Question

What are the non saturated logic families?

Answer 1

Digital Logic Families Part-III. Emitter coupled logic (ECL) is a non saturated logic, which means that transistors are prevented from going into deep saturation, thus eliminating storage delays. ... In other words, the transistor is switched on, but not completely on.

Answer 2

In Unsaturated bipolar logic family the transistors used in IC is not  driven into saturation.

Schottky TTL

Emitter Coupled Logic(ECL)

Explanation:

• There are two types of logical families bipolar logical family and unipolar logical family
• this bipolar logical family is divided into two types saturated and non saturated bipolar logical family
• Saturated Bipolar Logic Families are Diode logic (DL), Resistor Transistor Logic (RTL), Diode Transistor Logic (DTL), Integrated Injection Logic (IIL or I2L), Transistor Transistor Logic (TTL).
• Non-saturated Bipolar Logic Families are Schottky TTL and Emitter Coupled Logic (ECL).
• Unipolar logic family consists of Metal Oxide Semiconductor (MOS) logic families. They are P-type MOS (PMOS) Logic, N-type MOS (NMOS) logic, Complementary MOS (CMOS) logic, Bipolar MOS (BiMOS) logic, Bipolar CMOS (BiCMOS) logic.