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NTE74LS290 IC TTL Decade Counter (Divide by 2 & 5)

Model:

NTE74LS290

 | Catalog #: 55051115
Price:
$1.99
$1.99
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  • Absolute maximum ratings:
    VCC: 7V
  • VIN: 7V
  • TA: 0°C to +70°C
  • Tstg: −65°C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND

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  • Absolute Maximum Ratings:
  • Supply voltage, VCC: 7V
  • Input voltage, VIN: 7V
  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND

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  • Input voltage, VIN: 7V
  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C
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  • Absolute maximum ratings:
  • Supply voltage, VCC: 7V
  • Input voltage, VIN: 7V
  • Operating temperature range, 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C
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  • Absolute maximum ratings:
  • Supply Voltage VCC: 7V
  • Input Voltage VIN: 7V
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  • Absolute Maximum Ratings:
  • Supply voltage, VCC: 7V
  • DC input voltage, VIN:
    R inputs: 7V
    A and B inputs: 5.5V
  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND

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Product Summary

The NTE74LS290 is a monolithic counter in a 14-lead plastic DIP-type package that contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five. The NTE74LS290 has a gated zero reset and also contains gated set-to-nine inputs for use in BCD nine's complement applications. To use the maximum count length, the B input is connected to the QA output. The input count pulses are applied to input A and the outputs are as described in the appropriate function table. A symmetrical divide-by-ten count can be obtained by connecting the QD output to the A input and applying the input count to the B input which gives a divide-by-ten square wave at output QA.

Data Sheet

  • Absolute maximum ratings:
  • Supply voltage VCC: 7V
  • DC input voltage VIN:
    R inputs: 7V
    A and B inputs: 5.5V
  • Operating temperature range TA: 0°C to +70°C
  • Storage temperature range Tstg: −65°C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND
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