Thank you for contacting Cypress Technical Support, an Infineon Technologies Company. Since this device have been obsoleted during AMD banner, unfortunately we don't have the requested information. But from the datasheet I found on the web, mentions that Am29F040B is compatible with TTL logic. Please refer to DC CHARACTERISTICS.
Have a wonderful day
Thank you Bushra.
Datasheet's DC characteristics have both TTL/NMOS & CMOS characteristics. I’m getting confused whether the same part number can work in both TTL and CMOS logic. In that case is it possible to input few signals in 3.3V and few in 5V?
could you please help again?
Same part number can work please refer to Device bus operations on page 7 for information on how both can work. This is 5V device. 3.3 V will not work.