74ls155.pdf part of datasheets 74ls155 74ls155.pdf, . Electronic Components Datasheets Various datasheets 74ls155.pdf text manual preview

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SN54/74LS155
DUAL 1-OF-4 DECODER/ SN54/74LS156
DEMULTIPLEXER
The SN54 / 74LS155 and SN54 / 74LS156 are high speed Dual 1-of-4
Decoder/Demultiplexers. These devices have two decoders with common
2-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" has
two active LOW Enable inputs. If the Enable functions are satisfied, one DEMULTIPLEXER
output of each decoder will be LOW as selected by the address inputs. The LS156-OPEN-COLLECTOR
LS156 has open collector outputs for wired-OR (DOT-AND) decoding and LOW POWER SCHOTTKY
function generator applications.
The LS155 and LS156 are fabricated with the Schottky barrier diode
process for high speed and are completely compatible with all Motorola TTL
families.