DM7426 FAIRCHILD | Alldatasheet

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© 2000 Fairchild Semiconductor Corporation DS006508 www.fairchildsemi.com August 1986 Revised February 2000 DM7426 Quad 2-Input NAND Gates with High Voltage Open-Collector Outputs 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 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: Connection Diagram Function Table Y = AB H = HIGH Logic Level L = LOW Logic Level Order Number Package Number Package Description DM7426N 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 DM7426 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 5.5V Output Voltage 15V 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 15 V IOL LOW Level Output Current 16 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 = −12 mA −1.5 V ICEX HIGH Level V CC = Min V O = 15V 1000 µA Output Current V IL = Max V O = 12V 50 VOL LOW Level V CC = Min, IOL = Max 0.4 V Output Voltage V IH = Min II Input Current @ Max V CC = Max, 1m A Input Voltage V I = 5.5V IIH High Level Input Current V CC = Max, VI = 2.4V 40 µA IIL Low Level Input Current V CC = Max, VI = 0.4V −1.6 mA ICCH Supply Current with Outputs HIGH VCC = Max 4 8 mA ICCL Supply Current with Outputs LOW VCC = Max 12 22 mA Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time C L = 15 pF 24 ns LOW-to-HIGH Level Output R L = 1 kΩ (tPLH ) tPHL Propagation Delay Time 17 ns HIGH-to-LOW Level Output

3 www.fairchildsemi.com 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 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