texasmame
Well-known member
Poking around online for chips for the trackball input for Centipede as it's hosed.
SN74LS257N is the actual part number on the chip. I've also found SN74LS257BN and SN74LS257B and NTE74HC257 (NTE equiv. for LS257) online.
Should any one of these work in place of the original NTE74HC257N? I'm trying to interpret the data sheets but not sure that the differences I see will make a difference but they all do appear to be a Quad 2 input multiplexer with 3 output states.
TIA!
SN74LS257N is the actual part number on the chip. I've also found SN74LS257BN and SN74LS257B and NTE74HC257 (NTE equiv. for LS257) online.
Should any one of these work in place of the original NTE74HC257N? I'm trying to interpret the data sheets but not sure that the differences I see will make a difference but they all do appear to be a Quad 2 input multiplexer with 3 output states.
TIA!

