Text preview for : 74ls155.pdf part of datasheets 74ls155 . Electronic Components Datasheets Various datasheets 74ls155.pdf
Back to : 74ls155.pdf | Home SN54/74LS155DUAL 1-OF-4 DECODER/ SN54/74LS156DEMULTIPLEXER The SN54 / 74LS155 and SN54 / 74LS156 are high speed Dual 1-of-4Decoder/Demultiplexers. These devices have two decoders with common2-bit Address inputs and separate gated Enable inputs. Decoder "a" has an DUAL 1-OF-4 DECODER /Enable gate with one active HIGH and one active LOW input. Decoder "b" hastwo active LOW Enable inputs. If the Enable functions are satisfied, one DEMULTIPLEXERoutput of each decoder will be LOW as selected by the address inputs. The LS156-OPEN-COLLECTORLS156 has open collector outputs for wired-OR (DOT-AND) decoding and LOW POWER SCHOTTKYfunction generator applications. The LS155 and LS156 are fabricated with the Schottky barrier diodeprocess for high speed and are completely compatible with all Motorola TTLfamilies.