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NTE74197 IC TTL Presettable Decade Counter/Latch

Model:

NTE74197

 | Catalog #: 55051339
Price:
$2.77
$2.77
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  • Fully programmable
  • Fully independent clear input
  • Input clamping diodes simplify system design
  • Output QA maintains full fan−out capability in addition to driving clock-2 input

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  • Synchronous parallel load
  • Positive edge−triggered clock
  • Parallel inputs and outputs from each flip−flop
  • Direct overriding clear
  • J and K inputs to first stage
  • Complementary outputs from last stage

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  • Single down/up count control line
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  • Features:
  • Directly compatible for use with: NTE74181, NTE74LS181
  • Absolute Maximum Ratings: (Note 1)
  • Supply voltage VCC: 7V
  • DC input voltage VIN: 5.5V
  • Interemitter voltage (Note 2): 5.5V
  • 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
  • DC input voltage: 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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Product Summary

The NTE74197 is a high−speed monolithic modulo−16 binary counter in a 14−lead plastic DIP-type package consisting of four DC coupled, master−slave flip−flops which are internally interconnected to provide a divide−by−two and a divide−by−eight counter. This device is fully programmable; that is, the outputs may be preset to any state by placing a low on the count/load input and entering the desired data at the data inputs. The outputs will change to agree with the data inputs independent of the state of the clocks. During the count operation, transfer of information to the outputs occurs on the negative−going edge of the clock pulse. The NTE74197 features a direct clear which when taken low sets all outputs low regardless of the state of the clocks. The NTE74197 may also be used as a 4−bit latch by using the count/load input as the strobe and entering data at the data inputs. The outputs will directly follow the data inputs when the count/load is low, but will remain unchanged when the count/load is high and the clock inputs are inactive. All inputs are diode−clamped to minimize transmission line effects and simplify design and are compatible with most TTL logic families.

  • Fully programmable
  • Fully independent clear input
  • Input clamping diodes simplify system design
  • Output QA maintains full fan−out capability in addition to driving clock-2 input
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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