On May 14, 1992, Texas Instruments licensed Cyrix‘s 486SLC and 486DLC technologies. The agreement allowed Cyrix to use Texas Instruments’ manufacturing facilities, and for TI to create derivative chips from Cyrix’s technology. In the end, TI didn’t make as many chips for Cyrix as SGS-Thomson or IBM did, but TI did end up making interesting derivatives of Cyrix’s CPUs, including the 486SXL-40, the fastest 386-class CPU ever made. But without the burst transfer feature that Intel and AMD 486s have, none of TI’s 486s ended up performing quite up to par with an Intel or AMD 486.
Texas Instruments 486SXL CPU










