Hi Ed,
I don't see how the die mounting is important. From the datasheets the devices operate similarly. You can review the electrical specs to see if they will be a good replacement for you.
Part Number: SN74HCS139 Other Parts Discussed in Thread: SN74AHC139 , SN74LVC139A , SN74LV139A Tool/software: Dear Support,
i am using SN74HCS139PWR: i am not supplying Vcc on pin 16 and channel enable signal is high (in my case i have 3.3V on pin 1…