e Max (Note 2) Supply Current with Outputs High VCC e Max, VIN e GND 4.0 mA Supply Current with Outputs Low VCC e Max, VIN e Open 5.5 mA Note 1: All typicals are at VCC e 5V, TA e 25§ C. Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second. Switching Characteristics VCC e a 5V, TA e a 25§ C Symbol RL e 2 kX, CL e 15 pF Parameter Min Units Max tPLH Propagation Delay Time Low to High Level Output 10 ns tPHL Propagation Delay Time High to Low Level Output 12 ns 2 mA 3 Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) Order Number DM54LS260E NS Package Number E20A 14-Lead Ceramic Dual-In-Line Package (J) Order Number DM54LS260J NS Package Number J14A 4 Physical Dimensions inches (millimeters) (Continued) 14-Lead Small Outline Molded Package (M) Order Number DM74LS260M NS Package Number M14A 14-Lead Molded Dual-In-Line Package (N) Order Number DM74LS260N NS Package Number N14A 5 DM54LS260/DM74LS260 Dual 5-Input NOR Gate Physical Dimensions inches (millimeters) (Continued) 14-Lead Ceramic Flat Package (W) Order Number DM54LS260W NS Package Number W14B 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. 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