54LS258A
TRI-STATE Quad 2-Data Selectors/Multiplexers (National Semiconductor)
54LS258B
Quad 2-Data Selectors/Multiplexers (National Semiconductor)
54LS258B
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS (Texas Instruments)
54LS256
Dual 4-Bit Addressable Latch (National Semiconductor)
54LS256
DUAL 4-BIT ADDRESSABLE LATCH (Motorola)
54LS257A
TRI-STATE Quad 2-Data Selectors/Multiplexers (National Semiconductor)
54LS257B
Quad 2-Data Selectors/Multiplexers (National Semiconductor)
54LS257B
QUAD 2-INPUT MULTIPLEXER (Motorola)
54LS257B
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS (Texas Instruments)
54LS20
Dual 4-Input NAND Gates (National Semiconductor)