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NTE NTE74HC138 IC High-Speed CMOS Decoder

Model:

NTE74HC138

 | Catalog #: 55050982
Price:
$1.20
$1.20
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  • High-speed: tPD = 8ns (typ) at VCC = 5V
  • Low-power dissipation: ICC = 4μA (max) at +25°C
  • Output drive capability: 15 LS−TTL loads
  • Balanced propagation delays: tPLH = tPHL
  • Symmetrical output impedance: IOL = |IOH| = 6mA (min)
  • High-noise immunity: VNIH = VNIL = 28% VCC (min)
  • Wide operating voltage range: VCC (opr) = 2V to 6V

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  • Propagation delay: 12ns (typ)
  • Wide power supply range: 2V to 6V
  • Low quiescent current: 20μA (max)
  • Low-input current: 1μA (max)
  • Fanout of 10 LS−TTL loads
  • Hysteresis voltage: 0.9V (typ) at VCC= 4.5V

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  • Typical propagation delays -- select to output (4 Delays): 18ns, select to output (5 Delays): 28ns
  • Enable to output: 20ns
  • Low-power: 40μW quiescent supply power
  • Fanout of 10 LS−TTL loads
  • Wide power supply range: 2V to 6V
  • Input current: 1μA (max), 10pA (typ)

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  • Output drive capability: 10 LSTTL loads
  • Outputs directly interface to CMOS, NMOS and TTL
  • Operating voltage range: 2V to 6V
  • Low-input current: 1.0μA
  • High-noise immunity characteristics of CMOS devices

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  • Typical propagation delay data select to output Y: 26ns
  • Wide-operating supply voltage range: 2V to 6V
  • Low-input current: 1μA (max)
  • Low quiescent supply current: 80μA (max)
  • High-output drive current: 4mA (max)

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  • Wide operating supply voltage range: 2V to 6V
  • Outputs can drive up to 15 LS−TTL loads
  • Low-power consumption: 80μA (max)
  • Typical propagation delay: 9ns
  • Low-input current: 1μA (max)
  • Permit multiplexing from n lines to one line
  • Perform parallel−to−serial conversion
  • Strobe (enable) line provided for cascading (N lines to n lines)

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Product Summary

The NTE74HC138 is a 1−of−8 decoder/demultiplexer in a 16−lead plastic DIP-type package that decodes a three−bit address to one−of−eight active−low outputs. This device features three chip select inputs, two active−low and one active−high to facilitate the demultiplexing, cascading and chip−selecting functions. The demultiplexing function is accomplished by using the address inputs to select the desired device output; one of the Chip Selects is used as a data input while the other Chip Selects are held in their active states. The NTE74HC138 is identical in pinout to the 'LS138. The device inputs are compatible with standard CMOS outputs; with pull-up resistors, they are compatible with LSTTL outputs.

  • Output drive capability: 10 LSTTL loads
  • Outputs directly interface to CMOS, NMOS and TTL
  • Operating voltage range: 2V to 6V
  • Low-input current: 1.0μA
  • High-noise immunity characteristics of CMOS devices
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