DM5438,DM7438 DM5438 DM7438 Quad 2-Input NAND Buffers with Open-Collector Outputs Literature Number: SNOS255A DM5438/DM7438 Quad 2-Input NAND Buffers with Open-Collector Outputs General Description Pull-Up Resistor Equations RMAX e VCC (Min) b VOH N1 (IOH) a N2 (IIH) VCC (Max) b VOL RMIN e IOL b N3 (IIL) Where: N1 (IOH) e total maximum output high current for all outputs tied to pull-up resistor N2 (IIH) e total maximum input high current for all inputs tied to pull-up resistor N3 (IIL) e total maximum input low current for all inputs tied to pull-up resistor e This device contains four independent gates each of which performs the logic NAND function. The open-collector outputs require external pull-up resistors for proper logical operation. et Connection Diagram bs ol Dual-In-Line Package TL/F/6513 – 1 Order Number DM5438J, DM5438W, DM7438M or DM7438N See NS Package Number J14A, M14A, N14A or W14B O Function Table Y e AB Inputs Output A B Y L L H H L H L H H H H L H e High Logic Level L e Low Logic Level C1995 National Semiconductor Corporation TL/F/6513 RRD-B30M105/Printed in U. S. A. DM5438/DM7438 Quad 2-Input NAND Buffers with Open-Collector Outputs June 1989 Absolute Maximum Ratings (Note) 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. If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 7V Input Voltage 5.5V Output Voltage 7V Operating Free Air Temperature Range b 55§ C to a 125§ C DM54 DM74 0§ C to a 70§ C b 65§ C to a 150§ C Storage Temperature Range Recommended Operating Conditions DM5438 Parameter DM7438 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage 0.8 VOH High Level Output Voltage 5.5 IOL Low Level Output Current 48 TA Free Air Operating Temperature 2 Electrical Characteristics V 0.8 125 0 V 5.5 V 48 mA 70 §C et b 55 V 2 e Symbol over recommended operating free air temperature range (unless otherwise noted) Parameter Conditions Typ (Note 1) Min bs ol Symbol Max Units Input Clamp Voltage VCC e Min, II e b12 mA b 1.5 V ICEX High Level Output Current VCC e Min, VO e 5.5V VIL e Max 250 mA VOL Low Level Output Voltage VCC e Min, IOL e Max VIH e Min 0.4 V II Input Current @ Max Input Voltage VCC e Max, VI e 5.5V 1 mA IIH High Level Input Current VCC e Max, VI e 2.4V 40 mA IIL Low Level Input Current VCC e Max, VI e 0.4V b 1.6 mA ICCH Supply Current with Outputs High VCC e Max 5 8.5 mA ICCL Supply Current with Outputs Low VCC e Max 34 54 mA O VI Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) Symbol Parameter Conditions tPLH Propagation Delay Time Low to High Level Output CL e 45 pF RL e 133X tPHL Propagation Delay Time High to Low Level Output Note 1: All typicals are at VCC e 5V, TA e 25§ C. 2 Min Max Units 22 ns 18 ns e Physical Dimensions inches (millimeters) O bs ol et 14-Lead Ceramic Dual-In-Line Package (J) Order Number DM5438J NS Package Number J14A 14-Lead Small Outline Molded Package (M) Order Number DM7438M NS Package Number M14A 3 e bs ol et 14-Lead Molded Dual-In-Line Package (N) Order Number DM7438N NS Package Number N14A 14-Lead Ceramic Flat Package (W) Order Number DM5438W 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: O DM5438/DM7438 Quad 2-Input NAND Buffers with Open-Collector Outputs Physical Dimensions inches (millimeters) (Continued) 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. 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