It shouldn't work at all. According to the datasheet the memory uses a 3.3V supply. Is there an additional component on the SIMM which could be a voltage regulator? Might have three pins or a little IC with eight to twelve?
Also, are you sure the chips are HYB3165400AT? Because you list the datasheet for the HYB3164400AT which also won't work, but the one datasheet covers both chips, so that's probably okay.
Anyway, eight 16M X 4 organized, 5V memory chips with 12 X 12 multiplexing should work in the LC575. IIRC, people have successfully used both 64MB and 128MB SIMMs in that machine. So a single bank 64MB SIMM would be fine.
Now if they had used HYB3164400 then the chips would have 13 X 11 multiplexing for the addressing and that would not work. but you'd see half the capacity, not 1/4.
Anyway, I think what you have there is a 3.3V EDO SIMM, which is odd. I'm not sure what ever used such a thing. But if there is a little voltage regulator on there, then it could run on a 5V system (I have a few SIMMs like that) in which case something is defective in the SIMM.
For compatible memory, look for something like an HP D4290 (64MB) or HP D4893 (128MB). There are also some Samsung part numbers for the same SIMMs (pretty sure Samsung manufactured them for HP). Ah, here's the Samsung number for the D4290, KMM53616000BK. I've seen nearly identical SIMMs from Kingston and IBM and the thing they all have in common is that they're made with KM44C16100 memory chips, which are 16M X 4, 5V, 12 X 12 chips. I'm not sure anyone else made 5V 16M X 4 chips. All the Micron chips I've seen in 16M X 4 are 3.3V and SIMMs made with them to run in 5V systems have a voltage regulator on board somewhere to make it work.
On thing I've learned with memory and hard drives. If the seller can't be bothered to post critical information like the operating voltage and speed rating for memory and the type of SCSI connector for SCSI drives, then it's usually not worth wasting your time trying to do business with them.
But again, it could be a 5V SIMM if it is using a voltage regulator, and the seller might not realize that there's anything besides 5V 72 pin SIMMs.
Also, are you sure the chips are HYB3165400AT? Because you list the datasheet for the HYB3164400AT which also won't work, but the one datasheet covers both chips, so that's probably okay.
Anyway, eight 16M X 4 organized, 5V memory chips with 12 X 12 multiplexing should work in the LC575. IIRC, people have successfully used both 64MB and 128MB SIMMs in that machine. So a single bank 64MB SIMM would be fine.
Now if they had used HYB3164400 then the chips would have 13 X 11 multiplexing for the addressing and that would not work. but you'd see half the capacity, not 1/4.
Anyway, I think what you have there is a 3.3V EDO SIMM, which is odd. I'm not sure what ever used such a thing. But if there is a little voltage regulator on there, then it could run on a 5V system (I have a few SIMMs like that) in which case something is defective in the SIMM.
For compatible memory, look for something like an HP D4290 (64MB) or HP D4893 (128MB). There are also some Samsung part numbers for the same SIMMs (pretty sure Samsung manufactured them for HP). Ah, here's the Samsung number for the D4290, KMM53616000BK. I've seen nearly identical SIMMs from Kingston and IBM and the thing they all have in common is that they're made with KM44C16100 memory chips, which are 16M X 4, 5V, 12 X 12 chips. I'm not sure anyone else made 5V 16M X 4 chips. All the Micron chips I've seen in 16M X 4 are 3.3V and SIMMs made with them to run in 5V systems have a voltage regulator on board somewhere to make it work.
On thing I've learned with memory and hard drives. If the seller can't be bothered to post critical information like the operating voltage and speed rating for memory and the type of SCSI connector for SCSI drives, then it's usually not worth wasting your time trying to do business with them.
But again, it could be a 5V SIMM if it is using a voltage regulator, and the seller might not realize that there's anything besides 5V 72 pin SIMMs.