Logic Families and Their Characteristics - Technical MCQs

Q1:

The problem of interfacing IC logic families that have different supply voltages (VCC's) can be solved by using a:

A level-shifter

B tristate shifter

C decoupling capacitor

D pull-down resistor

ANS:A - level-shifter

Like MAX232 by TEXAS INSTRUMENTS. From CMOS TO TTL logic conversion especially using serial communication interfacing via RS232 standards.