HTL

I would guess no more sensitive than any other bipolar logic familes. I douvt theu're particuarly small-juction devices. Any semiconductor device -- yes, even a bipolar signal transistor -- can be damaged by static. Put it this way, if you discharge a lage leyden jar across the pinsof a 7400 on a 2N3904, I doubt it would still work. But some, of cours,e are more sensitive than others. MOS devices are more delicate thn bipolar (the oxide insualting the gate electrode can be punctured fairly easily), and the smller the active device, the more delicate it is (it will have a smaller capacitance, so for a given charge oyu get a higher voltage across it). But since we've had bipolar devies for years in untreated expanded polystyrene (sytrofoam)m, etc, I wouldn't worry too much about the HTL parts. -tony