Majlesi Journal of Electrical Engineering New Multiply-Accumulate Circuits Based on Variable Latency Speculative Architectures with Asynchronous Data Paths Volume 16 (2022) Issue 2, June 2022 2024 02 11 New Multiply-Accumulate Circuits Based on Variable Latency Speculative Architectures with Asynchronous Data Paths 10.30486/mjee.2022.696494 EN Hoda Ghabeli Department of Computer Engineering, Kerman Branch, Islamic Azad University, Kerman, Iran. Amir Sabbagh Department of Computer Engineering, Kerman Branch, Islamic Azad University, Kerman, Iran 0000-0003-3603-9401 Azadeh Emrani Department of Computer Engineering, Shahid Bahonar University of Kerman, Kerman, Iran 0000-0001-9249-9029 Journal Article 2024 02 11 In this paper, variable latency speculative Multiply-Accumulator (MAC) architectures are introduced. The proposed architectures use the idea of integrating the results vectors of multiplier in parallel with the accumulator to create asynchronous data paths design. The proposed variable latency speculative MACs consist of two short and long data paths and a circuit is used to select a suitable path with minimum overhead. In order to investigate variable latency speculative MACs performances, proposed architectures have been synthesized using the Faraday’s 90 nm technology library, for operand lengths 8, 16 and 32 bits. Obtained results show that the proposed MAC architectures provide a variety of trade-offs in the power-delay-area space that outperform the existing designs that use only the integration technique.