Revised February 2000 DM7420 Dual 4-Input NAND Gate General Description This device contains two independent gates each of which performs the logic NAND function. Ordering Code: Order Number DM7420N Package Number N14A Package Description 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Connection Diagram Function Table Y = ABCD Inputs Output A B C D Y X X X L H X X L X H X L X X H L X X X H H H H H L H = HIGH Logic Level L = LOW Logic Level X = Either LOW or HIGH Logic Level © 2000 Fairchild Semiconductor Corporation DS006506 www.fairchildsemi.com DM7420 Dual 4-Input NAND Gate August 1986 DM7420 Absolute Maximum Ratings(Note 1) Supply Voltage 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. 7V Input Voltage 5.5V 0°C to +70°C Operating Free Air Temperature Range −65°C to +150°C Storage Temperature Range Recommended Operating Conditions Symbol Parameter Min Nom Max Units 4.75 5 5.25 V LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −0.4 mA IOL LOW Level Output Current 16 mA TA Free Air Operating Temperature 70 °C VCC Supply Voltage VIH HIGH Level Input Voltage VIL 2 V 0 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions VI Input Clamp Voltage VCC = Min, II = −12 mA VOH HIGH Level VCC = Min, IOH = Max Output Voltage VIL = Max VOL II LOW Level VCC = Min, IOL = Max Output Voltage VIH = Min Input Current @ Max VCC = Max, VI = 5.5V Min 2.4 Typ (Note 2) Max Units −1.5 V 3.4 0.2 V 0.4 V 1 mA Input Voltage IIH HIGH Level Input Current VCC = Max, VI = 2.4V 40 µA IIL LOW Level Input Current VCC = Max, VI = 0.4V −1.6 mA IOS Short Circuit Output Current VCC = Max (Note 3) −55 mA ICCH Supply Current with Outputs HIGH VCC = Max 2 4 mA ICCL Supply Current with Outputs LOW VCC = Max 6 11 mA Min Max Units 22 ns 15 ns −18 Note 2: All typicals are at VCC = 5V, TA = 25°C. Note 3: Not more than one output should be shorted at a time. Switching Characteristics at VCC = 5V and TA = 25°C Symbol tPLH tPHL Parameter Conditions Propagation Delay Time CL = 15 pF LOW-to-HIGH Level Output RL = 400Ω Propagation Delay Time HIGH-to-LOW Level Output www.fairchildsemi.com 2 DM7420 Dual 4-Input NAND Gate Physical Dimensions inches (millimeters) unless otherwise noted 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: 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. 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 3 www.fairchildsemi.com WWW.ALLDATASHEET.COM Copyright © Each Manufacturing Company. All Datasheets cannot be modified without permission. This datasheet has been download from : www.AllDataSheet.com 100% Free DataSheet Search Site. Free Download. No Register. Fast Search System. www.AllDataSheet.com