DS7820A Datasheet | National Semiconductor

Description The DS7820A and the DS8820A are improved performance digital line receivers with two pletely independent units fabricated on a single silicon chip. Intended for use with digital systems connected by twisted pair lines, they have a differential input designed to reject large mon mode signals while responding to small differential signals. The output is directly patible with TTL or LS integrated circuits. The response time can be controlled with an external capacitor to reject input noise spikes. The output state is a logic “1” for both inputs open. Termination resistors for the twisted pair line are also included in the circuit. Both the DS7820A and the DS8820A are specified, worst case, over their full operating temperature range (- 55˚C to +125˚C and 0˚C to 70˚C respectively), over the entire input voltage range, for ± 10% supply voltage variations. Features n n n n n n n Operation from a single +5V logic supply Input voltage range of ± 15V Strobe low forces output to “1” state High input resistance Fanout of ten with TTL integrated circuits Outputs can be wire OR’ed Series 54/74 patible Connection Diagram Dual-in-Line Package DS005797-2 Note 1: Pin 7 connected to bottom of cavity package. Top View Order Number DS7820AJ or DS8820AN See NS Package Number J14A or N14A For plete Military 883 Specificatons, See RETS Data Sheet. Order Number DS7820AJ/883 See NS Package Number J14A or W14B © 1999 National Semiconductor Corporation DS005797 .national. Absolute Maximum Ratings (Note 3) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 8.0V ± 20V mon-Mode Voltage ± 20V Differential Input Voltage Strobe Voltage 8.0V Output Sink Current 50 m A Storage Temperature Range - 65˚C to 150˚C Maximum Power Dissipation (Note 2) at 25˚C Cavity Package 1308 m W Molded Package 1207 m W Lead Temperature (Soldering, 4 sec.) 260˚C Operating...