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## Credits

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat
Shobhit Dimri has created this Calculator and 500+ more calculators!
Vishwakarma Government Engineering College (VGEC), Ahmedabad
Urvi Rathod has verified this Calculator and 1000+ more calculators!

## Critical Path Delay Solution

STEP 0: Pre-Calculation Summary
Formula Used
critical_path_delay = propagation delay+(n-input AND gate+(K-input AND gate-2))*Delay of the AND-OR gate+Multiplexer Delay
tselect = τ+(n+(k-2))*tAO+tmux
This formula uses 5 Variables
Variables Used
propagation delay- propagation delay is the amount of time it takes for the head of the signal to travel from the sender to the receiver.
n-input AND gate- n-input AND gate is n number of and gate
K-input AND gate- K-input AND gate is the k input
Delay of the AND-OR gate - Delay of the AND-OR gate in the gray cell (Measured in Second)
Multiplexer Delay- Multiplexer Delay exhibits minimum number of pmos and nmos, minimum delay and minimum power dissipation.
STEP 1: Convert Input(s) to Base Unit
propagation delay: 20 --> No Conversion Required
n-input AND gate: 2 --> No Conversion Required
K-input AND gate: 7 --> No Conversion Required
Delay of the AND-OR gate: 5 Second --> 5 Second No Conversion Required
Multiplexer Delay: 4 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
tselect = τ+(n+(k-2))*tAO+tmux --> 20+(2+(7-2))*5+4
Evaluating ... ...
tselect = 59
STEP 3: Convert Result to Output's Unit
59 --> No Conversion Required
59 <-- Critical Path Delay
(Calculation completed in 00.000 seconds)

## < 10+ CMOS-VLSI Design Calculators

Drain Voltage
drain_voltage = sqrt(dynamic power/frequency*Capacitance) Go
Gate to Channel Voltage
gate_to_channel_voltage = (Channel Charge/Gate Capacitance)+Threshold voltage Go
Threshold Voltage
threshold_voltage = Gate to Channel Voltage-(Channel Charge/Gate Capacitance) Go
Gate Capacitance
channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage) Go
Channel Charge
channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage) Go
Capacitor dynamic power
dynamic_power = Drain Voltage^2*frequency*Capacitance Go
Potential gate to Collector
potential_gate_to_collector = (Potential Gate to Source+Potential Gate to Drain)/2 Go
Potential Gate to Drain
potential_gate_to_drain = 2*potential gate to collector-Potential Gate to Source Go
Static Current
static_current = Static power/Drain Voltage Go
Static Power Dissipation
static_power = static current*Drain Voltage Go

### Critical Path Delay Formula

critical_path_delay = propagation delay+(n-input AND gate+(K-input AND gate-2))*Delay of the AND-OR gate+Multiplexer Delay
tselect = τ+(n+(k-2))*tAO+tmux

## Why is the substrate in NMOS connected to Ground and in PMOS to VDD?

we try to reverse bias not the channel and the substrate but we try to maintain the drain,source junctions reverse biased with respect to the substrate so that we dont loose our current into the substrate.

## How to Calculate Critical Path Delay?

Critical Path Delay calculator uses critical_path_delay = propagation delay+(n-input AND gate+(K-input AND gate-2))*Delay of the AND-OR gate+Multiplexer Delay to calculate the Critical Path Delay, The Critical Path Delay formula is defined as the critical path of the carry-skip and carry-lookahead adders involves calculating the carry into each n-bit group, and then calculating the sums for each bit within the group based on the carry-in. Critical Path Delay and is denoted by tselect symbol.

How to calculate Critical Path Delay using this online calculator? To use this online calculator for Critical Path Delay, enter propagation delay (τ), n-input AND gate (n), K-input AND gate (k), Delay of the AND-OR gate (tAO) and Multiplexer Delay (tmux) and hit the calculate button. Here is how the Critical Path Delay calculation can be explained with given input values -> 59 = 20+(2+(7-2))*5+4.

### FAQ

What is Critical Path Delay?
The Critical Path Delay formula is defined as the critical path of the carry-skip and carry-lookahead adders involves calculating the carry into each n-bit group, and then calculating the sums for each bit within the group based on the carry-in and is represented as tselect = τ+(n+(k-2))*tAO+tmux or critical_path_delay = propagation delay+(n-input AND gate+(K-input AND gate-2))*Delay of the AND-OR gate+Multiplexer Delay. propagation delay is the amount of time it takes for the head of the signal to travel from the sender to the receiver, n-input AND gate is n number of and gate, K-input AND gate is the k input, Delay of the AND-OR gate in the gray cell and Multiplexer Delay exhibits minimum number of pmos and nmos, minimum delay and minimum power dissipation.
How to calculate Critical Path Delay?
The Critical Path Delay formula is defined as the critical path of the carry-skip and carry-lookahead adders involves calculating the carry into each n-bit group, and then calculating the sums for each bit within the group based on the carry-in is calculated using critical_path_delay = propagation delay+(n-input AND gate+(K-input AND gate-2))*Delay of the AND-OR gate+Multiplexer Delay. To calculate Critical Path Delay, you need propagation delay (τ), n-input AND gate (n), K-input AND gate (k), Delay of the AND-OR gate (tAO) and Multiplexer Delay (tmux). With our tool, you need to enter the respective value for propagation delay, n-input AND gate, K-input AND gate, Delay of the AND-OR gate and Multiplexer Delay and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Critical Path Delay?
In this formula, Critical Path Delay uses propagation delay, n-input AND gate, K-input AND gate, Delay of the AND-OR gate and Multiplexer Delay. We can use 10 other way(s) to calculate the same, which is/are as follows -
• dynamic_power = Drain Voltage^2*frequency*Capacitance
• drain_voltage = sqrt(dynamic power/frequency*Capacitance)
• static_power = static current*Drain Voltage
• static_current = Static power/Drain Voltage
• channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage)
• channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage)
• gate_to_channel_voltage = (Channel Charge/Gate Capacitance)+Threshold voltage
• threshold_voltage = Gate to Channel Voltage-(Channel Charge/Gate Capacitance)
• potential_gate_to_collector = (Potential Gate to Source+Potential Gate to Drain)/2
• potential_gate_to_drain = 2*potential gate to collector-Potential Gate to Source
Where is the Critical Path Delay calculator used?
Among many, Critical Path Delay calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
{FormulaExamplesList}
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