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Y Operation from a single a5V logic supply Y Input voltage range of g15V Y Each channel can be strobed independently Y High input resistance Y Fan out of two with TTL integrated circuits Y Strobe low forces output to ‘‘1’’ state Connection Diagram Dual-In-Line Package TL/F/5796 2 Top View Order Number DS7820J or DS8820N See NS Package Number J14A or N14A For Complete Military 883 Specifications, See RETS Data Sheet. Order Number: DS7820J/883 or DS7820W/883 See NS Package Number J14A or W14B C1996 National Semiconductor Corporation RRD B30M36/Printed in U S A http:/ /www.national.com

Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 8.0V Input Voltage g20V Differential Input Voltage g20V Strobe Voltage 8.0V Output Sink Current 25 mA Storage Temperature Range b65§Ct o a150§C Lead Temperature (Soldering, 4 sec.) 260 §C Maximum Power Dissipation * at 25 §C Cavity Package 1308 mW Molded Package 1207 mW *Derate cavity package 8.7 mW/ §C above 25 §C; derate molded package 9.7 mW/ §C above 25 §C. Operating Conditions Min Max Units Supply Voltage (V CC) DS7820 4.5 5.5 V DS8820 4.75 5.25 V Temperature (T DS7820 b55 a125 §C DS8820 0 a70 §C Electrical Characteristics (Notes 2 and 3) Symbol Parameter Conditions Min Typ Max Units VTH Input Threshold Voltage VCM 0V b0.5 0 0.5 V b15V s VCM s 15V b1.0 0 1.0 V VOH High Output Level IOUT s 0.2 mA 2.5 5.5 V VOL Low Output Level ISINK s 3.5 mA 0 0.4 V RI Inverting Input Resistance 3.6 5.0 kX RIa Non-Inverting Input Resistance 1.8 2.5 kX RT Line Termination Resistance T A 25§C 120 170 250 X tr Response Time CDELAY 0p F 4 0 n s CDELAY 100 pF 150 ns IST Strobe Current VSTROBE 0.4V b1.0 b1.4 mA VSTROBE 5.5V 5.0 mA ICC Power Supply Current VIN 15V 3.2 6.0 mA VIN 0V 5.8 10.2 mA VIN b15V 8.3 15.0 mA IINa Non-Inverting Input Current V IN 15V 5.0 7.0 mA VIN 0V b1.6 b1.0 mA VIN b15V b9.8 b7.0 mA IIN Inverting Input Current VIN 15V 3.0 4.2 mA VIN 0V 0 b0.5 mA VIN b15V b4.2 b3.0 mA Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. Except for ‘‘Operating Temperature Range’’ they are not meant to imply that the devices should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device operation. Note 2: These specifications apply for 4.5V s VCC s 5.5V, 15V s VCM s 15V and 55 §C s TA s a125§C for the DS7820 or 0 §C s TA s a70§C for the DS8820 unless otherwise specified; typical values given are for V CC 5.0V, T A 25§C and V CM 0 unless stated differently. Note 3: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown as max or min on absolute value basis. Note 4: The specifications and curves given are for one side only. Therefore, the total package dissipation and supply currents will be double the values given when both receivers are operated under identical conditions. http:/ /www.national.com 2

Typical Performance Characteristics (Note 3) Supply Voltage Sensitivity Common Mode Rejection Transfer Function TL/F/5796 4 Response Time Output Voltage Levels Termination Resistance TL/F/5796 5 Positive Supply Current Internal Power Dissipation TL/F/5796 6 http:/ /www.national.com3

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Physical Dimensions inches (millimeters) Ceramic Dual-In-Line Package (J) Order Number DS7820J http:/ /www.national.com5

DS7820/DS8820 Dual Line Receiver Physical Dimensions inches (millimeters) (Continued) Molded Dual-In-Line Package (N) Order Number DS8820N 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: 1. Life support devices or systems are devices or 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd. Japan Ltd.

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