LT1638/LT1639 ABSOLUTE MAXIMUM RATINGS(Note 1) Total Supply Voltage (V + to V–) ..44V Specifi ed Temperature Range (Note 4) Input Differential Voltage...44V LT1638C/LT1639C ..–40°C to 85°C Input Current ..±25mA LT1638I/LT1639I ..–40°C to 85°C Output Short-Circuit Duration (Note 2) ... Continuous LT1638H/LT1639H ...–40°C to 125°C Operating Temperature Range (Note 3) Junction Temperature .. 150°C LT1638C/LT1639C ..–40°C to 85°C DD Package .. 125°C LT1638I/LT1639I ..–40°C to 85°C Storage Temperature Range ...–65°C to 150°C LT1638H/LT1639H ...–40°C to 125°C DD Package ...–65°C to 125°C Lead Temperature (Soldering, 10 sec) .. 300°C PIN CONFIGURATION TOP VIEW TOP VIEW OUT A 1 8 V+ OUT A 1 8 V+ –IN A 2 7 OUT B –IN A 2 7 OUT B A A +IN A 3 6 –IN B +IN A 3 6 –IN B B V– 4 5 +IN B B V– 4 5 +IN B MS8 PACKAGE 8-LEAD PLASTIC MSOP N8 PACKAGE S8 PACKAGE 8-LEAD PDIP 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 273°C/W TJMAX = 150°C, θJA = 150°C/W (N8) TJMAX = 150°C, θJA = 190°C/W (S8) TOP VIEW TOP VIEW OUT A 1 14 OUT D –IN A 2 13 –IN D A D OUT A 1 8 V+ +IN A 3 12 +IN D –IN A 2 7 OUT B A V+ 4 11 V– +IN A 3 6 –IN B B +IN B 5 10 +IN C V– 4 5 +IN B B C –IN B 6 9 –IN C OUT B 7 8 OUT C DD PACKAGE 8-LEAD (3mm s 3mm) PLASTIC DFN T N PACKAGE S PACKAGE JMAX = 125°C, θJA = 43°C/W UNDERSIDE METAL INTERNALLY CONNECTED TO V– 14-LEAD PDIP 14-LEAD PLASTIC SO TJMAX = 150°C, θJA = 130°C/W (N) TJMAX = 150°C, θJA = 160°C/W (S) 16389fg 2