Revised March 2000 DM74LS266 Quad 2-Input Exclusive-NOR Gate with Open-Collector Outputs General Description This device contains four independent gates each of which performs the logic exclusive-NOR function. Outputs are open collector. Ordering Code: Order Number Package Number Package Description DM74LS266M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow DM74LS266N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Truth Table Inputs Outputs A B Y L L H L H L H L L H H H H = HIGH Voltage Level L = LOW Voltage Level © 2000 Fairchild Semiconductor Corporation DS010182 www.fairchildsemi.com DM74LS266 Quad 2-Input Exclusive-NOR Gate March 1989 DM74LS266 Absolute Maximum Ratings(Note 1) Supply Voltage 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” table are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. 7V Input Voltage 7V 0°C to +70°C Operating Free Air Temperature Range −65°C to +150°C Storage Temperature Range Recommended Operating Conditions Symbol Parameter Min Nom Max Units 4.75 5 5.25 V VCC Supply Voltage VIH HIGH Level Input Voltage VIL LOW Level Input Voltage 0.8 VOH HIGH Level Output Voltage 5.5 V IOL LOW Level Output Current 8 mA TA Free Air Operating Temperature 70 °C 2 V 0 V Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions VI Input Clamp Voltage VCC = Min, II = −18 mA ICEX HIGH Level VCC = Min, VO = 5.5V, VOL Output Current VIL = Max LOW Level VCC = Min, IOL = Max, Output Voltage VIH = Min Min Typ (Note 2) Max Units −1.5 V 100 µA 0.5 IOL = 4 mA, VCC = Min 0.4 V II Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.2 IIH HIGH Level Input Current VCC = Max, VI = 2.7V 40 µA IIL LOW Level Input Current VCC = Max, VI = 0.4V −0.8 mA IOS Short Circuit Output Current VCC = Max (Note 3) ICC Supply Current VCC = Max −20 mA −100 mA 13 mA Note 2: All typicals are at VCC = 5V, TA = 25°C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Switching Characteristics VCC = 5V, TA = 25°C RL = 2 kΩ Symbol CL = 15 pF Parameter Min tPLH Propagation Delay Time LOW-to-HIGH Level Output tPHL Propagation Delay Time HIGH-to-LOW Level Output www.fairchildsemi.com 2 Units Max 23 ns 23 ns DM74LS266 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Package Number M14A 3 www.fairchildsemi.com DM74LS266 Quad 2-Input Exclusive-NOR Gate 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: 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. 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. www.fairchildsemi.com www.fairchildsemi.com 4