## What is VIL and VIH?

VIL: Maximum input voltage that will be recognised as a low input logic level. VIH: Minimum input voltage that will be recognised as a high input logic level. V. IL.

## How do you test for Vil?

Automated Test Steps

- Step 1: Power the DUT by applying VDD. To power the DUT, the PXIe-4141 SMU should be set to output the rated voltage of the device (usually 3.3V).
- Step 2: Condition the DUT into the appropriate state.
- Step 3: Measure the Current.
- Step 4: Calculate Power and compare.

**What should be the ideal value for VIH Vil?**

Ideally, when input voltage is logic ‘1’, output voltage is supposed to be at logic ‘0’. Hence, Vih (V input high) is ‘Vdd’, and Vol (V output low) is ‘0’V. But due to voltage droop and ground bounce, Vih is usually slightly less than Vdd i.e. Vdd’, whereas Vil is slightly higher that Vss i.e. Vss’.

### What is VIH voltage?

(VIH is minimum voltage interpreted as logic high/1) Low state/Logic 0: VI < VIL. (VIL is maximum voltage interpreted as logic low/0) “Noise Margin”- allow logic level to be correct despite some voltage variation.

### What does v O min mean?

VOH => Min voltage at output which allows a 1(high) VOL => Max voltage at output which can be ‘read’ as a 0(low) IIH. => Input current when input = 1. IIL.

**What is the function of a CMOS inverter?**

Today’s computers CPUs and cell phones make use of CMOS due to several key advantages. CMOS offers low power dissipation, relatively high speed, high noise margins in both states, and will operate over a wide range of source and input voltages (provided the source voltage is fixed).

## How do you calculate VOH and volume?

Remember, for hand calculations we assume VOH=VMAX, and VOL=VMIN. b) Calculate the voltage gain of this circuit, when Vin=VM. a) Set the current through the resistor equal to the current through the NMOS, with Vin=Vout=VM. When the input is 1.5V (high), the NMOS is in triode.

## What is high level output current?

High-level Output Current IOH The current flowing into the output at a specified high- level voltage. The reference points on both the input and output waveforms are the same value which is midway between the maximum low-level input voltage (VILmax) and the minimum high-level input voltage (VIHmin).

**What is CMOS and how it works?**

Complementary metal–oxide–semiconductor (CMOS, pronounced “see-moss”), also known as complementary-symmetry metal–oxide–semiconductor (COS-MOS), is a type of metal–oxide–semiconductor field-effect transistor (MOSFET) fabrication process that uses complementary and symmetrical pairs of p-type and n-type MOSFETs for …