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NTE74LS138 IC TTL 3-to-8 Line Decoder Demultiplexer

Model:

NTE74LS138

 | Catalog #: 55051060
Price:
$2.67
$2.67
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  • Operation from very slow edges
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  • Designed specifically for high−speed memory decoders and data transmission systems
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  • Schottky clamped for high performance
  • Absolute maximum ratings:
    VCC: 7V
  • DC input voltage, VIN: 7V
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  • 1−of−8 data source selection
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Product Summary

The NTE74LS138 is a 3−line−to−8−line decoder/demultiplexer in a 16−lead plastic DIP-type package designed to be used in high−performance memory decoding or data routing applications requiring very short propagation delay times. In high−performance memory systems this device can be used to minimize the effects of system decoding. When employed with high−speed memories utilizing a fast enable circuit the delay times of the decoder and the enable time of the memory are usually less than the typical access time of the memory. This means that the effective system delay introduced by the Schottky−clamped system decoder is negligible. The NTE74LS138 decodes one of eight lines dependent on 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 decode can be implemented without external inverters and a 32−line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications. The NTE74LS138 features fully buffered inputs, each of which represents only one normalized load to its driving circuit. All inputs are clamped with high−performance Schottky diodes to suppress line ringing and to simplify system design.

  • Designed specifically for high speed:
    Memory decodes
    Data transmissions systems
  • 3 enable inputs to simplify cascading and/or data reception
  • Schottky−clamped for high performance
Pricing and availability: Please note that all prices are subject to change without prior notice. Prices advertised on this site are for online orders only. Prices on some items may differ from those advertised in RadioShack stores. All merchandise may not be available at all stores, and all stores may not participate in all sales promotions. We recommend you contact the store to confirm product availability and price.

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