ADVANCE INFORMATION All information in this data sheet is preliminary and subject to change. 7/94 General Description The MAX366/MAX367 are multiple, two-terminal circuit protectors. Placed in series with signal lines, each two- terminal device protects sensitive circuit components from damaging voltages near and beyond the normal supply range. They are used at interfaces where sensi- tive circuits are connected to the external world and potentially damaging voltages (up to 35V beyond the supply rails) may be encountered during power-up, power-down, or fault conditions. The MAX366 contains three protectors; the MAX367 contains eight protectors. They can be used to protect either analog or digital signals using unipolar (5V to 44V) or bipolar (5V to +22V) power supplies. These devices are essentially fault-protected switches that are always on when power is applied. On-resistance is 1002 max, and leakage is less than 1nA at +25C. When signal voltages exceed or are within 1.5V of the power-supply voltages, or when power is off, the two- terminal resistance increases dramatically, becoming a virtual open circuit. This ensures tow current during fault conditions. The protected side of the switch maintains the correct polarity and clamps approximately 1.5V below the supply rail. There are no glitches or polarity reversals going into or coming out of a fault condition. ESD protection is greater than 2kV. Applications Process Control Systems ATE Equipment Data-Acquisition Systems Digital Data Lines Redundant/Backup Systems Typical Operating Circuit MAKIM Signal Line Circuit Protectors Features @ +35V Overvoltage Protection @ All Switches Off with Power Off @ 1000 Max On-Resistance @ 1nA Max On-Leakage at +25C @ ESD Protection Greater than 2kV per Method 3015.7 @ 44V Maximum Supply Voltage Rating Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX366CPA OC to +70C 8 Plastic DIP MAX366CSA OC to +70C 8S0 MAX366C/D OC to +70C Dice* MAX366EPA ~40C to +85C 8 Plastic DIP MAX366ESA -40C to +85C 8SO MAX366MJA -58C to +125C 8 CERDIP** MAX367CPN OC to +70C 18 Plastic DIP MAX367CWN QC to +70C 18 Wide SO MAX367C/D 0C to +70C Dice* MAX367EPN -40C to +85C 18 Plastic DIP MAX367EWN -40C to +85C 18 Wide SO MAX367MJN -55C to +125C 18 CERDIP** * Dice are tested at +25C only. Contact factory for availability Pin Configurations REMOTE pe ee 15V ELECTRONICS SENSOR | MAMUM pV 1. MAXS66 t v my YY AD pt ps] CONVERTER TOP VIEW MAAXLAN MAX366 DIP/SO V+ OuTt OUT2 OUT3 Pin Configurations continued on next page MAAKXLAA Call toll free 1-800-998-8800 for free samples or literature. Z9OEXVIN/99EXUN Maxim Integrated Products 1-109Signal Line Circuit Protectors Pin Configurations (continued) TOP VIEW MAX366/MAX367 MAXIM MAX367 nt [7] 2 [2] Ina 3 | IIN4 [a] ins [5] 18| V+ liz] oui 6] oure 15] ours ya] ours Ne [| IN? [7] NB [a vf) i f13] outs [12] ours 11] OUT7 10| OUTS DIP/SO 1-110 MAAXKUM