hola, quisiera saber para una implementacon digital que se a de conectar a 12v, cual de estas familias de CI me puede servir: 74F, 74ALS, 74LS o 74HC?
Muchas gracias!

Hace ya mucho rato que no le entro a la electronica digital, pero creo que para esas familias de CI lo que vas a conseguir son palomitas de maíz , por que no revisas los Datasheet y lo compruebas.

Encontré esto interesante espero lo puedas leer:

There was a time, when all IC’s were only TTL type. They were marked as 74LS or 74ALS. But then there came CMOS types of semiconductor. They are usually marked CDxx. And lately there appeared combined semiconductors who are compliant to both types. They usually are marked as 74HC or 74HCT. (Esto no quiere decir que el 74HC soporte tu voltage)
TTL are faster than CMOS, but they sink more power. They are powered from 5V source. To diminish the power consumption, the CMOS were developed. They can work with supplied voltages in range 3 to 15V. The main disadvantage is that they are static sensitive. So you always have to be grounded when working with CMOS.
Now both types of semiconductors are widely used. Sometimes there is as dilemma to connect TTL to CMOS. You cannot connect directly TTL to CMOS as there are different supply voltages. So you need some compliance circuit. The simplest can be bipolar transistor cascade.


Encuentra un sustituto para los TTL que estas buscando en CMOS en un manual de semiconductores o cambia el diseño de tu proyecto.

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