FPGA-Based Synthesis of High-Speed Hybrid Carry Select Adders

Figure 5

Hybrid CSLAs without/with BEC logic comprising a SCBCLA: (a) CSLA-SCBCLA type and (b) CSLA_BEC-SCBCLA type.

(a) 8-bit hybrid CSLA with 4-bit SCBCLA in the least significant stage

(b) 8-bit hybrid CSLA incorporating BEC with a least significant SCBCLA stage