DS9638 Datasheet | National Semiconductor

Description The DS9638 is a Schottky, TTL patible, dual differential line driver designed specifically to meet the EIA Standard RS-422 specifications. It is designed to provide unipolar differential drive to twisted pair or parallel wire transmission lines. The inputs are TTL patible. The outputs are similar to totem pole TTL outputs, with active pull-up and pull-down. The device features a short circuit protected active pull-up with low output impedance and is specified to drive 50Ω transmission lines at high speed. The mini-DIP provides high package density. Features Single 5V supply Schottky technology TTL and CMOS patible inputs Output short circuit protection Input clamp diodes plementary outputs Minimum output skew ( < 1.0 ns typical) 50 m A output drive capability for 50Ω transmission lines Meets EIA RS-422 specifications Propagation delay of less than 10 ns “Glitchless” differential output Delay time stable with VCC and temperature variations ( < 2.0 ns typical) (Figure 3) n Extended temperature range n n n n n n n n n n n n Connection Diagram 8-Lead DIP DS009622-1 Top View Order Number DS9638CM or DS9638CN See NS Package Number M08A or N08E For plete Military Product Specifications, refer to the appropriate SMD or MDS. Order Number DS9638MJ/883 See NS Package Number J08A © 1998 National Semiconductor Corporation DS009622 .national. Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Ceramic DIP Molded DIP and SO-8 Lead Temperature - 65˚C to +175˚C - 65˚C to +150˚C Ceramic DIP (Soldering, 60 sec.) 300˚C Molded DIP (Soldering, 10 sec.) 265˚C Maximum Power Dissipation (Note 1) at 25˚C Cavity Package 1300 m W Molded Package 930 m W SO Package 810 m W - 5V to 7V VCC Lead Potential to Ground Input Voltage - 0.5V to +7V Remended Operating Conditions DS9638M Min Supply Voltage (VCC) Output Current...