DM7427 NSC | Alldatasheet

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DM7427 Triple 3-Input NOR Gates June 1989 DM7427 Triple 3-Input NOR Gates General Description This device contains three independent gates each of which performs the logic NOR function. Connection Diagram Dual-In-Line Package TL/F/6509–1 Order Number DM7427N See NS Package Number N14A Function Table Y e A a B a C Inputs Output ABC Y LLL H XXH L XHX L HXX L H e High Logic Level L e Low Logic Level X e Either High or Low Logic Level C1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.

Absolute Maximum Ratings (Note) Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature Range DM74 0 §Ct o a70§C Storage Temperature Range b65§Ct o a150§C Note: The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaran- teed. 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 Parameter DM7427 Units Min Nom Max VCC Supply Voltage 4.75 5 5.25 V VIH High Level Input Voltage 2 V VIL Low Level Input Voltage 0.8 V IOH High Level Output Current b0.8 mA IOL Low Level Output Current 16 mA TA Free Air Operating Temperature 0 70 §C Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units(Note 1) VI Input Clamp Voltage V CC e Min, I I eb 12 mA b1.5 V VOH High Level Output V CC e Min, I OH e Max 2.4 3.4 VVoltage V IL e Max VOL Low Level Output V CC e Min, I OL e Max 0.2 0.4 VVoltage V IH e Min II Input Current @ Max V CC e Max, V I e 5.5V 1m AInput Voltage IIH High Level Input Current V CC e Max, V I e 2.4V 40 mA IIL Low Level Input Current V CC e Max, V I e 0.4V b1.6 mA IOS Short Circuit V CC e Max (Note 2) b18 b57 mAOutput Current ICCH Supply Current with V CC e Max 10 16 mAOutputs High ICCL Supply Current with V CC e Max 16 26 mAOutputs Low Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time C L e 15 pF 11 nsLow to High Level Output R L e 400X tPHL Propagation Delay Time 15 nsHigh to Low Level Output Note 1: All typicals are at V CC e 5V, T A e 25§C. Note 2: Not more than one output should be shorted at a time.

DM7427 Triple 3-Input NOR Gates Physical Dimensions inches (millimeters) 14-Lead Molded Dual-In-Line Package (N) Order Number DM7427N 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 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd. Japan Ltd.

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