SN5451, SN54LS51, SN54S51 SN7451, SN74LS51, SN74S5.
Texas Instruments
SN54S51 - AND-OR-INVERT GATE
SN5451, SN54LS51, SN54S51 SN7451, SN74LS51, SN74S51 AND-OR-INVERT GATES SDLS113 – DECEMBER 1983 – REVISED MARCH 1988 PRODUCTION DATA information is c.