74LS38

DM74LS38 FAIRCHILD | Alldatasheet

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© 2000 Fairchild Semiconductor Corporation DS006363 www.fairchildsemi.com August 1986 Revised March 2000 DM74LS38 Quad 2-Input NAND Buffer with Open-Collector Outputs DM74LS38 Quad 2-Input NAND Buffer with Open-Collector Outputs General Description This device contains four independent gates, each of which performs the logic NAND function. The open-collector out- puts require external pull-up resistors for proper logical operation. Pull-Up Resistor Equations Where: N 1 (IOH ) = total maximum output high current for all outputs tied to pull-up resistor N 2 (IIH) = total maximum input high current for all inputs tied to pull-up resistor N 3 (IIL) = total maximum input low current for all inputs tied to pull-up resistor Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Y = AB H = HIGH Logic Level L = LOW Logic Level Order Number Package Number Package Description DM74LS38M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow DM74LS38SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74LS38N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Inputs Output ABY LLH LHH HLH HHL

www.fairchildsemi.com 2 DM74LS38 Absolute Maximum Ratings(Note 1) 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

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted) Note 2: All typicals are at VCC = 5V, TA = 25°C. Switching Characteristics at VCC = 5V and TA = 25°C Supply Voltage 7V Input Voltage 7V Output Voltage 7V Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Symbol Parameter Min Nom Max Units V CC Supply Voltage 4.75 5 5.25 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V VOH HIGH Level Output Voltage 5.5 V IOL LOW Level Output Current 24 mA TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 2) VI Input Clamp Voltage V CC = Min, II = −18 mA −1.5 V ICEX HIGH Level V CC = Min, VO = 5.5V 250 µA Output Current V IL = Max VOL LOW Level V CC = Min, IOL = Max 0.35 0.5 Output Voltage V IH = Min V IOL = 12 mA, VCC = Min 0.25 0.4 II Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 mA IIH HIGH Level Input Current V CC = Max, VI = 2.7V 20 µA IIL LOW Level Input Current V CC = Max, VI = 0.4V −0.36 mA ICCH Supply Current with Outputs HIGH VCC = Max 0.9 2 mA ICCL Supply Current with Outputs LOW V CC = Max 6 12 mA R L = 667Ω Symbol Parameter C L = 45 pF C L = 150 pF Units Min Max Min Max tPLH Propagation Delay Time 22 48 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time 22 29 ns HIGH-to-LOW Level Output

3 www.fairchildsemi.com DM74LS38 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Package Number M14A

www.fairchildsemi.com 4 DM74LS38 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M14D

5 www.fairchildsemi.com DM74LS38 Quad 2-Input NAND Buffer with Open-Collector Outputs 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 rea- sonably expected to result in a significant injury to the user. 2. A critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com