Design and Implementation of ALU Using Graphene Nanoribbon Field-Effect Transistor and Fin Field-Effect Transistor

Table 8

Performance comparison of DCHS with existing 4-bit subtractors.

Method	PTLS [15]	MTCMOSS [16]	TUTS [17]	DCHS
APC (nw)	19.21508	15.52046	4.1818	2.24344
SRD (ns)	78.10905	77.78904	76.349	16.5576
SFD (ns)	156.706	156.4315	155.143	20.828
CORD (ps)	99.79328	99.06384	19.8592	2.0572
COFD (ps)	92.99294	85.25137	18.9658	16.4584
PD (ns)	94.03612	79.61973	78.7914	2.02376
TC (nA)	63.22517	55.53615	53.6843	2.64784
SPC (nw)	46.11293	38.98629	24.7857	2.27424
TEC (nJ)	59.11202	47.11611	9.42237	0.05296
SNM	54.18627	53.80665	35.8243	5.92344