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74HC138 - 3-of-8 Decoder De-Multiplexer

74HC138 - 3-of-8 Decoder De-Multiplexer

74HC138 - 3-of-8 Decoder De-Multiplexer

These Schottky-clamped circuits are designed to be used in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times. In high-performance memory systems these decoders can be used to minimize the effects of system decoding. When used with high-speed memories, the delay times of these decoders are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoder is negligible. The LS138 decodes three-of-eight lines, based upon the conditions at the three binary select inputs and the three enable inputs. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented with no external inverters, and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications. All of these decoders/demultiplexers feature fully buffered inputs, presenting only one normalized load to its driving circuit. All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and simplify system design.

Features:

  • Demultiplexing Capability
  • Multiple Input Enable for Easy Expansion
  • Typical Power Dissipation of 32 mW
  • Active Low Mutually Exclusive Outputs
  • Input Clamp Diodes Limit High Speed Termination Effects

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  • Views: 961
  • Product Code: 74LS138 - 1-of-8 Decoder De-Multiplexer
  • Availability: In Stock
  • Rs12.50

Tags: 74138, 74LS138, 74LS138, 74HC138, 74AL138, 74ALS138, Decoder, Demultiplexer

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