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DM54LS260 DM74LS260 Dual 5-Input NOR Gate April 1992 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 A L X X X X H B L X X X H X C L X X H X X D L X H X X X E L H X X X X Outputs Y H L L L L L C1995 National Semiconductor Corporation TL F 9824 RRD-B30M115 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications 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 Storage Temperature Range b 65 C to a 150 C 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 Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Free Air Operating Temperature b 55 DM54LS260 Nom 5 Max 55 Min 4 75 2 07 b0 4 DM74LS260 Nom 5 Max 5 25 Units V V 08 b0 4 45 2 V mA mA C 4 125 0 8 70 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI VOH Parameter Input Clamp Voltage High Level Output Voltage Low Level Output Voltage Conditions VCC e Min II e b 18 mA VCC e Min IOH e Max VIL e Max VCC e Min IOL e Max VIH e Min IOL e 4 mA VCC e Min II IIH IIL Input Current Input Voltage Max VCC e Max VI e 7V VI e 10V VCC e Max VI e 2 7V VCC e Max VI e 0 4V DM54 DM74 IOS Short Circuit Output Current Supply Current with Outputs High Supply Current with Outputs Low VCC e Max (Note 2) VCC e Max VIN e GND VCC e Max VIN e Open DM54 DM74 b 20 b 20 Min Typ (Note 1) Max b1 5 Units V V DM54 DM74 DM54 DM74 DM74 DM54 25 27 04 05 04 01 20 b 0 40 b 0 36 b 100 b 100 VOL V mA mA mA High Level Input Current Low Level Input Current mA mA mA ICCH ICCL 40 55 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 Symbol tPLH tPHL Parameter Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output TA e a 25 C RL e 2 kX CL e 15 pF Min Max 10 12 ns ns Units 2 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 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 Fran ais 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