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| DM74LS51 Dual 2-Wide 2-Input, 2-Wide 3-Input AND-OR-INVERT Gate August 1986 Revised March 2000 DM74LS51 Dual 2-Wide 2-Input, 2-Wide 3-Input AND-OR-INVERT Gate General Description This device contains two independent combinations of gates each of which performs the logic AND-OR-INVERT function. Each package contains one 2-wide 2-input and one 2-wide 3-input AND-OR-INVERT gates. Ordering Code: Order Number DM74LS51M DM74LS51N Package Number M14A N14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Connection Diagram Function Table Y1 = (A1) (B1) (C1) + (D1) (E1) (F1) Inputs A1 H X B1 H X C1 H X D1 X H E1 X H F1 X H Output Y1 L L H Other Combinations Y2 = ((A2) (B2) + (C2) (D2)) Inputs A2 H X B2 H X C2 X H D2 X H Output Y2 L L H Other combinations H = HIGH Logic Level L = LOW Logic Level X = Either LOW or HIGH Logic Level (c) 2000 Fairchild Semiconductor Corporation DS006369 www.fairchildsemi.com DM74LS51 Absolute Maximum Ratings(Note 1) Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 7V 0C to +70C -65C to +150C Note 1: 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 tables 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 Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature 0 Parameter Min 4.75 2 0.8 -0.4 8 70 Nom 5 Max 5.25 Units V V V mA mA C Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI VOH VOL Parameter Input Clamp Voltage HIGH Level Output Voltage LOW Level Output Voltage II IIH IIL IOS ICCH ICCL Input Current @ Max Input Voltage HIGH Level Input Current LOW Level Input Current Short Circuit Output Current Supply Current with Outputs HIGH Supply Current with Outputs LOW Conditions VCC = Min, II = -18 mA VCC = Min, IOH = Max, VIL = Max VCC = Min, IOL = Max, VIH = Min IOL = 4 mA, VCC = Min VCC = Max, VI = 7V VCC = Max, VI = 2.7V VCC = Max, VI = 0.4V VCC = Max (Note 3) VCC = Max VCC = Max -20 0.8 1.4 2.7 3.4 0.35 0.25 0.5 0.4 0.1 20 -0.36 -100 1.6 2.8 mA A mA mA mA mA Min Typ (Note 2) Max -1.5 Units V V V Note 2: All typicals are at VCC = 5V, TA = 25C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Switching Characteristics at VCC = 5V and TA = 25C Symbol tPLH tPHL Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output Parameter CL = 50 pF, RL = 2 k Min 4 3 Max 18 15 Units ns ns www.fairchildsemi.com 2 DM74LS51 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Package Number M14A 3 www.fairchildsemi.com DM74LS51 Dual 2-Wide 2-Input, 2-Wide 3-Input AND-OR-INVERT Gate Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N14A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'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 FAIRCHILD 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 (c) 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. www.fairchildsemi.com 4 2. A critical component in 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. www.fairchildsemi.com |
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