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| DM7426 Quad 2-Input NAND Gates with High Voltage Open-Collector Outputs August 1986 Revised February 2000 DM7426 Quad 2-Input NAND Gates with High Voltage Open-Collector Outputs General Description 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. Pull-Up Resistor Equations Where: N1 (IOH) = total maximum output high current for all outputs tied to pull-up resistor N2 (IIH) = total maximum input high current for all inputs tied to pull-up resistor N3 (IIL) = total maximum input low current for all inputs tied to pull-up resistor Ordering Code: Order Number DM7426N Package Number N14A Package Description 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Connection Diagram Function Table Y = AB Inputs A L L H H H = HIGH Logic Level L = LOW Logic Level Output B L H L H Y H H H L (c) 2000 Fairchild Semiconductor Corporation DS006508 www.fairchildsemi.com DM7426 Absolute Maximum Ratings(Note 1) Supply Voltage Input Voltage Output Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 5.5V 15V 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 VOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Current Free Air Operating Temperature 0 Min 4.75 2 0.8 15 16 70 Nom 5 Max 5.25 Units V V V V mA C Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI ICEX VOL II IIH IIL ICCH ICCL Parameter Input Clamp Voltage HIGH Level Output Current LOW Level Output Voltage Input Current @ Max Input Voltage High Level Input Current Low Level Input Current Conditions VCC = Min, II = -12 mA VCC = Min VIL = Max VCC = Min, IOL = Max VIH = Min VCC = Max, VI = 5.5V VCC = Max, VI = 2.4V VCC = Max, VI = 0.4V 4 12 VO = 15V VO = 12V Min Typ (Note 2) Max -1.5 1000 50 0.4 1 40 -1.6 8 22 Units V A V mA A mA mA mA Supply Current with Outputs HIGH VCC = Max Supply Current with Outputs LOW VCC = Max Note 2: All typicals are at VCC = 5V, TA = 25C. Switching Characteristics at VCC = 5V and TA = 25C Symbol tPLH tPHL Parameter Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output CL = 15 pF RL = 1 k (tPLH) Conditions Min Max 24 17 Units ns ns www.fairchildsemi.com 2 DM7426 Quad 2-Input NAND Gates with High Voltage Open-Collector Outputs 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: 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. 3 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 www.fairchildsemi.com |
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