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NTE74390 - IC-TTL Dual Counter

Model:

NTE74390

 | Catalog #: 55051367
Price:
$2.85
$2.85
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  • Absolute Maximum Ratings:
  • Supply voltage VCC: 7V
  • DC input voltage VIN: 7V
  • Off−state output voltage: 7V
  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C
  • Voltage values are with respect to network ground terminal

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  • Absolute Maximum Ratings:
    Unless otherwise specified, all voltages are referenced to GND
  • Supply voltage, VCC: 7V
  • DC input voltage, VIN: 5.5V
  • Off−state output voltage: 7V
  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C

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  • Features:
  • Four J−K flip−flops in a single package
  • Common positive−edge−triggered clocks with hysteresis: 200mV
  • Fully buffered outputs
  • Clock input frequency: 45MHz
  • Absolute Maximum Ratings:
  • Supply voltage VCC: 7V
  • DC input voltage VIN: 5.5V
  • Operating temperature range TA: 0°C to +70°C
  • Storage temperature range Tstg: −65°C to +150°C
  • Voltage values are with respect to network ground terminal

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   Free Ground Shipping on orders over $25.  More details

Availability:

ONLINE In stock
Usually ships in 1 - 2 business days


Go to Product Detail Page
Product Summary

The NTE74390 is a monolithic dual 4-bit decade ripple counter in a 16-lead plastic DIP-type package that contains eight master-slave flip-flops and additional gating to implement two individual four-bit counters. This device incorporates dual divide-by-two and divide-by-five counters, which can be used to implement cycle lengths equal to any whole and/or cumulative multiples of 2 and/or 5 up to divide-by-100. When connected as a bi-quinary counter, the separate divide-by-two circuit can be used to provide symmetry (a square wave) at the final output stage. The NTE74390 has parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system-timing signals.

Features:

  1. Dual version of the popular NTE7490
  2. Individual clocks for A and B flip-flops provide dual ÷ 2 and ÷ 5 counters
  3. Direct clear for each 4-Bit counter
  4. Dual 4-Bit versions can significantly improve system densities by reducing counter package count by 50%
  5. Typical maximum count frequency: 35MHz
  6. Buffered outputs reduce possibility of collector commutation


  7. Data Sheet

    • Absolute Maximum Ratings:
      Unless otherwise specified, all voltages are referenced to GND
    • Supply voltage, VCC: 7V
    • Input voltage: 5.5V
    • Operating temperature range, TA: 0°C to +70°C
    • Storage temperature range, Tstg: −65°C to +150°C
    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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