No good engineer wants that - we want one manufacturer's chip that we've tested and qualified, maybe a spare just in case. We've all been bitten by someone sub

No good engineer wants that - we want one manufacturer's chip that we've tested and qualified, maybe a spare just in case. We've all been bitten by someone substituting in a 'equivalent' that 'ought to be the same'. Mixing in random chips into random boards would be a nightmare to track down when something goes wrong