SN54S251
Data Selectors/Multiplexers (Texas Instruments)
SN54S257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS (Texas Instruments)
SN54S258
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS (Texas Instruments)
SN54S20
Dual 4-Input Positive-NAND Gate (Texas Instruments)
SN54S240
Octal Buffers and Line Drivers (Texas Instruments)
SN54S241
Octal Buffers and Line Drivers (Texas Instruments)
SN54S244
Octal Buffers and Line Drivers (Texas Instruments)
SN54S260
Dual 5-Input Positive-NOR Gate (Texas Instruments)
SN54S280
9-BIT ODD/EVEN PARITY GENERATORS/CHECKERS (Texas Instruments)
SN54S283
4-Bit Binary Full Adders (Texas Instruments)