DM54S138W/883 from National Semiconductor is a DECODER/DRIVER, S SERIES, TTL
DM54S158W-MIL from National Semiconductor is a MUX, 4-FUNC, 2 LINE INPUT, TTL
DM54LS138W/883 from National Semiconductor is a DECODER/DRIVER
DM54S139W/883 from National Semiconductor is a DECODER/DRIVER, S SERIES, TTL
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